What do these red/yellow/orange-precipitate reactions have in common? (choose
the best answer)

They all made the same color.

They all have a barium (Ba+2) cation.

They all have a chromate (CrO4-2) ion.


They all have a chloride ( C1-1) ion.

Answers

Answer 1

Answer:

3 is the correct I think so

Answer 2

Answer:

They all have a chromate (CrO4-2) ion.

Explanation:


Related Questions

Which of the following is the correct way to do it for 3753 Scientific notation

Answers

Answer:

b

Explanation:

it is b because it has 4 spots and that would be 3 zeros so it is to the 3rd power

A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. Find(a) the mass percent of solute and (b) the mass percent of solvent. ​

Answers

Answer:

[(15g NaCl/(70+15)]*100 = % NaCl

{(70g H2O/(70+15)]*100 = % H2O

Explanation:

A solution is prepared by dissolving 15.0 g of table salt in 70.0g of water. (a) The mass percent of solute is 17.64 % and (b) The mass percent of solvent is 82.35 %.

How to calculate the Mass percent of solute ?

Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex]  × 100

How to calculate the Mass percent of solvent ?

Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

Here,

Mass of solute (table salt) = 15.0 g

Mass of solvent (water) = 70.0 g

(a) The mass percent of solute

Put the value in above formula we get

Mass percentage = [tex]\frac{\text{Mass of solute}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

                             = [tex]\frac{15}{15 + 70}[/tex] × 100

                             = [tex]\frac{15}{85}[/tex]  × 100

                             = 17.64 %

(b) The mass percent of solvent

Mass percentage = [tex]\frac{\text{Mass of solvent}}{\text{Mass of solute + Mass of solvent}}[/tex] × 100

                             = [tex]\frac{70}{15 + 70} \times 100[/tex]

                             = [tex]\frac{70}{85} \times 100[/tex]

                             = 82.35 %

Thus, we can say that (a) The mass percent of solute is 17.64 % and (b)  The mass percent of solvent is 82.35 %.

     

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Please help ASAP!
How does an animal use sugar as a source of energy?

Answers

Plants and animals use glucose as a soluble, easily distributed form of chemical energy which can be 'burnt' in the cytoplasm and mitochondria to release carbon dioxide, water and energy. Pure monosaccharides, such as glucose, attract water.

An animal's body breaks down carbohydrates and converts them into simple sugar such as glucose. Glucose in the form of energy is carried through the blood and delivered to every cell of the body.

What is the function of sugar in animals?

Carbohydrates are an important compound of all life on this planet. Both plants and animals utilize carbohydrates as a source of energy to keep their body functioning at the most basic level.

Carbohydrates fulfill needs by helping in the synthesizing of other chemicals and giving structure to cells within the body. Carbohydrates are carrying out normal functions such as growth, movement, and metabolism.

Carbohydrates store energy in the form of starch and provide either simple or complex sugars. Polysaccharides, give a steady supply of energy while sugars, monosaccharides, and disaccharides, supply quick energy on dissolving.

Carbohydrates have the side effect of helping with the processing of other body's chemicals. As carbohydrates break down, they release energy.

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What is the atomic mass, in amu, of this atom?

Answers

Answer:precisely 1/12 the mass of an atom of carbon-12.

Explanation:The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass.

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Liquid water can be separated into hydrogen gas and oxygen gas through electrolysis. 1 mole of hydrogen gas and 0.5 moles of oxygen gas is produced from 1 mole of liquid water collected in separate 10 L containers at 1 atm. Will the temperatures of the gases be equal? In one to two sentences, use the ideal gas law to explain your answer. (20 points)

Answers

Answer:

The ideal gas law specifies the mechanical behavior of ideal gases. It is capable of calculating the volume of gases produced or consumed.

In chemical equations, these equations are widely used to convert between volumes and molar quantities.

Use ideal gas law

Therefore

is the same for both So, = same for both.

When n increases, T decreases, so, n is 1 for and 0.5 for , implying that is hotter.

The temperatures of the gases will not be equal.

The ideal gas law specifies the mechanical behavior of ideal gases. It is capable of calculating the volume of gases produced or consumed. In chemical equations, this equation is widely used to convert between volumes and molar quantities. The ideal gas law states that the pressure, temperature, and volume of gas are related to each other

[tex]PV=nRT[/tex]

∵V is the same for both

∴T= same for both.

When n increases, T decreases, so, n is 1 for hydrogen gas and 0.5 for  oxygen gas ,implying that oxygen gas will have more temperature than hydrogen gas since its number of moles are lower than hydrogen gas.

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Which procedures were followed in this lab to decrease experimental error? Check all that apply.
using only two types of seeds, both from the same source
having one student count every sprout in every quadrat
using adjacent plots of land for both groups
increasing the sample size by combining data from multiple groups
repeating the experiment indoors under growth lights
measuring plant height the same way and at the same time for both groups

Answers

Answer:

Basically A, C, D, F

Explanation:

Summarizing the answer

Using only two types of seeds, both from the same source.

What are experimental error?

Experimental error refers to the uncertainties or mistakes that can occur during scientific experiments, leading to inaccuracies in the results. These errors can arise due to a variety of reasons, such as human error, instrumental error, environmental factors, and methodological issues. The presence of experimental error can make it difficult to draw accurate conclusions from the data obtained during an experiment.

Scientists use various procedures to reduce experimental error and improve the accuracy and reliability of their results. These procedures can include:

using adjacent plots of land for both groupsincreasing the sample size by combining data from multiple groupsmeasuring plant height the same way and at the same time for both groups.

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which aqueous solution has the lowest vapor pressure?

Answers

Answer:

Since all of them are aqueous solutions, the solvent in each solution is H2O. Based on the Raoult's Law, we only have to determine which solution contains the highest mole fraction of the solvent, H2O. The solution that will have the lowest vapor pressure is a. 0.20 m Na2SO4.

Explanation:

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How many moles of AgNO3 must react to form 0. 854 mol Ag? mol AgNO3.

Answers

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

The balanced chemical equation for the dissolution of silver nitrate has been:

[tex]\rm AgNO_3\;\rightarrow\;Ag^+\;+\;NO_3^-[/tex]

The aqueous solution of silver nitrate has been dissociated into the constituent silver and nitrate ions.

In a balanced chemical equation, the coefficient has been equivalent to the moles of each reactant forming the moles of product.

From, the balanced equation,

[tex]\rm 1\;mol\;AgNO_3=1\;mol\;Ag[/tex]

The given moles of Silver has been 0.854 mol. Thus, the moles of silver nitrate required has been given as:

[tex]\rm 1\;mol\;Ag^+=1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;\times\;1\;mol\;AgNO_3\\0.854\;mol\;Ag^+=0.854\;mol\;AgNO_3[/tex]

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.

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I need help, plz help me with this problem

Answers

Answer:

It's b

Explanation:

I had the same exact question


Does this aid in joining the two molecules?

Answers

Answer:

yes it does aid in joining the two molecules

Explanation:

Please answer any of these
I’ll be grateful and I’m marking brainliest

Answers

I can’t do it sorry

Which materials are used to make concrete select all that apply

Answers

Answer:

cement air water sand and gravel

Explanation:

Answer:

Explanation:

The principal ingredients that make up the concrete mix are: cement, fine aggregate, coarse aggregate, water, chemical admixtures, and mineral admixtures.

Whats the best red waterproof lipstick? Need some help :)

Answers

[tex][tex]\blue{\rule{40pt}{900000000pt}}[/tex][/tex]

Analyze the reaction of solid magnesium and water. Which pair of reactants and products in the table below represent the correct balanced equation for the reaction?

Answers

Answer:

monkey

Explanation:

cause that's what u r

balanced chemical equations a) Sodium + Oxygen
b) Potassium + Chlorine
c) Hydrogen + Chlorine
d) Nitrogen + Hydrogen
e) Calcium + Nitrogen
f) Calcium carbonate
8) Zinc + Hydrochloric acid Zinc chloride + Hydrogen h) Ammonia + Nitrogen - Calcium nitride Carbon dioxide + Calcium oxide Ammonium nitride​

Answers

Answer:

a) sodium oxide

b) potassium peroxide

c) Hydrogen chloride

d) form ammonia

e) Calcium nitride

Which of the following methods will usually cause a reaction to speed up?



Group of answer choices

Removing the catalyst.

Combining the reactants at a lower temperature.

Grinding one of the reactants into a powder.

Reducing the concentration of reactants.

Answers

reducing the concentration of reactants

the method that will usually cause a reaction to speed up from the list given is: Reducing the concentration of reactants.

Meaning of Reaction

Reaction can be defined as the combination of substances or a process where substances acts on each other, where substances changes into different substances.

A reaction can be said to be the event that causes a restructuring or rearrangement of atoms of a substance when it is in contact with another substance.

In conclusion, the method that will usually cause a reaction to speed up from the list given is Reducing the concentration of reactants.

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how do i find the name of an element

Answers

Answer:

The periodic table will say it underneath the symbol.

Explanation:

I don't know how else to describe it but I hope this helps. :)

In the periodic table of elements it will say


So 28 (NI) is nickle bc thats what is says on the bottom left

1) Which of the following is true about Earth’s plates?

a. Earth’s plates are separated by oceans.
b. Earth’s plates are piled on top of one another within the Earth.
c. Earth’s plates fit closely together with the edges of the plates touching each other.
d. Earth’s plates are surrounded by melted rock and do not touch each other.

Answers

Answer:

a because the others whould cause earthquakes

Explanation:

Answer:

A

Explanation:

because i think is A (if is not im sorry )

What is the number of atoms of oxygen in 0.1 mol of CuSO4.5H2O? & explain​

Answers

0ne mole of CuSO4.5H2O contains 6.023×10^23 no.of molecules

Again, 1 mole CuSO4.5H2O contains 9 oxygen atoms

Therefore,1 mole CuSO4.5H2O contains 9 × 6.023×10^23 no.of oxygen atoms

Hope this help!

A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small percentage of the mass required to keep it from
flying apart. Why does the duster remain intact?

Answers

Answer:

it is because of Dark Matter

Dark Matter, component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 30.1 percent of the matter-energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent).

Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be seen directly.

Explanation:

Hope It helps

Have A Nice Day : )

A group of scientists is studying observable matter in a cluster of galaxies. The duster remains intact due to the gravitational pull.

What is a galaxy?

A galaxy is a collection of stars, stellar remains, interstellar gas, dust, and dark matter that are gravitationally bonded together.

Dark matter is a component of the universe whose gravitational pull can be detected rather than its luminosity. The universe's matter-energy ratio is made up of 30.1 percent dark matter, 69.4 percent dark energy, and “regular” visible matter (0.5 percent).

Since dark matter is made up of particles that do not absorb, reflect, or emit light, it is impossible to identify it through electromagnetic radiation observation. Dark matter is a substance that cannot be directly observed.

Therefore, a team of researchers is examining the material that can be seen in a clump of galaxies. Due to the gravitational force, the duster is unharmed.

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Si echamos en un vaso agua y sal el ¿huevo flotaria ? por que

Answers

($6463$6$$5$5$6!6$6!5!
No porque la sal no flota y el huevo no flota

Which statement best describes mechanical energy?

the energy of electricity and motion

the energy of heat and magnetism

the energy of electricity and heat

the energy of moving parts and motion

Answers

Answer:

The energy of moving parts and motion

Explanation:

Mechanical energy doesn't have change in temperature or heat, so electricity and heat would be cancelled out. Mechanical energy is more about motion.

PLS ANSWER ALL QUESTIONS FOR 67 POINTS
Atomic Structure
1. All atoms are made up of small particles called ____________________.
2. These small particles include the positively charged ________________, the negatively charged _____________ and the neutral ____________.
3. The atomic mass equals the ______________ and the ______________.
4. The atomic number tells you the number of ________________ which is equal to the number of _________ in a stable atom.
5. So, we can use the atomic mass and the atomic number to calculate the total number of just the neutrons. Calculate the number of neutrons in a Carbon atom.
[Picture of carbon]

Total number of neutrons = ________________

6. The lightest sub-atomic particle is the _____________
7. The center of the atom is called the __________
8. The area where the negatively charged particles can be found is called the _________________
9. Each of the charged particles are on what we call ____________ or ______________
a. There are how many on the 1st layer _________
b. On the 2nd layer _________
c. On the 3rd layer _________
d. Electrons on the outer level of any atom have a special name which is _____________________ and these outer electrons determine the atoms reactivity with other elements

Answers

Explanation:

1. subatomic particles. 

2.proton, electron and neutron

3.The atomic mass of an element is actually the sum of the MASSES of protons and neutrons in AN atom of that element

4.An element's atomic number is equal to the number of protons in the nuclei of any of its atoms

5. Number of Protons = Atomic Number

Number of Electrons = Number of Protons = Atomic Number

Number of Neutrons = Mass Number - Atomic Number

For krypton:

Number of Protons = Atomic Number = 36

Number of Electrons = Number of Protons = Atomic Number = 36

Number of Neutrons = Mass Number - Atomic Number = 84 - 36 = 48

6. electron, lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg

7.The center of the atom is called a nucleus

8. Negatively charged particles are found in multiple layers outside the nucleus of the atom. These particles are called electrons, and they orbit in various energy levels around the atom's nucleus.

9. A charged particle is also called an ion

will give brainlist to a person with correct answers for all (please help me)
1. Explain how is LiCl formed?
2. What is a combination/synthesis reaction
3. What is a decomposition reaction?
4. What is a single-replacement reaction?
5. What is a double-replacement reaction?
6. What are the trends in electronegativity within groups and across periods in the periodic table?
7. Which element has the lowest electronegativity value?
8. How does electronegativity determine the type of bond that atoms will form?
9. What type of bond will form between 2 atoms that have a large difference in electronegativity?
10. What type of bond will form between 2 atoms when the difference in electronegativity is 0.5?
11. Which element has the highest electronegativity value?
12. What does it mean that matter cannot be created nor destroyed in a Chemical reaction?

Answers

Answer:

1. LiCi is formed by the treatment of lithium carbonate with hydrochloric acid

2. A combination reaction (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product).  

3. Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments.

4. A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound

5. Double replacement reactions have two ionic compounds that are exchanging anions or cations.

6. The most electronegative elements are found on the top right of the periodic table.

7. cesium

8. Electronegativity describes the degree to which an atom attracts electrons in a chemical bond. But the electronegativity of two atoms would determine their bond type.

9. ionic bond

10. polar covalent bond

11. fluorine

12. Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change.

Hope i was able to help!!!

What is the mass of 1.25 x [tex]10^{24}[/tex] atoms of nitrogen?

Answers

Answer:

i dont know

Explanation:

trolololololololololololololololol

elements of the fourth period fill the 4s sublevel with electrons before filling the 3d sublevel. Also, some elements move an electron from a filled 4s sublevel to an unoccupied 3d sublevel. Explain these behaviors

Answers

Answer:

Elements fill the lowest energy subshells first(Aufbau's rule), and the 4s subshell is lower energy than the 3d, making the labeling deceiving. In some rare situations, the electrons would rather have Hund's rule be respected more, having all electrons facing one way with no doubled up because it is more stable(these are pretty rare and usually deal with transition metals like copper).

Hope this helps!

Explanation:

As it has less energy than the 3d orbital, the 4s orbital fills next. Following the filling of the electrons, 4s has more energy than 3d. Therefore, the two electrons in the 4s are at a higher energy than they could be in the 3d since it has a vacancy. As a result, electrons transition from a higher to a lower energy orbital.

What are electrons ?

The elementary electric charge of the electron is a negative one, making it a subatomic particle. Due to their lack of components or substructure, electrons, which are part of the lepton particle family's first generation, are typically regarded to be elementary particles.

Since 4s electrons are bound by the nucleus farther away and more loosely than 3d electrons, 4s electrons are eliminated first rather than 3d electrons.

The 4s orbital should always be filled before the 3d orbitals, according to the Aufbau principle, although this isn't the case for the majority of elements. After Sc, electrons actually enter the 3d orbitals first because they have a lower energy than the 4s orbital.

Thus, electrons transition from a higher to a lower energy orbital.

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Which element has a greater Ist ionization energy, Phosphorus or Fluorine?

Answers

Answer:

phosphorus

Explanation:

i believe it’s fluorine (?)

What equation explains the relation between amperes, watts and volts?
I = W-V
I = W+V
I = W/V
I = W*V

Answers

Answer:

I = W/V

Explanation:

Comes from the Equation P=I*V where P is Power measured in Watts, I is Current measured in Amps and V is Voltage measured in Volts.

PLEASE HELP WILL AMRK BRAINLIEST
what is the atomic mass of Na3PO4?

Answers

Answer:

163.94

Explanation:

Na = 22.99 (3)

P = 30.97

O = 16.00 (4)

22.99(3) + 30.97 +16.00(4) = 163.94

Hope that helps

163.94 g/mol
I think.. sorry if I’m wrong! Have a nice day :)

What makes solids, liquids, and gases different. Explain the hypothesis, prediction and experiments that can lead to scientific theory.

Answers

Answer: Gases, Liquids, and Solids

Gases

Explanation:

Behavior

gas liquid solid

assumes the shape and volume of its container

particles can move past one another assumes the shape of the part of the container which it occupies

particles can move/slide past one another retains a fixed volume and shape

rigid - particles locked into place

compressible

lots of free space between particles not easily compressible

little free space between particles not easily compressible

little free space between particles

flows easily

particles can move past one another flows easily

particles can move/slide past one another does not flow easily

rigid - particles cannot move/slide past one another

a hypothesis is a prediction based on a theory. If the Hypothesis comes true the theory is more accepted.

A scientific theory differs from a scientific fact or scientific law in that a theory explains "why" or "how": a fact is a simple, basic observation, whereas a law is a statement (often a mathematical equation) about a relationship between facts.

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Find the perimeter of the rectangle whose: length = 1m, breadth = 75cmPls all answer fast PLS A student has a savings account with $475 in it.She deposits $125 of her paycheck into the accountevery week. Her goal is to save $7,000 for college.How long will it be before she has $1350? BRAINLYread this passage then answer the questions.Bul-GO!-giCan you chop the scallions?Seo-Jun didn't look away from his smartphone to reply to his mothers request. He was busy texting Vince Cordova about a new show they were planning to binge watch Friday night.Seo. . . . Seo!What?What do you mean, 'What? I need you to chop the scallions. It was 11:30 a.m., and the Town Pavilionthe office building Ji-Suk's food truck Bul-GO!-gi was parked outside ofwas about to unleash a stampede of customers. 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Even though she'd made Ji-Suk take Korean lessons every Saturday morning followed by violin lessons in the afternoonand cooked kimchi and other Korean delicacies with her at least once a weekJi-Suk's mother had wanted her to succeed by American standards. And she had. She'd become a lawyer, just like her mother wanted, but she'd also learned to love burnt end barbecue, a local culinary favorite. She was an avid fan of the Kansas City Chiefs. She even loved playing softball; she had a wickedly fast windmill pitch, having played throughout college and graduate school and on the law firm's recreational team. Ji-Suk had succeeded by American standards in ways her mother couldn't have imagined, and in ways her mother probably didn't want, but Ji-Suk couldn't do anything about that. She was American, just as much as she was Korean, and even though her mother wouldn't have wanted her to do it, starting the food truck was Ji-Suk's way of honoring her mother and showing that she valued what her mother had taught her.Still, she was determined not to force Seo-Jun to do the things her mother had forced her to do. He wouldn't have to take violin lessons, nor would he have to learn Korean. She was more than willing to let him take Korean lessons if he showed any interest, but he never did.She wasn't sure, however, whether she was doing the right thing, as Seo-Jun didn't seem to want to play sports, nor did he have any serious hobbies. He got by in school, but he didnt apply himself. He was mostly interested in his friends. 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