What is often added to the water used when reacting the group 1 metals with
water?
Universal indicator
An acid
An alkali
Oil
What is produced when sodium reacts with water?
Sodium oxide and water

Answers

Answer 1

Answer:

an acid.

sodium oxide and water


Related Questions

How has cooperation played a role in life's major evolutionary transitions?

Answers

Answer:

The cooperation of a species is shown throughout history. Including in our history. Where it be physical evolution or technological. We have helped each other with building, advice, locations, Reproduction, etc.

Which one of the following is the symbol used in a chemical equation for a
gas?
A. (g)
B. (aq)
C. (gas)
D. (a)

Answers

Answer:

A. (g)

Explanation:

Since it asks for a gas, it is A.

Answer:

A (g)

Explanation:

Helium gas (He) is an element and not a compound. Why is this true?

Answers

If we fill up a balloon with just helium gas, it will only contain helium atoms.

What type of reaction is the equation 2NaCl → 2Na +Cl2?

Answers

Answer:

Synthesis reaction

Explanation:

This is a synthesis reaction. When you combine sodium metal (Na) with chlorine gas (Cl), you form sodium chloride or kosher salt (NaCl).

Hope this explanation helps!

40POINTS AND BRAINLIEST Discuss the orders in which electrons are filled in the s and d subshells of the first three elements in group11​

Answers

Step 1: add electrons to fill the 1s subshell (maximum of 2 electrons), when this is full, go to step 2. Step 2: add electrons to fill the 2s subshell (maximum of 2 electrons), when this is full, go to step 3. Step 3: add electrons to fill the 2p subshell (maximum of 6 electrons), when this is full, go to step 4. Step 4: add electrons to fill the 3s subshell (maximum of 2 electrons), when this is full, go to step 5. Step 5: add electrons to fill the 3p subshell (maximum of 6 electrons), when this is full, go to step 6. Step 6: add electrons to the 4s subshell (maximum of 2 electrons), when this is full, go to step 7. Step 7: add electrons to the 3d subshell (maximum of 10 electrons), when this is full, go to step 8. Step 8: add electrons to the 4p subshell (maximum of 6 electrons), when this is full, go to step 9. etc

So for Cu would be: 1s^22s^22p^63s^23p^63d^9

Ag would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^1

Au would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^25p^64f^145d^106s^1

The hottest place in California is Death Valley with a record temperature of 130 ⁰F. Calculate the temperature in ⁰C and K.

Answers

Answer:

54.(4)° C (the 4 in the parentheses means the 4 goes forever), 327.594°K

Explanation:

When you convert 130°F to °C, you will get 54.(4)°C, and the 4 in the parentheses goes forever, and 130°F to °K is 327.594°K, hope it helps!

Explain the term rate of a chemical reaction.

Answers

Answer:

The rate of a reaction is a measure of how quickly a reactant is used up, or a product is formed.

Explanation:

An unknown metal has a density of 10.51 g/ml and a mass of 287.8 g. What is the
unknown metal's volume?

Answers

Answer:

27.3834443387 so B

Explanation:

M/D=V

287.8/10.51=V

V=27.3834443387

Answer:

27.38

Explanation:

287.8 Divided by 10.51 = 27.38

Please mark brainliest if helped

A horse traveled a distance of 20 miles in 2
hours. What was the horse's speed?

Answers

The horses speed was 10 mph

Answer:

The horses speed was 10 miles per hour.

Explanation:

20/2=10

Hope this helps!

Calculate number of moles in 42g of silicon.

Answers

Answer:

[tex]\frac{3}{2}[/tex]

Explanation:

No of moles : [tex]\frac{given mass}{atomic mass}[/tex]

so the given mass is 42 gm and atomic mass of silicon is 24 when u solve it u get 3/2

a sample of alcohol has a density 0.82 g/ml.what is the mass of 5500 mL of the alcohol

Answers

Answer:

The answer is 4510 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

density = 0.82 g/mL

volume = 5500 mL

We have

mass = 0.82 × 5500

We have the final answer as

4510 g

Hope this helps you

Explain the term catalyst and how it affects the rate of a chemical reaction.

Answers

Answer:

Catalyst. A catalyst speeds up a chemical reaction, without being consumed by the reaction. It increases the reaction rate by lowering the activation energy for a reaction. Energy diagrams are useful to illustrate the effect of a catalyst on reaction rates.

Explanation:

Formula for all possible isomers of hexane​

Answers

Answer:

1) n-Hexane. 2) 2-Methyl pentane(IUPAC name) or Isohexane(common name). 3) 2,2-Dimethylbutane(IUPAC name) or Neohexane(common name). 4) 3-Methylpentane

Explanation:

Calculate the entropy change when 4.31 g of H2 reacts with O2 according to the reaction

2 H2(g) + O2(g) → 2 H2O(l)

at 298 K and 1 atm pressure. The standard molar enthalpy of formation of H2O(l) at 298 K is −285.8 kJ/mol. The corresponding free energy of formation is −237.2 kJ/mol.

Answer in units of J/K.

Answers

Answer:

Explanation:

ΔG  =  Δ H - T ΔS

Given , ΔG = -237.2 kJ / mol

Δ H = - 285.8 kJ / mol

T = 298

Putting the values in the equation

-237.2 = - 285.8 - 298 x ΔS

ΔS  = .163 kJ / mole K

moles of water formed = 4.31 / 2 = 2.155

entropy change required = 2.155 x .163 kJ / K

= 351.26 J / K .

NEED HELP FAST!!!!
Points A and B are locations on the banks of a river. What are the dominant processes occurring at locations A and B? *


A. deposition at location A; erosion at location B

B. erosion at location A; deposition at location B

C. deposition at both locations A and B

D. Erosion at both locations A and B

Answers

Answer:

C

Explanation:

Please help I’ll give brainiest!

Answers

Answer:

Im sorry if u get it worng but is it the 3rd one?

Explanation:

Which changes involve forming or breaking chemical bonds?

A.burning and digesting

B.boiling and melting

C.burning and melting

D.rusting and cutting

Answers

Answer:

d

Explanation:

i took the test

Which contribution is a modification to Thomson's plum pudding model?

Atoms are indivisible.
Electrons are scattered in an atom.
A positively charged nucleus sits at the center of an atom.
Atoms of the same element have the same properties.

Answers

Answer:

Option C: A positively charged nucleus sits at the center of an atom.

Explanation:

Thompson’s plum pudding model was a model proposed by Thompson to show that an atom consisted of more than one fundamental unit.

In Thompson's model, he suggested that the atom consisted of a cloud of positive charges which were surrounded by electrons which are negative charges distributed throughout.

Now, Thompson's experiment was later rejected by Ernest Rutherford when he carried out the gold foil experiment and came to the conclusion where he proposed a model that the atom consisted of mainly empty space and that all its positive charge are concentrated at its center and further surrounded by a cloud of electrons.

From the given options, the correct one is Option C.

Answer: Option C: A positively charged nucleus sits at the center of an atom.

Explanation:

During a change in state, energy is transferred in the form of
heat

light

moisture

motion

Answers

Answer:

heat I think.....

Hope it will help you......

During a change in state, energy is transferred in the form of heat.

Hence, Option (A) is correct.

What is States of matter ?

When energy is added or removed to matter in the form of heat, it changes state to form a state of matter.

A state of matter is defined as one of the ways in which matter can interact with itself to form a homogeneous phase.

Therefore , During a change in state, energy is transferred in the form

of heat. Hence, Option (A) is correct.

Learn more about States of matter here ;

https://brainly.com/question/9402776

#SPJ2

Where in equation for photosynthesis does carbon dioxide belong

Answers

Answer:

The equation for photosynthesis is 6 CO2 + 6 H2O + light --> C6H12O6 + 6 O2, so carbon dioxide will be found in the reactant part of the equation.

Which noble gases is closest to magnesium? On the periodic table? What must happen if a magnesium atom for it to have an electron arrangement similar to that of a noble gas?

Answers

Answer:

Neon and loose electrons

Explanation:

Magnesium has an electron configuration of 2e 8e 2e, and Neon is 2e,8e. For Mg to have a similar electron arrangement it must loose its two valence electrons and make it an ion.

Answer:

Noble neon gas is the closest.

Explanation:

noble Neon  gas

The Magnesium would have to lose two electrons

how many molecules are in CO²​

Answers

Answer:

53.11× 10²³ molecules

Explanation:

Given data:

Number of molecules of CO₂ = ?

Mass of CO₂ = 388.1 g

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of CO₂ = 12× 1 + 16×2

Molar mass of CO₂ = 44 g/mol

Now we will put the values in formula.

Number of moles = 388.1 g/ 44 g/mol

Number of moles = 8.82 moles

Now we will calculate the number of molecules by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

8.82 mol × 6.022 × 10²³ molecules / 1 mol

53.11× 10²³ molecules

Brainliest plz?

Answer:

Now times by Abogadros constant: 1* 6.022*10^23=6.022*10^23 molecules of CO2 are present.

Explanation:

We know the molar mass of CO2(g) is 44.01⋅g⋅mol−1 . And so Avogadro's number of carbon dioxide molecules have this mass... And we take the product of the quotient... Molecules of carbon dioxide=5.00⋅mol×6.022×1023⋅mol−1≅30×1023⋅carbon dioxide molecules.

5. What is a hypothesis and how is it used?

Answers

Answer: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

A hypothesis is used in an experiment to define the relationship between two variables. The purpose of a hypothesis is to find the answer to a question. A formalized hypothesis will force us to think about what results we should look for in an experiment. The first variable is called the independent variable

i hopes this helps :)

Which option is a mixture? a.carbon dioxide b. air c. oxygen d. carbon

Answers

The answer would be A.) carbon dioxide

Answer:

Air

Explanation:

Did test 100

in a hydraulic lift system, the output force is greater than the input force because

Answers

Answer:

In a hydraulic lift system, the output force is greater than the input force because the pressure acting on the output piston is greater than the pressure acting on the input piston.

Explanation:

You come across a mysterious substance that has a mass of 1.8225 x 10 to the power of 2g
and a volume of 0.025 L (1L = 1000 mL). Using the density formula what is the density

Answers

Answer:

192

Explanation:

Bc its 182

The unknown element (Johnsonium, Jo) contains three naturally occurring isotopes. The relative abundances and atomic mass are:
Moorium-36: abundance = 1.32%, mass = 35.978amu
Moorium-38: abundance = 3.25%, mass = 37.963amu
Moorium-40: abundance = 95.43%, mass = 39.962amu
What is the average atomic mass of "Moorium?"

Answers

Answer:

Average atomic mass of moorium is 39.844 amu.

Explanation:

Given data:

Atomic mass of moorium-36 = 35.978 amu

Relative abundance of  moorium-36 = 1.32%

Atomic mass of moorium-38 = 37.963 amu

Relative abundance of  moorium-38 = 3.25%

Atomic mass of moorium-40 = 39.962 amu

Relative abundance of  moorium-38 = 95.43%

Solution:

Average atomic mass moorium = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)+ (abundance of 3rd isotope × its atomic mass)  / 100

Average atomic mass of moorium = (1.32×35.978)+(3.25×37.963)+(95.43×39.962) /100

Average atomic mass of moorium =  47.491 + 123.380 +3813.574  / 100

Average atomic mass of moorium = 3984.445 / 100

Average atomic mass of moorium = 39.844 amu

Which is a dominant trait that Mendel observed in pea plant

A. Bumpy pods

B. Short height

C. Yellow seeds

D. White flowers

it is not A

Answers

Answer:

C, yellow seeds

Explanation:

In Mandel's studies, he proved that yellow seeds were to be dominant and green seeds were to be recessive.

Answer:

c. yellow seeds

Explanation:

i toke the test

What happens to particles in a sample of liquid when the liquid is heated and cooled?

Answers

If a liquid is heated it’s particles are given more energy and will move faster, however if it is cooled, it’s particles slow down and come closer together.

Rain is falling at 2.00 inches per hour. How many inches have fallen in 6000.0 seconds?

Answers

It is 2 because 60/30=2
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