What Is the answers?

What Is The Answers?

Answers

Answer 1

Answer:

oxygen is responsible for rusting

Answer 2
Oxygen causes the metal can to rust

Related Questions

According to Hebrews 11, what did Abraham believe God would do if Isaac was slain as a sacrifice?

Answers

Answer:

He thought he was going to bring Isaac back from the dead. They ended up sacrificing the donkey instead.

which is the compound that has the higher boiling point and explain why we see the

differences we do

a. ethane vs. ethene

b. heptyne vs. pentyne

c. octane vs. octanal

thanks!

Answers

Answer:

b I think it is the correct answer

2.
The highest part of the wave is called the ____________.
Group of answer choices

A. best

B. crest

C. top

D. trough

Answers

Answer:

B. crest

Explanation:

The highest part of a wavelength is called the crest, meanwhile, the lowest part is the trough.

Answer:

b

Explanation:

it's highest because it have the most higher wave

As part of an investigation into the strength of electrostatic forces between molecules of water, a student will measure the melting point temperature. Which part of the experimental design does this describe?(1 point)
determining the procedure
determining what data to collect
deciding on the appropriate equipment
deciding on the number of trials to perform


Which experimental design would be best to use in investigating the boiling points of water and ethanol?

Heat samples of water and ethanol in two separate beakers using a Bunsen burner. Measure the temperatures at which the samples boil using a thermometer. Record these temperatures as the boiling points.
Mix samples of water and ethanol in a beaker, then heat using a Bunsen burner. Measure the temperature at which the sample boils using a thermometer. Record this temperature as the boiling point.
Heat samples of water and ethanol in two separate beakers using a Bunsen burner. Measure the temperatures at which the samples boil using a thermometer. Conduct several trials and record the average temperatures as the boiling points.
Mix samples of water and ethanol in a beaker, then heat using a Bunsen burner. Measure the temperature at which the sample boils using a thermometer. Conduct several trials and record the average temperature as the boiling point.

Which change happens when a substance melts?(1 point)
The vibration of the molecules produces enough heat to weaken the forces of attraction between the molecules of the substance.
Heat energy overcomes the forces of attraction between the molecules of the substance, so the molecules can move more freely.
Heat energy forces the molecules of the substance farther apart until the rigid structure of the solid breaks.
The molecules of the substance move farther apart, which pulls on the intermolecular bonds between them.
Which change occurs to cause water to boil into steam?(1 point)

The addition of kinetic energy causes the motion of water molecules to overcome gravitational forces.
The addition of kinetic energy causes the motion of water molecules to overcome gravitational forces.
The removal of kinetic energy causes the motion of water molecules to overcome electrostatic forces.
The removal of thermal energy causes the motion of water molecules to overcome gravitational forces.

Answers

Answer:

1) B. determining what data to collect

2) C. Heat samples of water and ethanol in two separate beakers using a Bunsen burner. Measure the temperatures at which the samples boil using a thermometer. Conduct several trials and record the average temperatures as the boiling points.

3) B. Heat energy overcomes the forces of attraction between the molecules of the substance, so the molecules can move more freely.

4). The addition of thermal energy causes the motion of water molecules to overcome electrostatic forces.

Explanation:

I think these are the answers, i'll confirm when I finish the test.

In an experiment it is known what quantity has to measured, thus the measurement of melting point has been determining what data to collect. Thus, Option B is correct.

To investigate the boiling point of water and ethanol, the samples has to boiled at constant parameters and the data has been collected with several trials. Thus, option C is correct.

Melting has been described as the change of the solid to the liquid state. With melting, there has been heat energy higher than the force of attraction allowing the molecules to move freely. Thus, option B is correct.

The boiling has been the change in the water at liquid state to the gaseous state. With boiling there is thermal energy capable of increasing the motion of water molecules overcoming electrostatic force.

For more information about melting, refer to the link:

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Which statement describes a homogeneous catalyst?
It is in a gaseous phase only.
It is in the same phase as the reactants.
It is completely consumed by reactants.
It forms different products than the uncatalyzed reaction forms.

Answers

Answer:

it is in the same phase as the reactants

The  statement describes a homogeneous catalyst is,

It is in the same as the reactants.

So, option B is correct one.

What is  homogeneous catalyst?The  homogeneous catalyst is refer to catalytic system.In this, the phase of substrates for a reaction and catalytic components are same.Mainly it is in liquid phase.Example: Production of acetic acid

What is catalyst?

The substance which increases the rate of the reaction without being itself change at the end of the reaction is called catalyst.

learn about homogeneous catalyst,

https://brainly.com/question/4249142

#SPJ2

. What mass of ammonium chloride must be added to 250. mL of water to give a solution with pH
4.85? [Kb(NH3) = 1.8 x 10-1
a. 4.7 g
b. 75 g
c.2.3 x 10-ºg
d. 19 g
e.10g

Answers

The mass of ammonium chloride that must be added is : ( A ) 4.7 g

Given data :

Volume of water ( V )  = 250 mL = 0.25 L

pH of solution = 4.85

Kb = 1.8 * 10⁻⁵

Kw = 10⁻¹⁴

Given that the dissolution of NH₄Cl gives NH₄⁺⁺ and Cl⁻ ions the equation is written as :

NH₄CI  +  H₂O  ⇄  NH₃ + H₃O⁺

where conc of H₃O⁺

[ H₃O⁺ ] = [tex]\sqrt{Ka.C}[/tex]   and Ka = Kw / Kb

∴ Ka = 5.56 * 10⁻¹⁰

Next step : Determine the concentration of H₃O⁺  in the solution

pH = - log [ H₃O⁺ ] = 4.85

∴ [ H₃O⁺ ] in the solution = 1.14125 * 10⁻⁵

Next step : Determine the concentration of NH₄CI in the solution

C = [ H₃O⁺ ]² / Ka

  = ( 1.14125 * 10⁻⁵ )² /  5.56 * 10⁻¹⁰

  = 0.359 mol / L

Determine the number of moles of NH₄CI in the solution

n = C . V

  = 0.359 mol / L  * 0.25 L =  0.08979 mole

Final step : determine the mass of ammonium chloride that must be added to 250 mL

mass = n * molar mass

         = 0.08979 * 53.5 g/mol

         = 4.80 g  ≈ 4.7 grams

Therefore we can conclude that the mass of ammonium chloride that must be added is 4.7 g

Learn more about ammonium chloride : https://brainly.com/question/13050932

Van der Waals bonds initiate
a) Between non-metals
b) Within ionic binds
c) Between metals
d) With H-bond
e) All of the above​

Answers

I think e no

I am giving you hint

A 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, what is the volume? *
0.4 L
0.8 L
0.2 L
1 L

Answers

The new volume when pressure increases to 2,030 kPa is 0.8L

BOYLE'S LAW:

The new volume of a gas can be calculated using Boyle's law equation:

P1V1 = P2V2

Where;

P1 = initial pressure (kPa)P2 = final pressure (kPa)V1 = initial volume (L)V2 = final volume (L)

According to this question, a 4.0 L balloon has a pressure of 406 kPa. When the pressure increases to 2,030 kPa, the volume is calculated as:

406 × 4 = 2030 × V2

1624 = 2030V2

V2 = 1624 ÷ 2030

V2 = 0.8L

Therefore, the new volume when pressure increases to 2,030 kPa is 0.8L.

Learn more about Boyle's law calculations at: https://brainly.com/question/1437490?referrer=searchResults

What does Bromine-80 decays by beta decay to?



Answers

Answer:

beta to Kr-80 or Se-80

Explanation:

sorry if wrong

The results of Rutherford's gold foil experiment gave him the evidence to conclude that the center of an atom was A) called the nucleus. B) neutral and relatively small. C) positively charged and relatively small. D) a densely packed area containing both positive and negative particles.

Answers

Answer:

c)

Explanation:

because alpha particles can go through it

A student was asked to determine the concentration of ammonia, a volatile substance used in the clinical setting as a respiretory stimulant to prevent fainting. First the student pipetted 25.00 mL of the cloudy ammonia solution into a 250.0 mL conical flask. 50.00 mL of 0.100 mol L' HCl(aq) was immediately added to the conical flask which reacted with the ammonia in solution. The excess (unreacted) HCI was then titrated with 0.050 mol L- Na2CO3(aq). 21.50 mL of Na2CO3(aq) was required. Calculate the concentration of the ammonia in the cloudy ammonia solution.​

Answers

This question is describing two chemical equations whereby the concentration of ammonia has to be determined. The first reaction is between 25.00 mL of ammonia and 50.00 mL of 0.100-M HCl whose excess was neutralized with 21.50 mL of 0.050-M Na₂CO₃ and thus, the concentration ammonia in the cloudy solution was determined as 0.114 M.

First of all we need to go over the titration of the excess HCl with Na₂CO₃ by writing the chemical equation it takes place when they react:

[tex]2HCl+Na_2CO_3\rightarrow 2NaCl+CO_2+H_2O[/tex]

Whereas the mole ratio of HCl to Na₂CO₃ is 2:1 and the volume of the HCl leftover is determined as follows:

[tex]V_{HCl}^{leftover}=\frac{2*0.050M*21.50mL}{0.100M} =21.5mL[/tex]

Next, we infer that the consumed volume of HCl by the ammonia solution was:

[tex]V_{HCl}^{consumed}=50.00mL-21.50mL=28.5 mL[/tex]

Then, we write the chemical equation that takes place between ammonia and HCl:

[tex]HCl+NH_3\rightarrow NH_4Cl[/tex]

Whereas the mole ratio is now 1:1, which means that the concentration of ammonia was:

[tex]M_{NH_3}=\frac{28.5mL*0.100M}{25.00mL}\\\\ M_{NH_3}=0.114M[/tex]

Learn more:

(Titration) https://brainly.com/question/15687419(Titration) https://brainly.com/question/25328286

Draw the Lewis Structure for C2F4. b. Total RED's c. Nonbonding RED's d. Electron-Pair Geometry e. Molecular Shape f. Is it Polar, Nonpolar or Ionic

Answers

The molecule C2F4 has a trigonal planar molecular and electron pair geometry.

The shape of a molecule is dependent on the number of electron pairs that surround the central atom in the molecule. In the molecule C2F4, there are two central carbon atoms.

Each of the central carbon atoms have a trigonal planar molecular and electron pair geometry. C2F4 is a symmetrical molecule so it is nonpolar and has a zero dipole moment.

Learn more: https://brainly.com/question/7558603

Which of the following describes a heterotroph?

Heterotrophs get their energy directly from the sun.
Heterotrophs conduct photosynthesis.
Heterotrophs can create their own food.
Heterotrophs cannot create their own food.

Answers

heterotrophs cannot create their own food and rely on others for food

heterotrophs cannot create their own food.

heterotrophs are like animals and humans so humans can’t make their own food.

Equation for the incomplete combustion of methanol

Answers

Answer:

The basis for incomplete combustion is that instead of carbon dioxide being produced alongside water, carbon monoxide and carbon is produced instead, the carbon being released as soot. That handily sets the products up for the equation.

And combustion is simply a reaction between a fuel, in this case, methanol and oxygen.

The chemical formula for methanol is CH3OH. Simply write the reactants and products as a chemical equation and balance it, and you have the equation.

Explanation:

please explain me answer a b c d

Answers

Answer:

I don't know the answers of chemistry if you have an entrance question of maths so I can

[tex]\rule{2000pt}{1000000pt}[/tex]

I have a hard time telling the difference between convection, conduction, and radiation, anybody got any tips?

Answers

Conduction
In conduction, heat transfer takes place between objects by direct contact.

Convection

In convection, the heat transfer takes within the fluid.

Radiation

In radiation, heat transfer occurs through electromagnetic waves without involving particles.

Safety considerations
• Sodium Hydroxide (please insert one statement of caution from MSDS)

Answers

Answer:

d took the test

Explanation:

help plzzzzzzzzzzzzzzzzz​

Answers

Answer:

C

I hope that this helps.

Hello do anyone on here no something about Gizmos Fan Cart Physics?

Answers

Answer:

yes here is the answer key

for the last question it is a challenge question, here is the answer:

(A) The mass of the cart is 1.214 kg

(B) The mass of one fan is 1.262 kg

(C) The mass of one of the draggable mass units is 3.131 kg

Explanation:

An electrolysis reaction is
A) spontaneous
B) exothermic
C) non-spontaneous
D) hydrophobic

Answers

Answer:

it's non-spontaneous

Explanation:

I hope it helps you

Which best explains why a person can tell the difference between a whisper and a yell?
O Sound waves turn into chemical signals that indicate certain sounds.
Different vibrations in the ear cause the bras o interpret different sounds.
The fluid in the cochlea picks up electrical signals for the intensity of sound.
The eyes see what is making the noise and help the brain process the sound.

Answers

Answer:

The difference is the louder the sound the bigger the waves and your ears collect the sound waves and brings it to you brain

Explanation:

Answer:

Hey! The correct answer is D.) Different vibrations in the ear cause the brain to interpret different sounds.

Explanation:

I got a low score on the test but yeah I got that one correct so It's D

How many moles does 205 g of helium,He, contain ?

Answers

Answer:

4.002602

Explanation:

Seems Am Converting Between Grams Helium And Mole.

No. of moles = mass / relative molecular mass
n = m / Mr
n = 205 g / 4 g/mol
n = 51.25 mol

How does the water cycle contribute to the "brown ocean" effect?

Answers

Answer:

Hurricanes and tropical storms gain their power from heated water evaporating from the ocean.

Explanation:

Brown Water Effect The brown ocean effect is an observed weather phenomenon involving some tropical cyclones after landfall. Normally, hurricanes and tropical storms lose strength when they make landfall, but when the brown ocean effect is in play, tropical cyclones maintain strength or even intensify over land surfaces.

PLEASE HELP WILL GIVE BRAINLIEST

Answers

Answer:

Explanation:

Gravity pulls the balls down the ramp, and the force of gravity is bigger on larger-mass objects. The extra force on the bigger ball means that it has more energy when it gets to the bottom of the ramp and consequently travels more before stopping.

what is the result of collisions of particles with an object? *

A. pressure on the object
B. pressure away from the object
C. the object gets lighter
D. the object gets heavier

Answers

Answer:

Particle collisions cause pressure.

Explanation:

The fast motion of gas particles gives them a relatively large amount of kinetic energy. Recall that kinetic energy is the energy that an object possesses because of its motion. The particles of a gas move in straight-line motion until they collide with another particle or with one of the walls of its container.

Which are the two key factors that affect the rate of weathering of rocks?

Select 2.


A Climate


B Rock Type


C Bedrock

Answers

Answer:

A and B.

Explanation:

Climate:

High temperatures and greater rainfall increase the rate of chemical weathering. Lower temperatures can break rocks to by freezing water inside of a rock cracks. When it freezes it expands the water and forces the crack of the rock to expand.

Rock Type:

Certain types of rock are very resistant to weathering. Igneous rocks, especially intrusive igneous rocks such as granite, weather slowly because it is hard for water to penetrate them. Other types of rock, such as limestone, are easily weathered because they dissolve in weak acids.

2 FeCl2
+ 13 KClO4
+ H2
SO4
→ 2 Fe(ClO3
)3
+
K2
SO4
+ 11 KClO3
+ H2
O
Calculate the grams of KClO3
arising from the
reaction of 2.50 g of KClO4
with 150 mg of FeCl2
in excess of H2
SO4
.

Answers

Taking into account the reaction stoichiometry and limiting reagent, 0.7977 grams of KClO₃ are formed from the  reaction of 2.50 g of KClO₄  with 150 mg of FeCl₂  in excess of H₂SO₄.

In first place, the balanced reaction is:

2 FeCl₂ + 13 KClO₄ + H₂SO₄ → 2 Fe(ClO₃)₃ + K₂SO₄ + 11 KClO₃ + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

FeCl₂: 2 molesKClO₄: 13 moles H₂SO₄: 1 moleFe(ClO₃)₃: 2 moles K₂SO₄: 1 mole KClO₃: 11 moles H₂O: 1 mole

The molar mass of the compounds is:

FeCl₂: 126.75 g/moleKClO₄: 138.55 g/mole H₂SO₄: 98 g/moleFe(ClO₃)₃: 306.2 g/moleK₂SO₄: 174.2 g/moleKClO₃: 122.55 g/moleH₂O: 18 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:  

FeCl₂: 2 moles× 126.75 g/mole= 253.5 gramsKClO₄: 13 moles× 138.55 g/mol= 1801.15 grams H₂SO₄: 1 mole× 98 g/mole= 98 gramsFe(ClO₃)₃: 2 moles× 306.2 g/mole= 612.4 gramsK₂SO₄: 1 mole× 174.2 g/mole= 174.2 gramsKClO₃: 11 moles× 122.55 g/mole= 1348.05 gramsH₂O: 1 mole× 18 g/mole= 18 grams

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction and a simple rule of three as follows: if by stoichiometry 1801.15 grams of KClO₄ reacts with 253.5 grams of FeCl₂, if 2.50 grams of KClO₄ react how many mass of FeCl₂ will be needed?

[tex]mass of FeCl_{2}=\frac{2.50 grams of KClO_{4} x253.5 grams of FeCl_{2}}{1801.15 grams grams of KClO_{4}}[/tex]

mass of FeCl₂=0.35 grams

But 0.35 grams of FeCl₂ are not available, 150 mg= 0.150 grams (being 1000 mg= 1 grams) are available. Since you have less mass than you need to react with 1801.15 grams of KClO₄, FeCl₂ will be the limiting reagent.

Then the following rule of three can be applied: if by reaction stoichiometry 253.5 grams of  FeCl₂ form 1348.05 grams of KClO₃, 0.150 grams of FeCl₂ form how much mass of KClO₃?

[tex]mass of KClO_{3}=\frac{0.150 grams of FeCl_{2}x1348.05 grams of KClO_{3} }{253.5grams of FeCl_{2} }[/tex]

mass of KClO₃= 0.7977 grams

Then, 0.7977 grams of KClO₃ are formed from the  reaction of 2.50 g of KClO₄  with 150 mg of FeCl₂  in excess of H₂SO₄.  

Learn more about reaction stoichiometry:

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Could a single person or animal be a point source pollution

Answers

Yes, mostly humans do things 24/7 that pollutes the air around us

Answer:

the main cause of pollution is mankinds work like gases and extreme heat caused by factories and cars and littering is also caused by people's careless throwing away so In term man kind is responsible for the pollution

Explanation:

A 4.190 g sample of an oxide of chromium contains 2.179g of chromium, what is its empirical formula?

a. CrO2
b. Cr2O
c. CrO3
d. Cr2O3

Answers

I'm not sure but I think it is C. CrO3

Explain the verse below in your own words in a little summary.




Hebrews 11:7

Answers

God had warned Noah of the flood and directed him to build an ark. Noah had faith in God and began building.

Answer:

God Warned Noah for the Flood comindg to Earth to wash away all the bad people's lives and god also said get couple animals girls and boys then build an ark then bring your family and food there to then noah had a faith in god so he obey and start builind the ark in a top of a mountain

Explanation:

Hebrews 11:7

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the idea that a supernova is preceded by a huge burst of neutrinos is edgar allan poe died in 1849. what is going on in dickens life at that time? 11. Write the equation of a line passing through the two points. First find the slope and the y-intercept(0,3) and (2,6) find the derivitive of f(x)=(x+9)/(x+1) uhhh 6th grade work pls help You hang a light in front of your house using anelaborate system to keep the 12-kg object in staticequilibrium (Figure 1). What are the magnitudes of theforces that the ropes must exert on the knot connectingthe three ropes if 02 = 639 and 03 = 45 ? Need some help on this question please What effect did the use of nuclear weapons during World War II have on international affairs following the war?Group of answer choicesA. It caused the entire world to fear the U.S.B. It caused the United Nations to abolish the use of nuclear weapons.C. It started an arms race between the U.S. and the Soviet Union.D. It started the idea of Soviet superiority.this pretest is kicking my butt :(((( which particle diagram represents a sample of oxygen gas at stp A potter makes cups and saucers in a factory. He is paid $1.44 perbatch of cups and $1.20perbatch of saucers. What is his gross pay ifhe makes 9 batches of cups and 11 batches of saucers in one day? What impact did the film The Birth of a Nation have on society? Some countries pursued a policy of _________, or supporting neither side of the war.A) mobilizationB) militarismC) ultimatumD) neutrality Determine the two most important skills a syntheticbiologist will need in order to make themselves a more marketable employee. Inwhat ways can they use these skills to improve society? Give an example of whatthis could look like. 0.081 to the nearest hundredth The bed of Jerry's pickup truck is 6 feet long. Ona scale model of the truck, the bed is 1/4 inchWhat is the scale of the model?6 ft The school counselor needs to meet with students who have more than three absences. Here is some of the data about the students. Who are the individuals in this data set?- Students- School counselors- Homeroom teachersWhat does this data set contain?- 2 variables, 1 of which is quantitative- 2 variables, 2 of which are quantitative- 5 variables, 1 of which is quantitative- 5 variables, 3 of which are quantitative What is the scale factor k? The hummingbird nectar recipe is 4 cups ofwater to every 1 cup of sugar. If I double the recipe, I will need 8 cups ofwater and 2 cups of sugar. If I want half of the recipe, I would need 2 cupsof water and 1/2 cup of sugar. What is the scale factor of water to sugar?k= Choose the angle which is represented by the name.R What is the distance between -9and -2 on the number line PLESE HELP ME describe what life may have been like for the people depicted in the illustration what may have been some of the challenges they faced how was their life different from someone living in a more rural environment.There is a picture of the illustration.