Chemistry College

The mass of one gallon of water is approximately 3.78 kg or 3780 grams. How many moles are contained in one gallon of water?
a. 102
b. 210
c. 120
d. 201

Answers

Answer 1

Answer:

Number of moles of water = 210 mol

Explanation:

Given data:

Mass of water = 3780 g

Number of moles of water = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of water = 18 g/mol

Number of moles = 3780 g/ 18 g/mol

Number of moles of water = 210 mol

Related Questions

Not all elements readily fit in the metal or non metal groupings. These elements are called metalloids. Examine the table below and classify W, X and Y as metals, metalloids or non-metals.

W= Lustre: Moderately high
Electrical conductivity: Low
Density: Medium
Melting point: Very high

X= Lustre: Low
Electrical conductivity: Nil
Density: Low
Melting point: Low

Y= Lustre: High
Electrical conductivity: High
Density: High
Melting point: High​

Answers

Brown luster moderately high conductivity

help put them in order

Answers

Answer:

hello

Explanation:

hi

what is this element

Answers

Answer:

Oxygen

Explanation:

From the question given above, the following data were obtained:

Number of electrons = 8

Number of protons = 8

Number of Neutrons = 8

Name of element =?

Next, we shall determine the atomic number of the element. This can be obtained as follow:

The atomic number of an element is simply defined as the number of protons in the atom of the element. Mathematically, it is expressed as:

Atomic number = proton number

From the question given above,

Number of protons = 8

Therefore,

Atomic number = 8

Comparing the atomic number of the element (i.e 8) with those in the periodic table, we can conclude that the element is oxygen since no two elements have the same atomic number.

30 POINTS HELPP PLEASE

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Answers

1: selective breeding

2:traits

3: crop species

4: domestic

5: diverse

6: artificial

7: uniform

in your opinion if the answer is correct please like n mark MI s brain list

pLeeease help im so tired and i need to SLEEP. Answer the 1s you know
1. How does the mechanical energy of a ball that is starting to fall compare to its total energy just before it hits the floor?
2. When you stand in sunlight, what form of energy is emitted by the sun?
3. An eye doctor wants to design reading glasses that also function as sunglasses. Should the eye doctor use a reflective-transparent material or a reflective-opaque material for the lenses? Support your claim.

Answers

1. when the ball is just starting to fall, it has high potential but low kinetic energy. when it hits the floor, it has high kinetic but low potential energy
2. heat energy
3. reflective-transparent would be best, as they can reflect some light while let other light through, reflective-opaque would be useless in any circumstances because no light at all would be able to get through

Which of the following statements about tobacco use is not true?

a. Nicotine narrows blood vessels and puts added strain on the heart.

b. Smoking improves athletic performance.

c. Smoking can wreck lungs.

d. Nicotine in smokeless tobacco is addictive.

Answers

Explanation:

b and c statements are not true

if it helps you then plzz mark me brainliest

Answer:

B.) Smoking improves Athletic performance

Explanation:

How many moles are in 99.5 grams of titanium? Round your answer to the nearest hundredth. Be sure to include units.

Answers

Answer:

1000

Explanation:

99.5/ 47.87= 2.078≈2.1 mole
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