All categories

2 years ago

Which statement best describes the relationship between kinetic energy, mechanical energy, and potential energy?

Chemistry

1 answer:

Luba_88 [7]2 years ago

5 0

Answer:

Explanation:

because kinetic and potential are both parts of mechanical energy

you should know we learned it in class

You might be interested in

How many liters of oxygen are required to react completely with 14.8 mol of Al?

Bond [772]

Answer:

296 L

Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

4Al + 3O₂ ⟶ 2Al₂O₃

n/mol: 17.4

1. Moles of O₂

$n = \text{17.4 mol Al}\times \dfrac{\text{3 mol O}_{2}}{\text{4 mol Al}}= \text{13.05 mol O}_{2}$

2. Volume of O₂

You haven't given the conditions at which the volume is measured, so I assume it is at STP (0 °C and 1 bar).

At STP the molar volume of a gas is 22.71 L.

$V = \text{13.05 mol}\times \dfrac{\text{22.71 L}}{\text{1 mol }}= \textbf{296 L}$

8 0

3 years ago

Find the mass of 4.5 moles of H3PO4

Contact [7]

Hey there!

H₃PO₄

Find molar mass.

H: 3 x 1.008 = 3.024

P: 1 x 30.97 = 30.97

O: 4 x 16 = 64

---------------------------------

97.994 grams

The mass of 1 mole of H₃PO₄ is 97.994 grams.

We have 4.5 moles.

97.994 x 4.5 = 440

The mass of 4.5 moles of H₃PO₄ is 440 grams.

Hope this helps!

6 0

3 years ago

What is different between an onic bond and a covalent bond?

Dmitriy789 [7]

The answer to the question

6 0

3 years ago

Read 2 more answers

Fluorine and Nitrogen react to form a covalent molecule. Which best describes the molecule they will make?

mafiozo [28]

I think a is the correct answer

7 0

3 years ago

How many moles are in a 111.5 gram sample of sodium chloride, NaCl?

Katarina [22]

Answer: 1.91 moles

Explanation:

First you want to find the molar mass of NaCL

Na = 22.99g Cl = 35.45g

22.99g + 35.45g = 54.44g

Then divide 111.5g by 54.44g and this will give you moles.

5 0

2 years ago