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Serga [27]
3 years ago
14

How can the conversion from potential energy to kinetic energy provide energy that is useful to people

Chemistry
1 answer:
DanielleElmas [232]3 years ago
8 0
Because people walk
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ILL GIVE A BRAINLY PLS HELP
Oksana_A [137]

Atoms are the unit of the molecule of the compound. The 3.01 x 10²⁴  atoms of oxygen are present in 5 moles of water and 3 moles of carbon dioxide in the sample.

<h3>What are atoms?</h3>

Atoms are the smallest fundamental unit of the compounds that can be given by Avogadro's number.

For calculating the oxygen atoms in 5 mole water:

If 1 mole = 6.02 × 10²³

Then, 5 moles = 5 ×  6.02 × 10²³

Hence, 3.01 x 10²⁴ atoms of oxygen are present in 5 moles of water.

Moles of carbon dioxide in the sample is calculated as:

If 1 mole of carbon dioxide = 6.02 × 10²³ molecules

Then moles in 1.8 x 10²⁴ molecules will be,

(1.8 x 10²⁴ molecules) ÷ (6.02 × 10²³ molecules)  = 3 moles

Hence, 3 moles of carbon dioxide is present in the sample.

Learn more about Avogadro's number here:

brainly.com/question/5098076

#SPJ1

3 0
2 years ago
Help me 5-8 please and thank you
defon
-3
explanation: if you subtract 5 from 8 you get 3 just put a negative sign and you have your answer :)
4 0
3 years ago
The freezing point of pure benzene (C₆H₆) is 5. 49 °C. The freezing point of a solution made using toluene (C₇H₈) in benzene is
Irina18 [472]

The molality of the toluene is 1.46 mol/kg.

<h3>What is molality?</h3>

The molality of a solution is its molal concentration. Molal concentration is denoted by m. It is the mol of solute dissolves in 1 Kg solvent.

The depression at freezing point is directly proportional to the molality of the solution. The equation we use for this type of problem is:

ΔT=iKm f_m

Where,  ΔT f_m is depression at freezing point, i is Van't hoff factor, m is molality and K_f is the freezing point depression constant.

Toluene is a non-electrolyte and so the value of i for this is 1.

Depression at a freezing point is given as -13.0^0 and the K_f is given as 5.12. So, we could calculate the molality of the solution using the equation written above.

Let's plug in the values in the equation:

ΔT=iKmf_m

-7.51 =1 x5. 12 xm

m = \frac{7.51}{5. 12}

m = 1.46 m

It means the molality of the solution is 1.46 mol/kg.

Hence, the molality of the solution is 1.46 mol/kg.

Learn more about the molality of the solution here:

brainly.com/question/12123356

#SPJ1

3 0
1 year ago
Please help
Ket [755]
True
step by step explanation:
8 0
2 years ago
Read 2 more answers
Question : <br>➠Define Intertia .​
konstantin123 [22]

Inertia is defined as a property of matter by which it remains at the state of rest or in uniform motion in the same straight line unless acted upon by some external force.

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3 0
2 years ago
Read 2 more answers
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