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AveGali [126]
3 years ago
11

Which term refers to the sum of the kinetic energy of all the particles in an object? O A. Heat O B. Potential energy O C. Therm

al energy O D. Temperature​
Chemistry
1 answer:
Zina [86]3 years ago
3 0

Answer:

C. Thermal energy

Explanation:

Thermal energy is the sum of the kinetic and potential energy of all the particles in an object.

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Calculate the concentration imports per million ppm of DDT if a sample size of 5000 g contained 0.10 g DDT
nevsk [136]

Answer:

20ppm

Explanation:

parts per million are defined as the mass of solute in mg (In this case, mass of DDT) per kg of sample.

To solve this question we must find the mass of DDT in mg and the mass of sample in kg:

<em>Mass DDT:</em>

0.10g * (1000mg / 1g) = 100mg

<em>Mass sample:</em>

5000g * (1kg / 1000g) = 5kg

Parts per Million:

100mg / 5kg =

<h3>20ppm</h3>
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3 years ago
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1. How many moles of hydrogen are needed to completely react with two moles of nitrogen?
Arlecino [84]

N2 + 3H2  -->  2NH3

Answer: 6 moles of hydrogen are needed to react with two moles of nitrogen.

Explanation:

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