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Rudiy27
2 years ago
14

A scientist has two samples of a substance. Both samples have the same temperature. One sample has a mass of 10 g. The other sam

ple has a mass of 20 g. Compare the average kinetic energy and total kinetic energy of the particles in each sample.
Chemistry
1 answer:
Serga [27]2 years ago
5 0

A scientist has two samples of a substance. Both samples have the same temperature. The average kinetic energy of the two samples is the same but the total kinetic energy of the particle with a mass of 20 g is greater than the one with a mass of 10 g.

From the given information:

  • sample A = 10 g
  • sample B = 20 g

           The average kinetic energy is relative to the temperature and the temperature can be used as a determining factor when measuring the average kinetic energy. From the given question, it was stated that both samples have the same temperature, as such, we can infer that they have the same average kinetic energy.

           The total kinetic energy of an object is equal to the sum of the kinetic energies produced from every kind of motion. The total kinetic energy of a particle is affected by the speed of the motion and the mass of the sample. As such, the mass of the sample with 20 g will have a greater total kinetic energy than a mass with 10 g.

Therefore, from the above explanation, we can conclude that the mass of the average kinetic energy of the two samples is the same but the total kinetic energy of the particle with a mass of 20 g is greater than the one with a mass of 10 g.

Learn more about kinetic energy here:

brainly.com/question/12669551?referrer=searchResults

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Please help me.. i would appreciate it.. 50 points and will mark brainliest
kiruha [24]
Answer: The mass of Cu produced is 4.88 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ……(1)

Given mass of aluminum = 2.98 g

Molar mass of aluminum = 27 g/mol

Plugging values in equation 1:

\text{Moles of aluminum}=\frac{2.98g}{27g/mol}=0.1104 mol

The given chemical equation follows:

2Al(s)+3CuSO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3Cu(s)

By the stoichiometry of the reaction:

If 2 moles of aluminum produces 3 moles of Cu

So, 0.1104 moles aluminium will produce = \frac{3}{2}\times 0.1104=0.1656mol of Cu

Molar mass of Cu = 63.5 g/mol

Plugging values in equation 1:

\text{Mass of Cu}=(0.1656mol\times 63.5g/mol)=10.516g

The percent yield of a reaction is calculated by using an equation:

\% \text{yield}=\frac{\text{Actual value}}{\text{Theoretical value}}\times 100 ……(2)

Given values:

% yield of product = 46.4 %

Theoretical value of the product = 10.516 g

Plugging values in equation 2, we get:

46.4=\frac{\text{Actual value of Cu}}{10.516g}\times 100\\\\\text{Actual value of Cu}=\frac{46.4\times 10.516}{100}\\\\\text{Actual value of Cu}=4.88g

Hence, the mass of Cu produced is 4.88 g
5 0
2 years ago
Read 2 more answers
What is the maximum amount of kcl that can dissolve in 200 g of water? (the solubility of kcl is 34 g/100 g h?
posledela
The answer is 68 g
hope this helps!!
4 0
3 years ago
CAN YOU PLEASE HELP ASAP​
Helga [31]
Your answer would be D you welcome !
7 0
3 years ago
Read 2 more answers
Hydrogen reacts with oxygen to form water. Which of these best describes
Semmy [17]
A



sorry if I am wrong.
7 0
3 years ago
Suppose there is 0.63 g of HNO3 per 100 mL of a particular solution. What is the concentration of the HNO3 solution in moles per
Vadim26 [7]

Answer:

There are 0.09996826 moles per liter of the solution.

Explanation:

Molar mass of HNO3: 63.02

Convert grams to moles

0.63 grams/ 63.02= 0.009996826

Convert mL to L and place under moles (mol/L)

100mL=0.1 L

0.009996826/0.1= 0.09996826 mol/L

4 0
3 years ago
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