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aalyn [17]
3 years ago
13

Which sample of copper has atoms with the lowest average kinetic energy?

Chemistry
1 answer:
algol [13]3 years ago
4 0
I believe your answer is 40g 15*C I hope that helps.
You might be interested in
2H2 + O2 → 2H2O
pantera1 [17]
Okay
Mr (H2O)= 18g
therefore moles of H2O
is 720.8/18= 40.04mol
the ratio of H2 to O2 to H2O is
2 : 1 : 2
so moles of H2 is same as H2O here
H2= 40.04moles

moles of O2 is half
so 40.04 x 0.5
20.02moles

grams of O2 is
its moles into Mr of O2
that's 20.02 x 32 = 640.64g

6 0
3 years ago
The molar mass of the compound was found to be 30.069 g/mol. what is the molecular formula? express your answer as a chemical fo
kodGreya [7K]

For us to accurately determine what compound this is, additional info must be given. However I can suggest two compounds which have molecular mass of about 30.07 g/mol.

1. It could be NO or nitric oxide.

The molecular mass is 16 + 14= 30 g/mol

But if we search the exact weight, it is 30.01 g/mol

 

2. It could also be (CH3)2  or ethane.

The molecular mass is 2*12+ 6*1= 30 g/mol

But if we search the exact weight, it is 30.07 g/mol.

 

<span>So we could say it more likely to to be (CH3)2 </span>

6 0
3 years ago
How many grams of hydrogen gas get produced if 10 g of aluminum reacts?
Degger [83]

Answer:

9.8

Explanation:

8 0
3 years ago
Which one is a true statement about endothermic reactions? a: More heat is given off than is put into the reaction. b :The react
Setler [38]
A because it gets hot
7 0
3 years ago
How do I complete this column graph of the number of conductors vs the number of insulators
Vikentia [17]

Answer:

sorry but i am doing this for point

Explanation:

how do I complete this column graph of the number of conduct vs the number of

4 0
3 years ago
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