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borishaifa [10]
3 years ago
12

A 7.36 g sample of copper is contaminated with a additional 0.51 g sample of zinc. suppose an atomic mass measurement was perfor

med on this sample. What would be the measured atomic mass?
64.46
63.67
63.94
65.38
Chemistry
1 answer:
liubo4ka [24]3 years ago
5 0
<span>63.67 
Hope this helps.</span>
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djyliett [7]

Answer:

B

Explanation:

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How many joules of heat are absorbed to raise the temperature of 650 grams of water from 5.00c to it's boiling point, 100c
xenn [34]

Answer : The amount of heat absorbed are, 258485.5 J

Solution :

Formula used :

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

where,

Q = heat gained  = ?

m = mass of water = 650 g

c = specific heat of water = 4.186J/g^oC      

\Delta T=\text{Change in temperature} 

T_{final} = final temperature = 100^oC

T_{initial} = initial temperature = 5^oC

Now put all the given values in the above formula, we get the final temperature of copper.

Q=650g\times 4.186J/g^oC\times (100-5)^oC

Q=258485.5J

Therefore, the amount of heat absorbed are, 258485.5 J

7 0
3 years ago
20) Mg + O2 → MgO
jonny [76]

The given reaction Mg + O₂ → MgO is a type of Synthesis reaction. Hence option (1) is correct.

<h3>What is Synthesis reaction ?</h3>

Synthesis reactions are reactions that occur when two different atoms or molecules interact to form one molecule or compound.

It is also known as combination reaction

In the given reaction Mg and O combines with each other to form one product i.e, MgO. Hence, The given reaction Mg + O₂ → MgO is a type of Synthesis reaction. Thus, option (1) is correct.

Learn more about chemical reaction here ;

brainly.com/question/27948961

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mrs_skeptik [129]
The motion or kinetic energy of the particles determine the state of matter
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