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o-na [289]
3 years ago
15

An atom is

Chemistry
2 answers:
34kurt3 years ago
8 0
The answer is a. the smallest unit of matter that maintains its chemical identity.
Dennis_Churaev [7]3 years ago
3 0

Answer:

a. the smallest unit of matter that maintains its chemical identity.

Explanation:

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How would you balance the following equation NaOh + H2CO3=Na2CO3+H2O ?
mamaluj [8]

Answer: put 2 in front of NaOH and 2 also in front of H2O

Explanation: 2NaOH + H2CO3 —> Na2CO3 + 2H2O

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There is an old story about a king and his crown. The king hired a goldsmith to make him a crown a pure gold. After the king rec
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3 years ago
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A student attempted to identify an unknown compound by the method used in the experiment. She found that when she heated the sam
yanalaym [24]
Na2CO3 + 2Cl- ⇒ 2NaCl + CO3^-2 
<span>
1 mole of Na2CO3 = 106 g </span>
<span>2 moles of NaCl     = 2 x 58.4
                               = 116.8 g 
</span>Na2CO3 would increase by 116.8 / 106 = 1.10 to form 2NaCl.
<span>0.4862 g x 1.10 = 0.515 grams of NaCl.
</span>
K2CO3 + 2Cl- ⇒ 2KCl + CO3^-2 
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<span>2 moles of KCl = 149.1 </span>
<span>
K2CO3 would increase by </span>149.1 /138.2 = 1.079 <span>to form 2KCl
</span>
<span> 0.4862 x 1.079 = 0.5246 g</span>


3 0
3 years ago
Read 2 more answers
Consider the chemical equation. CuCl2 + 2NaNO3 mc023-1.jpg Cu(NO3)2 + 2NaCl What is the percent yield of NaCl if 31.0 g of CuCl2
lana [24]
CuCl2 + 2NaNO3 ---->  Cu(NO3)2 + 2NaCl

using molar masses:-
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3 years ago
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