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IgorC [24]
2 years ago
12

the mass of chemical a is 2g and the mass of chemical b is 5g. if the two chemical are mixed and a chemical reaction takes place

. what is the mass of the product?
Chemistry
1 answer:
OverLord2011 [107]2 years ago
5 0

Answer:

the answer is 7g

Explanation:

I'm not really sure about the answer but the way i did it is i added 2+5g

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What net ionic equation describes the reaction when these solutions are mixed?
GarryVolchara [31]
Balanced chemical reaction:
2Na₃PO₄(aq) + 3CaCl₂(aq) → 6NaCl(aq) + Ca₃(PO₄)₂(s).
Ionic reaction:
6Na⁺(aq) + 2PO₄³⁻(aq) + 3Ca²⁺(aq) + 6Cl⁻(aq) → 6Na⁺(aq) + 6Cl⁻(aq) + Ca₃(PO₄)₂(s).
Net ionic reaction: 2PO₄³⁻(aq) + 3Ca²⁺(aq) → Ca₃(PO₄)₂(s).
<span>(aq) means that substances are dissociated on cations and anions in water.
</span>(s) means solid.
5 0
3 years ago
balloon filled with water is places in a microwave until it bursts. Name two different physical changes that occur during this r
Kisachek [45]

Answer:

dont know

Explanation:

3 0
3 years ago
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Which of the following is evidence of a chemical change?
krek1111 [17]
<span>the formation of a gas
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5 0
3 years ago
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Which of the following describes the correct order for relative solubility of minerals in sedimentary rocks?
NARA [144]

Answer:

Evaporate minerals are more soluble than calcite and quartz.

Explanation:

Evaporate minerals are the water soluble minerals which at higher concentration precipitate out and crystallized forming rocks.

example of chemicals present are:

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Quartz is silica (very less soluble, or insoluble)

Calcite is calcium carbonate, again an insoluble salt.

Thus

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8 0
3 years ago
Calculate the percent composition by mass of iron in Fe(NO3)3
Dovator [93]

Answer:

It's 23.14 percent

Explanation:

First, the mass of all the elements are:

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In this molecule you have 3 atoms of N, and 9 atoms of O, so:

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16•9 = 144

The whole mass of the molecule is:

56 + 42 + 144 = 242

242/100 = 2.42, so 1% is 2.42

56/2.42 = 23.14%

6 0
3 years ago
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