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Vikentia [17]
3 years ago
5

What is chemical change

Chemistry
1 answer:
Igoryamba3 years ago
8 0

Answer:

Chemical change is a chemical process that occurs when a substance combines with another to create an entirely new substance, this process is also called chemical synthesis

Explanation:

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CH3CH2OH is an organic compound that is soluble in water. What type of compound is this?
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Ethanol

Explanation:

CH3CH2OH is Ethanol

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Find the mass of 0.235 moles of SiO2? (NOTE: use correct significant figures!)
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Answer: 14.1g

Explanation:

Given that,

number of moles of SiO2 = 0.235 moles

Mass in grams = Z (let unknown value be Z)

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To get the molar mass of SiO2, use the atomic mass

Silicon = 28g;

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i.e Molar mass of SiO2 = 28g + (16g x 2)

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Now, apply the formula

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Z = 0.235 moles x 60g/mol

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Thus, the mass of SiO2 is 14.1 grams.

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3 years ago
A sample of 10K gold contains the following: 10.0g gold, 4.0g silver, 5.0g copper, and 5.0g nickel. What is the percent gold in
stellarik [79]

Answer:

oook

hi I am so sorry sorry sorry sorry I don't no answer

Explanation:

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6 0
2 years ago
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84 pt =_____ qt<br><br>5.0 gal =_____ L​
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5.0 gal =___18.9271__ L​

Explanation:

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70<br><br> What is 27/100 plus 3/10 equals
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Answer:

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Explanation:

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