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k0ka [10]
4 years ago
15

You mix a blue and a clear liquid together and they turn a bright green. Has a chemical reaction occurred? Why or why not

Chemistry
1 answer:
777dan777 [17]4 years ago
3 0
No. Changing of color is a physical change.
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2 H2 + O2= 2 H2O
AVprozaik [17]

Answer:

the answer is 4.0moles

Explanation:

1mole of O2 produce 2moles of H2O/x mole will produce 8.0moles of H2O then the answer is 4.0moles.

3 0
3 years ago
Which expression is equivalent to 6m + (m - 2)(m + 7) + 3?
dedylja [7]
It’s is m2 +11m-11
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8 0
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LenKa [72]
<span>the simplest organic molecules, consisting of only carbon and hydrogen and with only single bonds between carbon atoms.
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3 0
3 years ago
There are only two isotopes of gallium: ^69Ga (68.926 amu) and ^71Ga(70.025 amu). The average atomic mass of gallium is 69.723 a
SVEN [57.7K]
The question ask for the percentage of the abundance of galium-69 where there is two isotopes of galium: the 69Ga and the 71Ga. The average atomic mass of gallium is 69.723 amu. So the formula would be <span>69.723amu=(%x)∗(68.926amu)+(1−%x)∗(70.025amu) and the answer to this is 1.58%</span>
3 0
3 years ago
Which of the following is an element? A. carbon monoxide gas (CO) B. magnesium chloride salt (MgCl) C. zinc metal (Zn) D. hydroc
barxatty [35]
The answer is C) zinc (Zn)
6 0
4 years ago
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