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qaws [65]
3 years ago
10

PLEASE HELP ASAP!!

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
5 0

Answer:

3 is my most important

Explanation:

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When metals react with acid, bubbles of what gas are produced?​
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Answer:

hydrogen is the answer

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3 years ago
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How many grams of octane (C8H18) must be burned to produce 300.0g of CO2?
nika2105 [10]

Answer:

m_{C_8H_{18}}=85.67gC_8H_{18}

Explanation:

Hello there!

In this case, according to the given combustion reaction of octane, it is possible for us to perform the stoichiometric method in order to calculate the mass of octane that is required to consume 300.0 g of oxygen by considering the 2:25 mole ratio, and the molar masses of 114.22 g/mol and 32.00 g/mol respectively:

m_{C_8H_{18}}=300.0gO_2*\frac{1molO_2}{32.00gO_2}*\frac{2molC_8H_{18}}{25molO_2}*\frac{114.22gC_8H_{18}}{1molC_8H_{18}}   \\\\m_{C_8H_{18}}=85.67gC_8H_{18}

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6 0
3 years ago
1. Air shows the property of<br> a) N<br> b) 02<br> c) Both a) and b)<br> d) None of these
kupik [55]

Answer:

c) Both a) and b)

Explanation:

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6 0
2 years ago
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Wskaż substancję, która ma największą zawartość procentową węgla w cząsteczce:
MrRa [10]

Answer: C2H4

Explanation:

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The composition of Ethylene Glycols i.e C2H4(OH)2 is Carbon of 39.7%, 9.7% hydrogen and 51.6% oxygen.

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From the information given, the substance with the highest percentage of carbon is C2H4

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3 years ago
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