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coldgirl [10]
3 years ago
10

What type of compound is Sodium hydroxide? A.acid B.base C.element D.salt

Chemistry
2 answers:
ollegr [7]3 years ago
6 0

Answer: B: Base

Explanation: I took the test

morpeh [17]3 years ago
3 0
The answer is B
b base
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Calculate the number of moles of O2 gas held in a sealed 2.00 L tank at 3.50 atm and 25 ℃.
Leviafan [203]

Answer:

n=0.286mol

Explanation:

Hello,

In this case, we consider oxygen as an ideal gas, for that reason, we use yhe ideal gas equation to compute the moles based on:

PV=nRT\\\\n=\frac{PV}{RT}

Hence, at 3.50 atm and 25 °C for a volume of 2.00 L we compute the moles considering absolute temperature in Kelvins:

n=\frac{3.50atm*2.00L}{0.082\frac{atm*L}{mol*K}(25+273)K} \\\\n=0.286mol

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<span>the balanced chemical equation for the reaction is as follows;
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 answer is 0.091 mol
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