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Margaret [11]
4 years ago
13

Calculate the [OH−] value with [H3O+]=3.0×10−9M.

Chemistry
1 answer:
saw5 [17]4 years ago
4 0
Yessssssssdddssssssss

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Read 2 more answers
If 3.89 × 1024 atoms of a noble gas is collected and it has a mass of of 848 grams, this element is most likely a. He b. Ne c. A
bearhunter [10]

Answer:

Xenon

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by N_0.

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N_a=6.023\times 10^{23}

Let the molar mass of the element is x g/mol

So,

6.023\times 10^{23} atoms have a mass of x g

Also,

3.89\times 10^{24} atoms have a mass of \frac{x}{6.023\times 10^{23}}\times 3.89\times 10^{24} g

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x= 131.3 g/mol

This mass correspond to xenon.

3 0
4 years ago
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