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bearhunter [10]
3 years ago
5

PLEASE HELP NEED ANSWER FAST

Chemistry
1 answer:
Lady_Fox [76]3 years ago
3 0

Answer:

communicate the important work you have done in lab

Explanation:

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tino4ka555 [31]

Answer:

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How many grams of naoh are needed to prepare 500 ml of 0.125 m naoh?
Romashka-Z-Leto [24]

First let us calculate for the number of moles needed:

moles NaOH = 0.125 M * 0.500 L = 0.0625 mol

 

The molar mass of NaOH is 40 g/mol, hence the mass is:

mass NaOH = 0.0625 mol * 40 g/mol

<span>mass NaOH = 2.5 grams</span>

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If you have 5.22*1022 molecules of glucose (C6H12O6) how many grams is this?
lianna [129]

Answer:

5.22*1022 molecules of glucose (C6H12O6)  is equal to 15.08 grams

Explanation:

Number of molecule of glucose in one mole = 6.023 * 10^{23}

Now mass of one mole of glucose = 180 grams

Number of moles in 6.023 * 10^{23} molecules of glucose = 1

Number of moles in 1 molecules of glucose =  \frac{1}{6.023 * 10^{23}}

Number of moles in 5.22 * 10^{22} molecules of glucose =  \frac{5.22* 10^{22}}{6.023 * 10^{23}}  = 0.083 moles

Weight of 0.083 moles

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