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mihalych1998 [28]
3 years ago
14

How may moles are in 145.54 g of SIO2

Chemistry
1 answer:
KonstantinChe [14]3 years ago
8 0

Answer:

The number of mole is 2.422 moles

Explanation:

To calculate the number of mole, we have to use the formula n = m /Mm

n - moles

m - mass

Mm - molar mass

Let's calculate the molar mass of the compound SiO2

Si - 28.0855

O - 15.999

Note: there are two atoms of oxygen in the compound

Mm of SiO2= 28.0855+ 2* 15.999

= 60.0835g/mol

Now, we calculate the number of moles

n = 145.54g/ 60.0835g/mol

= 2.422mol

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130 Liters

Explanation:

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A sample of 10K gold contains the following: 10.0g gold, 4.0g silver, 5.0g copper, and 5.0g nickel. What is the percent gold in
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Which is stronger - the attractive forces between water molecules and chromium and chloride ions, or the combined ionic bond str
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Answer:

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<em>F = m × a </em>

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