Its c ok im sorry if i got the last answer wrong

We will use this formlula: Mass in grams = Number of moles x Molecular mass of 1 mole.

Since, we know the avagadro number is 6.02 x 10²³, we only have two unknown values left which are the molecular mass of CH3OH and its mole.

Molecular Mass: C = 12, H= 1, O = 16, since we have C=12, H4 = 4, O = 16, we will add them up: 12 + 4 + 16 =32

We know that one mole of anything = 6.02 x 10²³.

So we will use this formula to find the mole of methanol: Number of moles = Number of molecules / Avagadro number

Number of moles of CH3OH = (9.79 x 10^24)/6.02 x 10²³) = 16.263 moles.

Now we know that the molecular mass = 32 and the mole is = 16.263.

Now we can find its mass by using this formula: <span>Mass in grams = Number of moles x Molecular mass of 1 mole.

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Mass in grams = 16.263 x 32 = 520g

**Answer:**

no

**Explanation:**

Small marble chips reacts faster

You have to make an assumption or estimation here: (don't think about the 1.00 M KSCN)

Since 1.00M KSCN provides a common ion source of SCN-. Therefore, you will have a <span>1.00 M SCN-.

</span><span>[Pb+2][SCN-] ~ 0.01 x 0.02^2 = 4E-6

</span> Pb(SCN)2 <---> Pb++ + 2SCN- <span>

</span>Bringing 1.00M SCN- back in the problem. 1.00M + 0.02M, ignoring the SCN-, and calculating the <span> [Pb+2]:

</span><span>

</span><span>Ksp = [Pb++][SCN-]^2

</span>2.00E-5 = [Pb++](1.00)^2

<span>[Pb++] = 2.00E-5 M </span>

<span>The mass balance shows that: </span>

<span>[Pb++] = [Pb(SCN)2] </span>

So [Pb(SCN)2] = 2.00E-5 M in 1.00 M KSCN.