Question

If you have 200 grams of SO4, how many moles of SO4 will you have?

Question 5 options:

1.1 moles SO4

2.1 moles SO4


200 moles SO4


3.1 moles SO4

Answer 1

When you have 200 grams of SO4, considering the molar mass of SO4 as part of sulfuric acid (H2SO4), which is 96.06 g/mol, you would have approximately 2.08 moles of SO4. This calculation uses the molar mass only as a reference since SO4 doesn't occur freely without a counter ion.

Step-by-step explanation:

The moles of SO4 that you have when you possess 200 grams of SO4 can be determined by using the molar mass of sulfate (SO42-). However, sulfate is generally part of a compound such as sulfuric acid (H2SO4) or another sulfate salt. To find the number of moles, you would divide the mass of the sulfate by its molar mass. In this case, we don't have the molar mass for SO4 alone, as it does not exist freely without a counter ion. Instead, we could consider the molar mass of sulfuric acid, which for sulfate within H2SO4 would be 96.06 g/mol (32.06 for sulfur + 4*16.00 for oxygen).

Using this value as a reference for sulfate's part within H2SO4, the calculation would be as follows:

Number of moles = mass (g) / molar mass (g/mol)

Number of moles of SO4 2- = 200 g / 96.06 g/mol

This equals approximately 2.08 moles of SO4 (keeping in mind that we are using the molar mass from H2SO4 and not just the SO4 ion).

Answer 2

Yo sup??

weight of SO4=200gm

molar mass of SO4=96 gm

moles of SO4=200/96

=2.1 moles

Therefore the correct answer is option B

Hope this helps