Iam horrible at chemistry, can somebody me out with this question .
carbonic acid (h2co3) forms when carbon dioxide (co2) dissolves in water according to this equation:

co2 + h2o→h2co3

how many moles of co2 must dissolve in an excess of water to produce 4 moles of h2co3 ?
a. 1 mol
b. 2 mol
c. 3 mol
d. 4 mol

There must dissolve 4 moles of CO2 (Option D is correct)

Explanation:

Step 1: Data given

Number of moles H2CO3 produced = 4 moles

Step 2: The balanced equation

CO2 + H2O → H2CO3

Step 3: Calculate moles of CO2

For 1 mol of CO2 we need 1 mol of H2O to produce 1 mol of H2CO3

For 4 moles H2CO3 produced we need 4 moles of CO2.

There must dissolve 4 moles of CO2 (Option D is correct)

chemistry sucks a**

explanation: