If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units.

"12th grade" is not a subject, and you have not said what the chemical reaction is.

To determine the amount of sulfuric acid produced from 20 grams of hydrochloric acid, we need to know the balanced chemical equation for the reaction between hydrochloric acid (HCl) and sulfuric acid (H2SO4).

HCl + H2SO4 -> H2O + H2SO4

From the equation, we can see that the reactants are hydrochloric acid (HCl) and sulfuric acid (H2SO4), and the products are water (H2O) and sulfuric acid (H2SO4).

Since sulfuric acid is one of the products, it means that it is not consumed in the reaction. Therefore, the amount of sulfuric acid produced will be equivalent to the amount of hydrochloric acid initially present.

Hence, if you start with 20 grams of hydrochloric acid, the number of grams of sulfuric acid produced will also be 20 grams (rounded to the nearest tenth).

To determine the grams of sulfuric acid produced, we need to balance the chemical equation for the reaction between hydrochloric acid (HCl) and sulfuric acid (H2SO4). The balanced equation is:

2HCl + H2SO4 → 2H2O + H2S

From the balanced equation, we can see that for every 2 moles of hydrochloric acid, we will produce 1 mole of sulfuric acid. To find the number of moles of hydrochloric acid, we'll need to know its molar mass. The molar mass of HCl is approximately 36.46 g/mol (1 g for hydrogen + 35.46 g for chlorine).

So, if we start with 20 grams of hydrochloric acid, we can calculate the number of moles using the formula:

Number of moles = Mass / Molar mass

Number of moles of HCl = 20 g / 36.46 g/mol ≈ 0.548 mol

Now, since the ratio between HCl and H2SO4 is 2:1, we can use the stoichiometry to find the number of moles of sulfuric acid produced:

Number of moles of H2SO4 = Number of moles of HCl / 2
Number of moles of H2SO4 = 0.548 mol / 2 ≈ 0.274 mol

Finally, we need to convert the moles of sulfuric acid back into grams. The molar mass of H2SO4 is approximately 98.09 g/mol (2 g for hydrogen + 32.07 g for sulfur + 4 g for oxygen). We can use the formula:

Mass = Number of moles * Molar mass

Mass = 0.274 mol * 98.09 g/mol ≈ 26.852 g

Therefore, approximately 26.9 grams of sulfuric acid will be produced when starting with 20 grams of hydrochloric acid.

I assume it must be

2HCl + S2 ---> H2S + Cl2

First, balance the equation (I already did it here)

Then you convert the 20 grams of HCl into that amount in moles.

Then you find out how many moles of sulfuric acid will be produced according to stoichiometry.

Then convert the amount of sulfuric acid produced in moles into grams. That's how much will be produced

And that's the procedure on how to do it. I didn't do the math for you because you need to learn how to do it for yourself. :)