# Question #ef574

##### 2 Answers

#### Answer:

41.6 g

#### Explanation:

At first you need to have the whole balanced equation:

It is a neutralisation reaction and those have regular mechanism.

First we need to know how many moles of

For this we can use cross-multiplication

From the reaction we've written before we can see that 2 moles of

So we use the cross multiplication

2 moles

0.850 moles

Now that we have number of moles, we just need the molar mass (equation:

After rearranging the equation:

If anything is unclear, feel free to ask :)

#### Answer:

#### Explanation:

First write down the reaction in full:

We won't need the equation, but it is clearer if you do so.

Notice how the moles of sulfuric acid and sodium hydroxide are in the ratio

Cross-multiplying:

The formula for moles is

Rearranging to solve for

Since we have

We can input our values into the rearranged equation: