Use the problem below to answer the question: how many grams of h2 would be formed if 34 grams of carbon reacted with an unlimited amount of h2o? the reaction is c + h2o → co + h2 what substance are we expected to solve for?

Answer : The mass of hydrogen gas will be, 5.6 grams.

Explanation : Given,

Mass of C = 34 g

Molar mass of C = 12 g/mole

Molar mass of = 2 g/mole

First we have to calculate the moles of carbon (C).

Now we have to calculate the moles of .

The balanced chemical reaction is,

From the balanced reaction we conclude that

As, 1 mole of react to give 1 mole of

So, 2.8 moles of react to give 2.8 moles of

Now we have to calculate the mass of .

Therefore, the mass of hydrogen gas will be, 5.6 grams.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6