Nitrogen dioxide and water react to produce nitric acid, hno3, and nitrogen oxide.

3no2 + h2o --> 2hno3 + no

how many grams of no are produced from 15.8 g of h2o?

26.3 grams of NO are produced

Explanation:

3NO₂ + H₂O → 2HNO₃ + NO

In this reaction 1 mol of water is needed to produce 1 mol of NO

Ratio is 1:1

15.8 g / 18 g = 0.877 mol of water

0.877 mol of water will produce 0.877 mol of NO

Molar mass NO = 30 g/m

0.877 moles . 30 g/m = 26.3 g

26.33g of NO will be produced

Explanation:

3NO2 + H2O --> 2HNO3 + NO

RMM of NO = 14 +16 =30g/mol

RMM of H2O = (2x1) + 16 = 2 +16 = 18g/mol

From the equation,

18g of H2O produced 30g of NO.

Therefore, 15.8g of H2O will produce Xg of NO i.e

Xg = (15.8 x 30)/18 = 26.33g

15.8g of H2O will produce 26.33g of NO.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !