Which expression gives the mass percent of carbon in methanoic (formic) acid, hcooh? 12/46 x 10012/29 x 10016/46 x 1002/46 x 100

Explanation:

Molecular mass of methanoic acid (HCOOH) = 2*1 + 1*12 + 2*16

                                                                              =46 grams

mass of 1 mole of hydrogen atom = 1  g

mass of 1 mole carbon atom = 12 g

mass of 1 mole of oxygen atom = 16 g

mass of 1 mole of HCOOH = 46 g

1 mole of HCOOH molecule contains 1 mole of carbon atoms

means in 46 g of HCOOH there is 12 g of carbon atoms.

Percentage of carbon in methanoic acid =

a basic solution is an aqueous solution containing more oh-ions than h+ions. in other words, it is an aqueous solution with a ph greater than 7. basic solutions contain ions, conduct electricity, turn red litmus paper blue, and feel slippery to the touch.

explanation:

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.