Sara burns a candle. Candle wax (paraffin) has a chemical formula of C25H52. The combustion of the candle has the following equation: C25H52 + 38 O2 = 25 CO2 + 26 H2O

After a few minutes, Sara puts the lid on the candle, and the flame goes out. Sara weighs the candle before and after the experiment. She discovered she has burned 1.4 grans of paraffin. If the expirement actually profuced 2.1 grams of water, what was the percent yield of water for this experiment?

A. 116%
B: 2.8%
C: 133%
D: 2.1%

Simple stoichiometry, pls help im on edge

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

i think   the answer is c hope i'm right