1. a 36.0-gram sample of formaldehyde (ch20) contains 14.4 grams of carbon. how
many grams of carbon are in a 86.0-gram sample of this compound?
oa (36.0/14.4) x 86.0 grams
ob (14.4/36.0) x 86.0 grams
ec 14.4 grams
d (86.0/14.4) grams

14.4 / 36.0 ×  86.0  = 34.4 g

Explanation:

Given data:

Mass of carbon in 36 g of formaldehyde = 14.4 g

Mass of carbon in 86.0 g of formaldehyde = ?

Solution:

We will use cross multiplication to solve this problem.

14.4 / 36.0 = x/ 86.0

x = mass of carbon in 86.0 g of formaldehyde

14.4 / 36.0 = x/ 86.0

x = 14.4 / 36.0 ×  86.0

x = 34.4 g

h let me think

particle   p is an electron and particle q is a neutron