Question

The percentages given in the
chart represent the number of
atoms of each element in a
compound. The chart correctly
represents the atoms in which of
these compounds? H-50%, O-
25%, C-25% ​

Answer 1

Answer:

the answer is HCO ok

mark me brilliant

Answer 2

Answer:

The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most succinct way of representing this elemental makeup. When a compound’s formula is unknown, measuring the mass of each of its constituent elements is often the first step in the process of determining the formula experimentally. The results of these measurements permit the calculation of the compound’s percent composition, defined as the percentage by mass of each element in the compound. For example, consider a gaseous compound composed solely of carbon and hydrogen. The percent composition of this compound could be represented as follows:

%

H

=

mass H

mass compound

×

100

%

%

C

=

mass C

mass compound

×

100

%

If analysis of a 10.0-g sample of this gas showed it to contain 2.5 g H and 7.5 g C, the percent composition would be calculated to be 25% H and 75% C:

%

H

=

2.5

g H

10.0

g compound

×

100

%

=

25

%

%

C

=

7.5

g C

10.0

g compound

×

100

%

=

75

%