Answer:
c. nitrogen gas
Explanation:
Our air is a homogeneous mixture of many different gases and therefore qualifies as a solution. Approximately 78% of the atmosphere is nitrogen, making it the solvent for this solution.
Answer: ??????????????????? huh
Explanation:
5.5/-38 / 5.5 = 1/-6.9 x 1.3 = 1.3/-8.98
unit volume/temperature x searching amount
i’d say the temperature would be -8.98 C simply - I don’t know what formula youd use for this
Explanation:
Molecular mass of sugar =
: = 432 g/mol
Atomic mass of carbon atom = 12 g/mol
Atomic mass of hydrogen atom = 1 g/mol
Atomic mass of oxygen atom = 16 g/mol
a) Percentage of an element in a compound:

Percentage of carbon by weight in
:

Percentage of hydrogen by weight in
:

Percentage of oxygen by weight in
:

b) Percentage of mole each of the elements present in sugar:
=
In mole of sugar we have 12 moles of carbon atom , 22 moles of hydrogen atoms and 11 moles of oxygen atoms.
Percentage of carbon by mole in
:

Percentage of hydrogen by mole in
:

Percentage of oxygen by mole in
:
