Question 7 11 The density of an unknown gas is 3.24 g/L at 28 degrees Celsius and 1.00 atm. Find the molar mass of the gas. Hint: (n = grams/grams per mole), (density = mass/volume) (Molar Mass = grams/mole) 0 45.5 g/mol 80.1 g/mol 7.45 g/mol 086.3 g/mol Question 8 1 pts

80.0 g/mol.

Explanation:

The volume of a mole of gas at 28 degrees C and 1 atm = 301/273 * 22.4

= 24.7 litres.

So the molar mass = 24.7 * 3.24

= 80.0 g/mol.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.