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Shkiper50 [21]
3 years ago
6

Together oxygen and nitrogen comprise what percentage of the atmosphere

Chemistry
1 answer:
Charra [1.4K]3 years ago
5 0
Oxygen is 21% and nitrogen is 78% so combined is 99%
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PLEASE HELP!!!!! I need help with this question!
Ivahew [28]

Answer:

Exothermic Reaction

Explanation:

Its a combustion reaction and they are always exothermic in nature.

8 0
2 years ago
What type(s) of intermolecular forces exist between two molecules of hexane? (BLB Ch. 11)
kati45 [8]

Answer:

induced dipole-dipole forces or London Dispersion forces / van der Waals forces.

Explanation:

Hexane is non-polar in nature. This is due to :

The bond in the molecule is C-H, which is non-polar in nature because the carbon and the hydrogen having very similar electronegativity values.

Hexane is also symmetric.

The intermolecular force acting in the molecule of the hexane are induced the dipole-dipole forces or London Dispersion forces / van der Waals forces.

7 0
3 years ago
Which SI unit indicates the mass on an average-sized box of breakfast cereal?
marin [14]
Well, i checked my cereal box and it says "net wait g (500)" so it's probably Grams

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3 0
3 years ago
PLEASE HELP
dalvyx [7]

It has a -1 charge, so it would gain one!

5 0
3 years ago
Read 2 more answers
A certain ore is 26.9% nickel by mass. How many kilograms of this ore would you need to dig up to have 50.0 g of nickel?
horsena [70]
The answer is 185.87g to 2 decimal places.
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2 years ago
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