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Jet001 [13]
3 years ago
5

What percentage of the atmosphere is oxygen?

Chemistry
1 answer:
lidiya [134]3 years ago
7 0

Answer:

21%

Explanation:

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

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Which of the following provides the most evidence for the theory of plate tectonics?
zhenek [66]

Answer:

i dunno

Explanation:

m xlaklXMLXL

5 0
3 years ago
How many ants would 6 giant anteaters need to eat in one year to get the matter and energy they need? Write a simple formula to
prohojiy [21]

Answer:

180,000 ants

Explanation:

For this problem we can create the following simple formula to solve this problem...

f(x) = 6x

where the variable x represents the number of ants that a single Anteater needs to eat per day. After a quick online search we can see that a single Anteater eats roughly 30,000 ants per day. If we use this value and plug it into the simple formula we can get the total number of ants 6 anteaters need to eat to survive.

f(x) = 6 * 30,000

f(x) = 180,000

7 0
3 years ago
What is ksp for agi, if its molar solubility is 9.1 × 10−9 mol/l?
LekaFEV [45]
When the salt AgI dissolves, it dissociates as follows;
AgI --> Ag⁺ + I⁻
molar solubility of salt is the amount of salt that can be dissolved in 1 L of solution
since the ions dissociated are in 1:1 molar ratio, the molar solubility of the ions are equivalent to the molar solubility of the salt.
ksp is the solubility product constant of the salt
ksp = [Ag⁺][I⁻]
ksp = (9.1 x 10⁻⁹ mol/L)²
ksp = 8.28 x 10⁻¹⁷
4 0
3 years ago
Construct a food chain (with at least 3 organisms) based on what you discovered in your owl pellet. Use your prior knowledge of
ozzi

Answer:

the tertiary animals the bigger animals that feed on smaller fish and crustaceans. These include predators like sharks, barracuda and tuna snapper. these fish that are commercially fished at unsustainable levels.

Explanation:

5 0
3 years ago
Read 2 more answers
Which option(s) correctly shows an anion? Select all that apply. ​
nata0808 [166]

Answer:

x

Explanation:

becaue neutron equal to mass num -atomic num

7 0
3 years ago
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