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3 years ago

What do you think could happen with methane gas and CO 2

Chemistry

1 answer:

Molodets [167]3 years ago

5 0

Answer:

these gases accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life

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Competition occurs when

Katen [24]

Answer:

Competition occurs when (A) two or more organisms need the same resource.

Explanation:

I dont think it could be (B), (C) or (D) because those don't really make sense.

3 0

2 years ago

Which of the following do you expect to have soil with the highest fertility

Andrej [43]

It would help if I could see the specific answer choices, but an environment that would have lots of oxygen, water, decaying organisms and sunlight would be the answer (ex. the forest or riverbed)

7 0

3 years ago

A monoprotic weak acid when dissolved in water is 0.66% dissociated and produces a solution with a pH of 3.04. Calculate the Ka

raketka [301]

Answer:

Ka = 6.02x10⁻⁶

Explanation:

The equilibrium that takes place is:

HA ⇄ H⁺ + A⁻

Ka = [H⁺][A⁻]/[HA]

We calculate [H⁺] from the pH:

pH = -log[H⁺]

[H⁺] = $10^{-pH}$

[H⁺] = 9.12x10⁻⁴ M

Keep in mind that [H⁺]=[A⁻].

As for [HA], we know the acid is 0.66% dissociated, in other words:

[HA] * 0.66/100 = [H⁺]

We calculate [HA]:

[HA] = 0.138 M

Finally we calculate the Ka:

Ka = $\frac{[9.12x10^{-4}]*[9.12x10^{-4}]}{[0.138]}$ = 6.02x10⁻⁶

3 0

3 years ago

Which is a characteristic of most nonpolar compounds?

iVinArrow [24]

Nonpolar compound would be symmetrical

4 0

3 years ago

Read 2 more answers

In a polar covalent bond, the distribution of common electrons are

amid [387]

In a polar covalent bond, the distribution of common electrons are not shared evenly due to a greater positive charge from one atom's nucleus.Oct 30, 2016

3 0

3 years ago

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