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3 years ago

What is the reason for all these geological changes with the earth?

Chemistry

2 answers:

elixir [45]3 years ago

7 0

Almost all of the energy that affects the climate on the Earth originates from the Sun.

The energy emitted by the sun passes through space until it hits the Earth’s atmosphere.

Only about 40 per cent of the solar energy intercepted at the top of the atmosphere passes through to the Earth’s surface.

The rest is reflected or absorbed by the atmosphere. The energy output of the sun is not constant, it varies over time and it has an impact on our climate.

<span>Chang</span>

-Dominant- [34]3 years ago

6 0

<span>erosion, pollution, and wind.

</span>

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When the reaction h3po4(aq) ca(oh)2(aq)→ occurs what is the formula for the salt formed?

Georgia [21]

2H3PO4 + 3Ca(OH)2 ➡ Ca3(PO4)2 + 6H2O.

Hence salt formed is Ca3(PO4)2.
Hope this helps, have a nice day!

7 0

3 years ago

Read 2 more answers

Two objects of equal mass have a force of gravity of 6 N between them. Imagine the mass of one is cut in half and the other stay

Alenkasestr [34]

Answer:

F' = 3 N

Explanation:

Given that,

Two objects of equal mass have a force of gravity of 6 N between them.

If the mass of one is cut in half and the other stays the same such that,

m₁' = m₁ and m₂' = (m₂/2)

We need to find the new force. The gravitational force between two objects is given by :

$F=G\dfrac{m_1m_2}{r^2}$

We have, F = 6 N

New force,

$F'=G\dfrac{m_1'm_2'}{r^2}\\\\F'=\dfrac{Gm_1\times \dfrac{m_1}{2}}{r^2}\\\\=\dfrac{1}{2}\times \dfrac{Gm_1m_2}{r^2}\\\\F'=\dfrac{F}{2}\\\\F'=\dfrac{6}{2}\\\\F'=3\ N$

So, the new force becomes 3 N.

3 0

3 years ago

What is the volume of 5.8g of H2?

BartSMP [9]

At standard temperature and pressure, one mole of gas occupies 22.4 L. Knowing this, we must convert the grams to moles and moles to liters to get your answer. Here's how you do it!
$\frac{5.8gH2}{1} | \frac{1moleH2}{2.0gH2}| \frac{22.4LH2}{1moleH2} \\ \frac{5.8*1*22.4LH2}{2.0} \\ \frac{129.92LH2}{2.0} \\ 64.96LH2 \\ 65LH2$
With significant figures accounted for, 5.8 grams of hydrogen gas occupies 65 L.

Hope this helps!

4 0

4 years ago

What is the final pressure (expressed in atm) of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final

maksim [4K]

Hey there!:

V1 = 3.05 L

V2 = 3.00 L

P1 = 724 mmHg

P2 = to be calculated

T1 = 298 K

T2 = 273 K

Therefore: