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3 years ago

Greenland ice sheets

1 answer:

8 0

<span>The Greenland ice sheet is a vast body of ice covering 1,710,000 square kilometers, roughly 80% of the surface of Greenland. It is the second largest ice body in the world, after the Antarctic ice sheet.</span><span />

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What is the outcome of all chemical changes when two substances are combined?

solmaris [256]

Answer:

This is called a chemical reaction. gas may form.heat may be produced and the color may change

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4 years ago

A gas at 89C occupies a volume of 0.67 L. At least what temperature will the volume increase to 1.12 L

dybincka [34]

At temperature 332.13 °C

<h3>Further explanation</h3>

Charles's Law stated that :

When the gas pressure is kept constant, the gas volume is proportional to the temperature

$\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

T₁ = 89 °C=89+273=362 K

V₁ = 0.67 L

V₂ = 1.12 L

$\tt T_2=\dfrac{V_2.T_1}{V_1}\\\\T_2=\dfrac{1.12\times 362}{0.67}=605.13~K=332.13~^oC$

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3 years ago

Radio station broadcast signals two different frequency bands. These are Called ?

rusak2 [61]

Answer:

I think it is AM and frequency

Explanation:

Sorry if i'm wrong ;)

6 0

3 years ago

Read 2 more answers

What is the charge on an atom after it gains two electrons during the formation of a bond?

scoundrel [369]

Answer:

negative or neutral

Explanation:

electrons have a negative charge

the atom can be balanced by the negative charge if it was at two protons before

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4 years ago

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2. Ultraviolet radiation has a frequency of 6.8 x 10'5Hz. Calculate the energy, in

Gnoma [55]

Answer:

$E=4.5\times 10^{-18}\ J$

Explanation:

It is given that, the frequency of Ultraviolet radiation is $6.8\times 10^{15}\ Hz$

We need to find the energy of the photon. The formula for the energy of a photon is given by :

$E=hf\\\\\text{Where h is Planck's constant}\\\\E=6.63\times 10^{-34}\times 6.8\times 10^{15}\\\\E=4.5\times 10^{-18}\ J$

So, the energy of the photon is $4.5\times 10^{-18}\ J$ .

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3 years ago