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2 years ago

Which climate conditions are typical of regions near the North Pole and the South Pole

1 answer:

6 0

<span>The main feature of the climate is that there are not such things as warm summers there and that the temperature almost never exceeding 10-20 degrees celsius in the summer. In the winter it goes as much as -50 celsius. There are no trees while the land comprises glaciers and tundras. The two climates are the coldest places on earth. </span>

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What is Avagrados Number?

dsp73

6.02x10^23; This represents the number of molecules in 1 mole of a substance.

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3 years ago

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The public is not yet able to ourchase cars powered by hydrogen fuel cells because engineers have to determine how the cars perf

disa [49]

Answer:

in real-world conditions

Explanation:

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2 years ago

The number of electrons in n=1 and n=2 shells of aluminum are

harina [27]

Answer:

n=1 holds two electrons and n=2 holds eight electrons.

Explanation:

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In this case, since the atomic number of aluminum is 13, its electron configuration is:

$Al^{13}: 1s^2,2s^2,2p^6,3s^2,3p^1$

In such a way, we can see that the level n=1 is filled with two electrons since the subshell s is able to hold two electrons and the level n=2 is also filled but with eight electrons as s holds two whereas p holds 6. Moreover, n=3 is holding three electrons.

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2 years ago

Which option explains how purple pigments make some flower petals purple?

raketka [301]

Many of the actual chemicals in flower petals that give them their different colors are called anthocyanins. These are water-soluble compounds that belong to a bigger class of chemicals known as flavonoids. Anthocyanins are responsible for creating the colors blue, red, pink, and purple in flowers.

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2 years ago

Calculate the equilibrium constant for the decomposition of water 2h2o(l)  2h2(g) + o2(g) at 25°c, given that g°f (h2o(l)) = –

kow [346]

Answer:

2.6 ×10^-42

Explanation:

From

∆G= -RTlnK

∆G= -237.2 KJmol-1 or -237.2×10^3 Jmol-1

R= 8.314 Jmol-1K-1

T= 25°C + 273= 298K

-237.2×10^3= 8.314 × 298 × ln K

ln K= -237.2×10^3/2477.572

K = 2.6 ×10^-42

3 0

3 years ago