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3 years ago

Why does earth look blue from space

Chemistry

1 answer:

Julli [10]3 years ago

8 0

Answer:

Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals.

Explanation:

Earth is the only planet in our solar system that has a massive quantity of liquid water. About 74% of the surface of Earth is covered with the aid of liquid or frozen water. Because of this, people on occasion name it the blue planet. Because of its water, Earth is domestic to thousands and thousands of species of flora and animals.

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A certain solution is 70% ethanol and the rest being distilled water. If there are 12 moles of ethanol per litre of solution, fi

Aleks04 [339]

Answer:

$0.55284g/mL$

Explanation:

Hello there!

In this case, given the by-mass percent of ethanol:

$\frac{70gEt}{100gSol}$

It is possible to compute the density by using its molar mass to find the grams in one liter of solution:

$12\frac{molEt}{1L}*\frac{46.07 gEt}{1molEt}=552.85g/L$

However, by taking the g/mL we obtain:

$552.84\frac{g}{L} *\frac{1L}{1000mL}=0.55284g/mL$

Which is the density of the solution.

Best regards!

6 0

3 years ago

Is Calcium oxide (CaO) covalent or ionic?

Paul [167]

Answer:

Calcium oxide （CaO）is ionic.

6 0

3 years ago

Read 2 more answers

Liquid mercury can become gaseous mercury if enough energy is added. what is this change of state called?

podryga [215]

Its called D. evaporation

when mercury receives enough thermal energy that is converted into kinetic energy so high that it breaks the weak bonds holding the atoms together and causes them to become gaseous

hope that helps <span />

3 0

3 years ago

How did Altair begin

Vanyuwa [196]

Answer:

Altaïr is an ancestor (on the maternal side) of Desmond Miles, a modern-day assassin. He was trained in the Masyaf Castle in Syria by Al Mualim, his guardian since childhood.

Explanation:

3 0

3 years ago

A sample of gas has a volume of 135 ml at 0.600 atm. what would be the volume if the pressure is decreased to 0.200 atm while te

Orlov [11]

Answer: -

405 mL

Explanation: -

Initial Pressure P 1 = 0.6 atm

Final Pressure P 2 = 0.2 atm

Initial volume V 1 = 135 mL

Using Boyle's Law,

At constant temperature,

P 1 x V 1 = P 2 x V 2

0.6 atm x 135 mL = 0.2 atm x V 2

Final volume = V 2 = $\frac{0.6 atm x 135 mL}{0.2 atm}$

= 405 mL

Thus if a sample of gas has a volume of 135 ml at 0.600 atm. 405 mL would be the volume if the pressure is decreased to 0.200 atm while temperature is held constant.

5 0

3 years ago