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4 years ago

Which statement best compares Mercury and Earth?

2 answers:

8 0

A is right because earth does have a atmosphere full of oxygen and thats how we breth in and out plus mercury is very hot and does have a small atmosphere

IrinaVladis [17]4 years ago

3 0

Answer:

A. Mercury has very little atmosphere, but Earth has an atmosphere consisting of oxygen.

Explanation:

Mercury does not have any moon while the Earth has one. Mercury does not have liquid water while 70% of the Earth is covered with water. Mercury has extreme variations of temperature due its close proximity to the Sun. The dark side has extremely low temperature while the lit has has extremely high temperature. The Earth has moderate temperature of about 14 degrees which sustains life.

Mercury has extremely weak atmosphere; probably its has captured some solar wind particles. It comprises of helium, hydrogen, calcium, oxygen etc. Earth has thick atmosphere primarily composed of Nitrogen and Oxygen.

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Calculate the molarity of the two solutions.

daser333 [38]

1. 0.33 M

2. 0.278 M

<h3>Further explanation</h3>

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}$

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

1. 0.350 mol of NaOH in 1.05 L of solution.

n=0.35

V=1.05 L

Molarity :

$\tt M=\dfrac{0.35}{1.05}=0.33$

2. 14.3 g of NaCl in 879 mL of solution.

mol NaCl(MW=58.5 g/mol) :

$\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{14.3~g}{58.5~g/mol}=0.244$

Molarity :

$\tt M=\dfrac{0.244}{0.879~L}\\\\M=0.278$

4 0

3 years ago

In a given substance, as the temperature of a substance increases, the volume of that substance

steposvetlana [31]

C. Increases. Increasing temperature=Increasing Volume

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3 years ago

What noble gas has the same electron configuration as the oxide ion?

Tems11 [23]

I love these type of questions :)

Final Answer: Neon

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Setler79 [48]

Hot liquid rock comes in contact with Earth´s cold crust

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C.
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4 years ago

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