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3 years ago

What is the densest layer of Earth

Chemistry

2 answers:

Vladimir [108]3 years ago

5 0

The mantle layer is more dense closest to the core.

Olin [163]3 years ago

3 0

I believe it's the mantle (about 2900 km thick)

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Why is an intensive property different from an extensive property

damaskus [11]

Answer:

check out this website,it might help.

Explanation:

https://courses.lumenlearning.com/boundless-chemistry/chapter/physical-and-chemical-properties-of-matter/

Im really not the smartest in the world.

<em><u>Website was not made by me, im just a lazy potat0.</u></em>

6 0

3 years ago

You are given a stock solution of 500.0 mL of 1.00M magnesium chloride solution. Calculate the volume of the stock solution you

alexgriva [62]

Answer:

$50\; \rm mL$ of the stock solution would be required.

Explanation:

Assume that a solution of volume $V$ contains a solute with a concentration of $c$ . The quantity $n$ of that solute in this solution would be:

$n = c \cdot V$ .

For the solution that needs to be prepared, $c = 0.20\; \rm M = 0.20\; \rm mol \cdot L^{-1}$ . The volume of this solution is $V = 250.0\; \rm mL$ . Calculate the quantity of the solute (magnesium chloride) in the required solution:

$\begin{aligned}n &= c \cdot V \\ &= 0.20\; \rm mol \cdot L^{-1} \times 250.0\; \rm mL \\ &= 0.20\; \rm mol \cdot L^{-1} \times 0.2500\; \rm L \\ &= 0.050\; \rm mol\end{aligned}$ .

Rearrange the equation $n = c \cdot V$ to find an expression of volume $V$ , given the concentration $c$ and quantity $n$ of the solute:

$\displaystyle V= \frac{n}{c}$ .

Concentration of the solute in the stock solution: $c(\text{stock}) = 1.00\; \rm M = 1.00\; \rm mol \cdot L^{-1}$ .

Quantity of the solute required: $n = 0.050\; \rm mol$ .

Calculate the volume of the stock solution that would contain the required $n = 0.050\; \rm mol$ of the magnesium chloride solute:

$\begin{aligned}& V(\text{stock}) \\ &= \frac{n}{c(\text{stock})} \\ &= \frac{0.050\; \rm mol}{1.00\; \rm mol \cdot L^{-1}} \\ &= 0.050\; \rm L \\ &= 50\; \rm mL\end{aligned}$ .

3 0

3 years ago

What is the main function of the right side of the heart

Butoxors [25]

The main function of the right side of your heart is to collect blood from the body and pump it to the lungs.

8 0

3 years ago

Read 2 more answers

Freezing point depression is:

CaHeK987 [17]

The answer to this question is D

5 0

4 years ago

A balloon filled with helium has a volume of 6.3 L. What is the mass, in grams, of helium in the balloon?

nikklg [1K]

Answer:

The mass of helium in the balloon is 1.125 grams

Explanation:

Step 1: Data given

Volume of helium = 6.3 L

Molar mass of helium = 4.0 g/mol

Step 2: Calculate moles helium

1 mol gas = 22.4 L

6.3 L = 0.28125 moles

Step 3: Calculate mass of helium

Mass = moles helium * molar mass helium

Mass = 0.28125 * 4.0 g/mol

Mass = 1.125 grams

The mass of helium in the balloon is 1.125 grams

7 0

3 years ago