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ArbitrLikvidat [17]
3 years ago
11

Study the diagram about the varying pressures of Earth’s Layers.

Chemistry
2 answers:
Schach [20]3 years ago
7 0

Answer:

A.) Outer Core

Explanation:

I just took the test

melomori [17]3 years ago
3 0

Answer:

A) Outer core

Explanation:

just took the test

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Type the correct answer in each box. In an atom, the first energy level can hold electrons. The second energy level can hold ele
Dimas [21]
1st energy level can hold 2 electrons
2nd energy level can hold 8 electrons
3rd energy level can hold 8 or 18 electrons
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3 years ago
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Um can someone just help me with the first question so I have an idea of what to do...please
Mice21 [21]

<em><u>look at the clues by it and try not to trust the links they trying to give u...</u></em>

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4 0
3 years ago
How many atoms are in 20.6 moles of curium
Harman [31]

Answer: 1.24 × 10^25

Explanation:

\frac{20.6 moles}{1} × \frac{6.022 * 10^{24} }{1 Mole}

Using our knowledge in unit conversions, we know the mole units cancel each other out and all there's left is the atom unit. From here we can multiply the fractions and eventually we end with the number 124.0532 × 10^23

According to the scientific notation rules, the number to the left of the decimal cannot exceed 10 so we have to move the decimal to the left two spaces. With this change, we also have to change the exponent of the 10. Because we moved the decimal point two spaces to the left, that means we have 10^25.

4 0
3 years ago
When 100. mL of 6.00 M HCl is diluted to 300. mL, the final concentration is ________.
Marat540 [252]

Answer:

2.00 M

Explanation:

The concentration of a solution is given by

M=\frac{m}{V}

where

m is the mass of solute

V is the volume of the solution

At the beginning, the solution has:

M = 6.00 M is the concentration

V = 100 mL = 0.1 L is the volume

So the mass of solute (HCl) is

m=MV=(6.00)(0.1)=0.6g

Then, the HCL is diluted into a solution with volume of

V = 300 mL = 0.3 L

Therefore, the final concentration is:

M=\frac{m}{V}=\frac{0.6}{0.3}=2.00 M

3 0
3 years ago
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The first task you are assigned in your summer laboratory job is to prepare a concentrated naoh stock solution. the molecular we
tensa zangetsu [6.8K]

240 g NaOH

<em>Step 1</em>. Calculate the moles of NaOH

Moles of NaOH = 0.750 L solution × (8 mol NaOH/1 L solution) = 6 mol NaOH

Step 2. Calculate the mass of NaOH

Mass of NaOH = 6 mol NaOH × (40 g NaOH/1 mol NaOH) = 240 g NaOH

7 0
3 years ago
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