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kolezko [41]
3 years ago
9

The element with the electron configuration 1s2 2s2 2p6 3s2 3p2 is

Chemistry
1 answer:
Butoxors [25]3 years ago
3 0
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Which of these statements is false?
AVprozaik [17]

Answer:

The answer is b

Explanation:

Hope it helps

8 0
3 years ago
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For two variables in a direct proportion, what is the result of doubling one variable?
Airida [17]

Answer:

the other variable is also doubled

Explanation:

direct proportion, same thing has to happen to both variables

6 0
3 years ago
What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?
Mama L [17]

Answer:

C:  \frac{6 mol}{2 L}

Explanation:

we can use the molarity equation

M = \frac{mol}{L}

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

\frac{6 mol}{2 L}

8 0
2 years ago
What sort of evidence would support at least one of the components of the
Yuki888 [10]

Answer:

(not sure) The origin of all cells observed can be traced to previous cells

Explanation:

- not all cells convert energy (?) (this I'm not sure but think so? might be wrong tho)

- not all cells have cell walls e.g. animal cells only have the cell membrane, no cell wall

- Rocks and other nonliving things are composed of cells: non living things are composed of the elements and not cells (unless they were previously alive, then they contain dead cells)

8 0
3 years ago
A solution is made by dissolving 10.7 g of magnesium sulfate, MgSO4, in enough water to make exactly 100 mL of solution. Calcula
adell [148]

Answer:

[MgSO₄] = 890 mM/L

Explanation:

In order to determine molarity we need to determine the moles of solute that are in 1L of solution.

Solute: MgSO₄ (10.7 g)

Solvent: water

Solution: 100 mL as volume. (100 mL . 1L / 1000mL) = 0.1L

We convert the solute's mass  to moles → 10.7 g / 120.36 g/mol = 0.089 moles

Molarity (mol/L) → 0.089 mol/0.1L = 0.89 M

In order to calculate M to mM/L, we make this conversion:

0.89 mol . 1000 mmoles/ 1 mol = 890 mmoles

4 0
3 years ago
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