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Serga [27]
4 years ago
6

Why do we need to study chemistry?

Chemistry
1 answer:
Georgia [21]4 years ago
3 0

Chemistry is very important to study. Chemistry explains the natural world around us and also explains certain chemical processes that happen here on earth.

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nadezda [96]

Answer:

It's answer is pure substances

6 0
3 years ago
What is the osmolarity of .00001 grams (0.1 mg%) of ethanol (does not dissociate) in one liter?
MrMuchimi

Explanation:

As it is known that non-electrolytes do not dissociate. Therefore, molarity of such a solution is equal to the osmolarity of solution.

As, molar mass of ethanol = 46.07 g/mol

Therefore, no. of moles of ethanol will be calculated as follows.

               No. of moles = \frac{mass}{\text{molar mass}}

                                     = \frac{0.00001 g}{46.07 g/mol}

                                     = 2.17 \times 10^{-7} mol

As, molarity is moles of solute in liter of solution. Hence, molarity of ethanol is as follows.

                           Molarity = \frac{\text{no. of moles}}{volume}

                                          = \frac{2.17 \times 10^{-7} mol}{1 L}

                                          = 2.17 \times 10^{-7} mol/L

Since, for the given solution Molarity = osmolarity

Thus, we can conclude that osmolarity of .00001 grams (0.1 mg%) of ethanol  in 1 L is 2.17 \times 10^{-7} osmol/L.

8 0
3 years ago
Solve these Please. (15 points)
Ghella [55]

Answer:

1) 4Fe + 3O2 → 2Fe2O3

2) H2 + Cl2 → 2HCl

3) 2Ag + H2S → Ag2S + H2

4) CH4 + 2O2 → CO2 + 2H2O

5) 2HgO → 2Hg + O2

6) 2Co + 3H2O → Co2O3 + 3H2

3 0
3 years ago
What is The maximum amount of a substance that can be dissolved by another substance
Oksanka [162]

Solubility varies vastly. It depends on the solute, solvent, temperature, and pressure.

6 0
3 years ago
I need help with that question please ASAP
storchak [24]
The answer is the effort because that's where you would push to raise the object
7 0
3 years ago
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