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2 years ago

Which statement describes why the viscosity of water is lower than that of

Chemistry

2 answers:

kodGreya [7K]2 years ago

6 0

Answer:

Option B. The molecules that make up water can more easily slide past one another than the molecules that make up a olive oil.

andriy [413]2 years ago

6 0

Answer:

B. The molecules that make up water can more easily slide past one

another than the molecules that make up olive oil.

Explanation:

a p e x

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A solution of NaCl has a concentration of 1.50 M. The density of the solution is 1.06 g/mL. What is the concentration solution b

gavmur [86]

Answer:

The concentration solution by percent in mass is 8.28%

Explanation:

Molarity is moles of solute present in 1L of its solution .

Hence the formula is

$\left.\text {Molarity}=\frac{\text {moles of solute}}{\text {Volume of solution in } L} \text { (unit is } \frac{\text { mol }}{L} \text { or } M\right)=\frac{1.50 \mathrm{mol}}{1 \mathrm{L}}$

Let us convert the numerator and the denominator into mass in g

Numerator :

$mass $=$ moles $\times$ molar mass\\\\$=1.50 \mathrm{mol} \times 58.5 \frac{g}{\text { mol }}=87.75 \mathrm{g}$ (solute)$

Denominator :

$\begin{aligned} \text {mass} &=\text { density } \times \text {volume}=\frac{1.06 \mathrm{g}}{1 \mathrm{ml}} \times 1 \mathrm{L} \\\\ &=\frac{1.06 \mathrm{g}}{1 \mathrm{ml}} \times 1000 \mathrm{ml}=1060 \mathrm{g} \end{aligned}$

The formula to find mass percentage is

$\%$ mass $=\frac{\text { mass of solute }}{\text { mass of solution }} \times 100 \%$

$\%$ mass of $\mathrm{NaCl}=\frac{\text { mass of solute }}{\text { mass of solution }} \times 100 \%$

$$=\frac{87.75 g}{1060 g} \times 100 \%$\\$

=8.28% (Answer)

7 0

2 years ago

Read 2 more answers

Write all the laws of thermodynamics.

Rashid [163]

The laws of thermodynamics are: First law of thermodynamics: Energy can neither be created nor be destroyed, it can only be transferred from one form to another. Second law of thermodynamics: The entropy of any isolated system always increases.
Enthalpy In Thermodynamics: Thermal Energy Definition
What Is Planck's Constant: Entropy Definition Thermodynamics
Zeroth Law Of Thermodynamics Examples: Applications Of Newton's Laws Of Motion

7 0

1 year ago

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How many electrons are there in second principal energy level(n=2) of a phosphorus atom?

salantis [7]

Answer:

8 electrons

Explanation:

Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.

The electronic configuration of the element phosphorus is:-

$1s^22s^22p^63s^23p^3$

Thus, from the electronic configuration shown above,

In n = 2, the total number of electrons are 8 which are present in $2s^22p^6$

6 0

3 years ago

How large is the observable universe

Norma-Jean [14]

Here goes the question with no exact answer, lol <3

Scientists tell us that the observable universe is about 90 light years but then I wonder how they calculated that because the universe is immense!

I'm sorry but I can't go deeper into explaining as that's a tough question.

7 0

2 years ago

Why are scientific models important in the study of science? A. They are useful only for teaching students about science. B. The

madreJ [45]

The correct answer should be B.
The correct answer would be B.

4 0

3 years ago

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