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Kaylis [27]
3 years ago
15

Why doesn\'t oil dissolve in water? g oil molecules covalently bond together, forming droplets that separate from water?

Chemistry
1 answer:
dimaraw [331]3 years ago
7 0
<span>Oil is nonpolar and interacts with itself through van der Waals forces and is unable to interact with water. Water itself is held together by hydrogen bonds from polar interactions that prevent nonpolar species from interacting with it.</span>
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when a species must survive changes in the environment, would they want to use sexual or asexual reproduction. Explain
eduard
Sexual. First of all because any thing that is something like an animal can not participate in asexual reproduction. A species is a small population of a certain animal that can survive and produce fertile offspring
5 0
3 years ago
How many atoms of sodium are in 3.80 mol of sodium, Na?
vova2212 [387]

Answer:

2.29 × 10²⁴ atoms Na

Explanation:

Step 1: Define

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.

Step 2: Stoichiometry

3.80 \hspace{3} mol \hspace{3} Na(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} Na}{1 \hspace{3} mol \hspace{3} Na} ) = 2.2876 × 10²⁴ atoms Na

Step 3: Simplify

We have 3 sig figs.

2.2876 × 10²⁴ atoms Na ≈ 2.29 × 10²⁴ atoms Na

3 0
4 years ago
In water is the mass of one molecule equal to the mass of one molecule in steam
inna [77]

Answer:

The mass of one mole of water molecule = 18 ×N  

A  amu

Explanation: The mass of one mole of water molecule = Mass of one molecule ×N A Also mass of one mole of water is its molar mass in grams. So the mass of one mole of water is 18 g

​

3 0
3 years ago
Muiltplying 2.5 x 10^10 by 3.5 x 10^-7
andrey2020 [161]

<u>Answer: </u>

The value of \left(2.5 \times 10^{10}\right) \times\left(3.5 \times 10^{-7}\right) is 8750

<u>Solution: </u>

\left(2.5 \times 10^{10}\right) \times\left(3.5 \times 10^{-7}\right)

\Rightarrow\left(2.5 \times 10^{10} \times 3.5 \times 10^{-7}\right)

\Rightarrow\left(2.5 \times 3.5 \times\left(10^{10} \times 10^{-7}\right)\right)

\Rightarrow(2.5 \times 3.5) \times\left(10^{10+(-7)}\right)

\Rightarrow(2.5 \times 3.5) \times\left(10^{10+(-7)}\right)

\Rightarrow(2.5 \times 3.5) \times 10^{3}

\Rightarrow 8.75 \times 10^{3}

\Rightarrow 8.75 \times 1000=8750

6 0
3 years ago
Identify the polynomial.<br><br> x3- y3 + z<br><br> monomial<br><br> binomial<br><br> trinomial
Firdavs [7]

Answer: Option (c) is the correct answer.

Explanation:

A monomial is defined as an algebraic expression in which there is only one term present.

For example, 3x is a monomial.

A binomial is defined as an expression where there will be two terms present. For example, (x^{2} + y^{2}) is a binomial.

A polynomial is defined as an algebraic expression which contains more than two terms.

For example, x^{3} - y^{3} + z is a polynomial.

Thus, we can conclude that the given expression x^{3} - y^{3} + z is a polynomial.

6 0
3 years ago
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