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strojnjashka [21]
3 years ago
11

Clouds form because water vapor in the air...

Chemistry
2 answers:
lisov135 [29]3 years ago
7 0

the answer is D. The rain cycle says that Evaporation turns water into gas

DIA [1.3K]3 years ago
6 0
The answer is C. condenses
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Quartz is the type of mineral used for both mechanical and chemical weathering
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Select the correct answer. Thomas has 235 grams of K2S in the chemistry lab. How many atoms of potassium (K) are in 235 grams of
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Atoms are the smallest division of the element. The potassium atoms present in the 235 gm of the compound is 2.57 \times 10^{24} atoms.

<h3>What is the number of atoms?</h3>

Given,

  • Mass (m) of Potassium sulfide (\rm K_{2}S) = 235 gm
  • Molar mass (M) of  Potassium sulfide = 110.26 g/mol

Calculate the number of moles as:

\begin{aligned}\rm Moles (n) &= \dfrac{\rm mass}{\rm molar\;\rm mass}\\\\&= \dfrac{235}{110.26}\\\\&=2.13\;\rm mol\end{aligned}

In the given compound \rm K_{2}S, there are two atoms of potassium and one atom of sulphur.

If, 1 mole = 2 \times 6.022 \times 10^{23} atoms of potassium

Then, 2.13 moles = X atoms

Solving for X:

2.13 \times 2 \times 6.022 \times 10^{23} = 2.57 \times 10^{24}

Therefore, option c. 2.57 \times 10^{24} is correct.

Learn more about atoms here:

brainly.com/question/11411852

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3 years ago
Every morning, Sarah prepares the same amount of coffee at the same temperature. Identify the coffee solution with the highest c
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So if you are trying to find the coffee with the highest concentration of sugar, the cup that has the highest concentration of sugar is the cup that Sarah made on Thursday.

Since there were sugar molecules remaining at the bottom of her coffee cup, that means that the coffee solution was completely saturated with sugar - no more sugar was able to dissolve in the coffee.

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Explanation:

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b) The chemical reaction above limits the number of molecules of P2O3 produced for every 4 atoms of P.

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