Answer:
The answer to your question is
1.- 1.686 x 10²⁴ atoms
2.- 0.25 moles
Explanation:
1.-
1 mol ---------------- 6.023 x 10²³ atoms
2.8 moles ---------- x
x = (2.8 x 6.023 x 10²³) / 1
x = 1.686 x 10²⁴ atoms
2.- 1 mol ------------------ 6.023 x 10 ²³ molecules
x moles ------------- 1.50 x 10²³ molecules
x = (1.50 x 10²³ x 1) / 6.023 x 10²³
x = 0.25 moles
Explanation:
1 sugar solution =Distillation
2 Iron powder and sand=magnetic separation
3 petrol and diesel= Fractional distillation
4 Camphor and glass powder = Sublimation
-3 - 3(-2) = +3
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In the periodic table, there are seven horizontal rows of elements called periods.
The temperature that water boils on the fahrenheit scale is c. 212°f.
<h3>What is Temperature conversation?</h3>
Temperature conversation is a way of converting a temperature from a unit to another using conversation scale.
Therefore, on fahrenheit scale water boils at 212°f which is equivalent to 100°C on the Celcius scale.
Learn more about Temperature conversation at;brainly.com/question/23419049
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