Explain the difference between a metal and a nonmetal WILL GET BRAINLIEST!!!!!
2 answers:
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Answer:
1.75M
Explanation:
The problem deals with finding the molarity of the given compound.
The compound is:
Na₂SO₄.10H₂O
Mass of the compound = 10.5kg = 10500g
Volume of the compound = 18.6L
Molarity is the number of moles of solute in a solution;
Molarity =
Number of moles =
Molar mass of Na₂SO₄.10H₂O = 2(23) + 32 + 4(16) + 10[2(1) + 16]
= 322g/mol
Now;
Number of moles = = 32.6mole
So;
Molarity = = 1.75M
Answer:
Kindly, see the attached image.
Explanation:
As clear in the attached image:
- It represents the cooling curve of water.
- It starts from 20°C, the water exists in the liquid phase.
- With time the temperature is decreased, reaching 0°C, the two phases (liquid and solid) are co-exist.
- Then, with further cooling and under 0°C reaching -20°C, all the water are exist in the solid phase (Ice).
<em>Kindly, see the attached image that clarify the cooling graph of water as it passes from 20°C to –20°C. </em>
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