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1. d. Water is able to dissolve non-polar gases like oxygen and carbon dioxide.
2. d. -4.8 degree Celsius
3. a. Each solution has the same number of relative particles of solute per kilogram of solvent.
- Atomic weight of copper = 63.5 g
- 1 mole of copper contains = 63.5g = 6.023 × 10²³ atoms of copper
- 1 g of copper contains
= 9.4 × 10²¹ atoms- Therefore, 3.11g of copper contains

- = 29.234 × 10²¹ atoms
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
Lactic acidosis occurs when there is greater than 1.60 g in 4445 mL of blood
Explanation:
A normal blood lactic acid level is 0.5-1 mmol/L.
Mild to moderately elevated level of blood lactic acid known as hyperlactatemia occur when the range is between 2-4 mmol/L without metabolic acidosis.
Lactic acidosis occurs with blood lactic acid levels of > 4 mmol/L
Molar mass Lactic acid, C₃H₆O₃ = 90 g/mol
Mass 4 mmol lactic acid = 0.004 mol * 90 g/mol = 0.36 g
Mass of lactic acid in 1 litre or 1000 mL of blood = 0.36 g
Mass of lactic acid in 4445 mL of blood = 0.36 g * (4445/1000)
<em>Mass of lactic acid in 4445 mL of blood = 1.60 g</em>