A food Calorie (written with a capital C) equals which amount of energy?
- A1 joule
- B1 kilocalorie
- C1 kilojoule (1000 J)
- D1 calorie
A food Calorie (written with a capital C) equals which amount of energy?
Which group of biological molecules includes fats, oils and cholesterol?
Что такое моль в химии?
Water can act as an acid in some reactions and as a base in others. What is such a substance called?
What is the molar mass of sulfuric acid, H₂SO₄ (H = 1, S = 32, O = 16 g/mol)?
What is the mass of 0,5 mol of NaCl (molar mass 58,5 g/mol)?
How many grams of NaCl are in 250 mL of 0,9% (w/v) normal saline?
Using PV = nRT with R = 0,082 L·atm/(mol·K), how many moles of gas are in 24,6 L at 1 atm and 300 K?
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