What does the rate of a reaction measure?
- AHow hot the reaction gets
- BHow much product forms in total by the end
- CHow much energy the final products contain
- DHow quickly reactants are used up or products are formed
What does the rate of a reaction measure?
What is the SI base unit of mass?
Which type of radiation is the most penetrating?
What is the molar mass of calcium carbonate, CaCO₃ (Ca = 40, C = 12, O = 16 g/mol)?
A radioactive isotope has a half-life of 5 days. A sample starts with 80 g. How much is left after 10 days?
A bag of 5% (w/v) glucose solution (called 5% dextrose in the US) contains 5 g of glucose per 100 mL. How many grams of glucose are in 1 L?
Orange bromine water is shaken with two hydrocarbons. With hexene it turns colourless; with hexane it stays orange. What does this show?
Чому вода має незвично високу температуру кипіння для такої малої молекули?
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