Guestion 1 What is the value of Avogadros number? a) 12 b) 24 d) 6.02 x 10 -23 c) 6.02 x 10 23.

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Guestion 1 What is the value of Avogadros number? a) 12 b) 24 d) 6.02 x c) 6.02 x 10 23

Guestion 2 In the equation 2H 2 + O 2 2H 2 O how much oxygen is required to react with 2 mol of hydrogen? a) 1 mol b) 2 mol c) 4 mol d) 8 mol

Guestion 3 How many molecules of CO 2 are there in one mole of carbon dioxide? a) 1 b) 3 c) 6.02 x d) x 10 23

Вопрос 4 Масса 2 моль железа равна.. m(Fe) = 112 г

Вопрос 5 0,5 моль серной кислоты (H 2 SO 4 ) содержит число молекул, равное… N (H 2 SO 4 ) = 3,01 *10 23

Вопрос 6 2 моль газообразного аммиака (NH 3 ) занимают объем равный……… V(NH 3 ) = 44,8 л

Вопрос 7 Кислород массой 32 г соответствует количеству вещества…. n (O 2 ) = 1 моль

Вопрос 8 Масса 1,5 моль газообразного азота равна … m (N 2 ) = 42 г

Вопрос 9 11,2 л газообразного сероводорода (H 2 S) соответствуют количеству….. n ( H 2 S) = 0,5 моль

Вопрос 10 9,03* молекул водорода соответствует его массе, равной….. m (H 2 ) = 3 г