hóa 8
2nd Grade
•20 Qs
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hóa 8
Quiz
•
Chemistry
•
2nd Grade
•
Medium
Phuong Nguyen
Used 3+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Tính lượng chất có trong 4g C; 6,4g S; 11,5g Na; 42g Fe?
A. 0,33mol C; 0,2mol S; 0,196mol Na; 0,75mol Fe
B. 0,33mol C; 0,2mol S; 0,5mol Na; 0,75mol Fe
C. 0,33mol C; 0,2mol S; 0,196mol Na; 0,65mol Fe
D. 0,33mol C; 0,3mol S; 0,196mol Na; 0,75mol Fe
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Tính khối lượng của 0,25 mol nước?
A. 18 g.
B. 4,5 g.
C. 9 g.
D. 4,25 g.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Tính khối lượng của 0,35 mol muối đồng sunfat. Biết rằng công thức hóa học của muối đồng sunfat là CuSO4?
A. 160 g.
B. 80 g.
C. 56 g.
D. 44,8 g.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A. 1 mol.
B. 0,56 mol.
C. 0,5 mol.
D. 1,27 mol.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Hãy tính số mol chất có trong 15g CaCO3, 9,125g HCl, 100g CuO?
A. 0,35 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
B. 0,15 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
C. 0,15 mol CaCO3; 0,75 mol HCl; 1,25 mol CuO.
D. 0,25 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Tính khối lượng của những lượng chất sau: 0,1mol S, 0,25 mol C, 0,6 mol Mg, 0,3 mol Fe?
A. 1,6g S; 2,4g C; 12,0g Mg; 5,6g Fe.
B. 1,6g S; 3,0g C; 12,0g Mg; 5,6g Fe.
C. 3,2g S; 2,4g C; 14,4g Mg; 16,8g Fe.
D. 3,2g S; 3,0g C; 14,4g Mg; 16,8g Fe.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Tính số mol mỗi chất có trong 15g CaCO3, 9,125g HCl, 100g CuO?
A. 0,25 mol CaCO3; 0,75 mol HCl; 1,25 mol CuO.
B. 0,15 mol CaCO3; 0,25 mol HCl; 1,25 mol CuO.
C. 0,15 mol CaCO3; 0,75 mol HCl; 1,2 mol CuO.
D. 0,25 mol CaCO3; 0,25 mol HCl; 1,2 mol CuO.
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