
Kiểm tra kiến thức cũ
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Để tính số mol chất dựa vào khối lượng chất và khối lượng mol chất ta dùng công thức:
A) n=m.M
B) n=m:M
C) n=M:m
D) n=m - M
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Số nguyên tử Oxygen có trong 0,05 mol khí Oxygen là:
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Khối lượng mol phân tử của Sodium hydroxide ( NaOH) là:
A) 57 (gam/mol)
B) 31 (gam/mol)
C) 23 (gam/mol)
D) 40 (gam/mol)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A) 0,5(mol)
B) 4(mol)
C) 2(mol)
D) 6(mol)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Thể tích của 0,5(mol) khí Nitrogen ở điều kiện chuẩn là:
A) 123,95(lít)
B) 12(lít)
C) 24,79(lít)
D) 12,395(lít)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Số mol của 1,3gam Kẽm (Zn) là:
A) 0,2 mol
B) 0,02 mol
C) 2 mol
D) 1 mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Khối lượng của 2 mol nước là:
A) 36 gam
B) 18 gam
C) 2 gam
D) 20 gam
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 8: Tỉ khối của khí Oxygen đối với khí Hydrogen là:
A) 9
B) 16
C) 18
D) 32
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