MASSA MOLECULAR
Quiz
•
Chemistry
•
1st - 8th Grade
•
Practice Problem
•
Hard
Fernando Santana
Used 53+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A massa molecular do H3PO4 e:
Dados: H=1u; P=31u; O=16u
92u
94u
96u
98u
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A massa molecular do composto acima é:
Dados C=12u, H=1u; O=16u
162u
182u
98u
180u
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se a massa do cobre é 63u, então é correto afirmar que:
Sua massa é 63 vezes maior que a do carbono
Que um átomo de cobre pesa 63g
Um átomo de cobre pesa 63 vezes mais que 1/12 do carbono
Que sua massa é duas vezes maior que a massa do enxofre
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A porcentagem em massa de carbono em uma molécula de C2H2 é aproximadamente igual a:
Dados C=12u, H=1u
30%
92%
26%
52%
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A massa molecular de uma molécula de BaCl2.10H2O é:
Dados: Ba=136u, Cl=35,5u , H=1u. O=16u
387u
207u
201u
378u
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O inseticida Parathion tem a seguinte fórmula molecular: C10H14O5NSP. Assinale a alternativa que indica a massa molecular desse inseticida: Dados: H = 1 u.; C = 12 u.; N = 14 u.; O = 16 u.; P = 31 u.; S = 32u
53u
106u
152u
260u
291u
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qual a fórmula molecular do hidrocarboneto que possui 1/6 em massa de hidrogênio na sua composição?
C4H8
C4H10
C4H8O
C5H12
C6H6
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