
Cálculo Químico 1
Chemistry
11th Grade
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
O número que indica quantas vezes a massa atônica de um elemento é maior que 1u, é definição para:
Núemo de
Avogadro
Massa
Atômica
Átomo
Grama
Massa
Molecular
2.
MATCH QUESTION
1 min • 5 pts
Dadas nas massa atômicas de H=1,Al=27, O=16, C=12 e S=32, podemos dizer que as Massas moleculars dos elementos mencionados abaixo são:
C6H12O6
78g
H2SO4
98g
Al(OH)3
180g
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Quantas moléculas são encontradas em 880g de CO2?
Dados: C=12 e O=16.
X=1,204x1025
moléculas de CO2
X=120,4x1025
moléculas de CO2
X=1,204x1023
moléculas de CO2
X=1204x1035
moléculas de CO2
4.
MATCH QUESTION
3 mins • 5 pts
Relacione os valor para as questões abaixo:
Qual a massa de um átomo de Cálcio ? ( Ca=40g )
X=161,925g de Cu
Qual a massa de 0,5 mol de H2SO4?
(Dados:H=1, O=16 e S=32 )
X=49gde H2SO4
Quantos gramas de Cobre estão contidos em 2,55 mol de cobre ? ( Cu=63,5g )
X=6,64x10-23g
5.
DROPDOWN QUESTION
1 min • 5 pts
Indicar quantas vezes a massa de uma molécula e maior que 1u, define: (a)
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Defina, massa de um mol de átomos:
É a massa atômica expressa em gramas
É a massa molecular expressa em gramas
É a massa molecular expressa em toneladas
É a massa atômica expressa em metros
7.
DRAG AND DROP QUESTION
1 min • 5 pts
Determinar o número de elétrons que o elementos possui fica a cargo do: (a)
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