Quantidade de Matéria - Formativo
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Medium
Karmel Beringui
Used 6+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a fórmula molecular do gás carbônico, molécula representada na figura ao lado?
CO
C2O
CO2
C2O2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a fórmula molecular do ácido clorídrico, representada na figura ao lado.
HCl
ClH
HCl2
H2Cl
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a fórmula molecular da amônia, representada na figura ao lado?
NH2
NH
NH3
H2N
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a fórmula molecular da Vitamina C (Ácido Ascórbico), representada da figura ao lado?
C4H8O5
C6H4O6
C2H5O3
C6H8O6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a massa molar da água (H2O)?
Dados: H - 1g, O - 16g
18g
17g
15g
12
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a massa molar da glicose (C6H12O6)?
Dados: C - 12g, H - 1g; O - 16g
176 g
180 g
190 g
150 g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a massa molar da nicotina (C₁₀H₁₄N₂)?
Dados: C - 12g, H - 1g , N - 14g
172 g
162 g
166 g
160 g
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um comprimido de Vitamina C possui 1 g de ácido ascórbico, sendo assim, uma caixinha de remédio contendo 12 comprimidos possui 0,07 mols de ácido ascórbico. Quantas moléculas de ácido ascórbico são encontradas nessa caixinha?
0,4 x 1023
0,5 x 1023
0,35 x 1023
0,55 x 1023
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