Estequiometria
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Easy
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9 questions
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1.
OPEN ENDED QUESTION
3 mins • Ungraded
Cálcule la masa molar del compuesto NaCl. Masa molar de Na= 23 g/mol, Cl= 35 g/mol
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2.
MULTIPLE CHOICE QUESTION
2 mins • Ungraded
Balance la siguiente ecuación química: H2 + O2 --> H2O
2H2 + O2 --> 2H2O
2H2 + O2 --> H2O
H2 + 2O2 --> 2H2O
H2 + O2 --> 2H2O
3.
MULTIPLE CHOICE QUESTION
2 mins • Ungraded
Si para 1 mol de átomo tengo 22,4 L. ¿cuantos litros tendré para 2 moles?
10,8 L
12,4 L
40,8 L
44,8 L
4.
MULTIPLE CHOICE QUESTION
5 mins • Ungraded
Cálcule la masa molar de H2SO4 (ácido sulfúrico). (Masa molar de H= 1 g/mol ; S= 32 g/mol ; O= 16 g/mol)
R: 86 g/mol
R: 98 g/mol
R: 81 g/mol
R: 68 g/mol
5.
OPEN ENDED QUESTION
5 mins • Ungraded
Calcule cuántos moles hay en 15 g de Niquel (Ni). Peso molecular Ni= 59 g/mol. Formula a ocupar: moles =masa/pm
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6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuál es la masa molar o peso molecular del elemento Hierro (Fe)?
65 g/mol aprox.
45 g/mol aprox.
56 g/mol aprox.
50 g/mol aprox.
7.
OPEN ENDED QUESTION
5 mins • Ungraded
Calcule la masa en gramos de 5 moles de Calcio (Ca). (Peso molecular del Ca= 40 g/mol). Formula a ocupar: masa= moles x peso molecular
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