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Knihovna

HON Law of Conservation of Mass QUIZ

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Poslední aktualizace 11 months ago
8 Dotazy
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Otázka 1
1.

The table lists some compounds found in foods and their formulas.

Based on this information, which of these statements is NOT true?

Otázka 2
2.

Match up the formulas with the correct

Přetahovatelná položkaarrow_right_altOdpovídající položka

NH4OH

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1 atom of oxygen and 6 atoms of hydrogen

Al2(CO3)3

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3 atoms of oxygen

(NH4)2SO4

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9 atoms of oxygen

Al2O3

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7 atoms of oxygen and 8 atoms of hydrogen

Cr2H8N2O7

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3 atoms of oxygen and 8 atoms of hydrogen

(NH4)2CO3

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1 atom of oxygen and 5 atoms of hydrogen

C2H6O

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4 atoms of oxygen and 8 atoms of hydrogen

Otázka 3
3.

In the chemical equation K + I --> KI, If K has a mass of 3.5 grams and I has a mass of 10.0 grams, how many grams of KI would be produced?

Otázka 4
4.

Magnesium + Oxygen gas ------> Magnesium Oxide + Oxygen

48.6 g + 50.0 g ------> 80.6 g + ___?___

What is the mass of the oxygen in the products?

Otázka 5
5.

How many atoms of each element are in the molecule below?

(NH4)2SO4

Otázka 6
6.

How many atoms of oxygen are on the reactant side of chemical reaction below?

CO + H2O → CO2 + H2

Otázka 7
7.

How many total atoms in 3CuSO4

Otázka 8
8.

What happens to the total mass of reactants in a chemical reaction?