Hydrogen and oxygen combine to form water (H2O). If 4g of hydrogen reacts completely with oxygen to form water, what mass of oxygen is required?
8g
16g
32g
64g
Related Questions
If two elements A and B combine in different ratios to form two compounds, and , then according to the Law of Multiple Proportions:
The ratio of masses of B which combine with a fixed mass of A is a simple whole number ratio.
The ratio of masses of A which combine with a fixed mass of B is a simple whole number ratio.
The ratio of masses of A which combine with a fixed mass of A is a simple whole number ratio.
The ratio of masses of B which combine with a fixed mass of B is a simple whole number ratio.
Hydrogen and oxygen combine to form water (H2O). If 4g of hydrogen reacts completely with oxygen to form water, what mass of oxygen is required?
8g
16g
32g
64g
When a solid vaporizes directly without melting, it is known as:
Evaporation
Sublimation
Sedimentation
Saponification
If two elements A and B combine in different ratios to form two compounds, the masses of B that combine with a fixed mass of A are in a small whole number ratio. This is a statement of:
Law of Conservation of Mass
Law of Definite Proportions
Law of Multiple Proportions
Avogadro's Law
Which of the following is not a disproportion atom reaction
A student places a piece of metal X into a solution of . No reaction is observed. The student then places a piece of metal X into a solution of . A reaction occurs, and a reddish-brown solid forms. Where would metal X most likely be placed in the reactivity series?
Above Zn
Below Cu
Between Zn and Cu
Above both Zn and Cu
In which of the following reactions does zinc metal undergo displacement?
Which of the following experiments definitively proved the Law of Conservation of Mass?
Dalton's atomic theory
Gay-Lussac's law of combining volumes
Lavoisier's experiments on heating mercury in a sealed container
Proust's law of definite proportions
Iron filings are added to a solution of copper sulfate. Which observation indicates a metal displacement reaction has occurred?
Gas bubbles are produced.
The temperature of the solution decreases.
The blue solution fades and a reddish-brown solid deposits.
The solution becomes more intensely blue.
Which law implies that the mass ratio of elements in a compound is always a whole number ratio?
Law of Multiple Proportions
Law of Conservation of Mass
Law of Definite Proportions
Avogadro's Law