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
Related Questions
A sample of hydrated copper sulfate weighs 25g. After heating to remove the water of crystallization, the anhydrous copper sulfate weighs 16g. What is the percentage of water of crystallization in the original sample?
16%
25%
36%
56%
Which of the following postulates of Dalton's atomic theory explains the Law of Conservation of Mass?
Atoms of different elements have different masses.
Atoms are indivisible particles.
Atoms combine in simple whole number ratios to form compounds.
Atoms are neither created nor destroyed during a chemical reaction.
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
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.
Which of the following is not a disproportion atom reaction
Which law explains the observation that 1g of hydrogen always combines with 8g of oxygen to form 9g of water?
Law of Conservation of Mass
Law of Multiple Proportions
Law of Definite Proportions
Gay-Lussac's Law
When a solid vaporizes directly without melting, it is known as:
Evaporation
Sublimation
Sedimentation
Saponification
Which metal, among Mg, Cu, Ag, and Au, would effectively displace copper from a copper sulfate solution?
Mg
Cu
Ag
Au
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.
A sample of hydrated copper sulfate () weighs 25 g. Upon heating to drive off all the water, the anhydrous copper sulfate () remaining weighs 16 g. What is the value of 'x' (the number of water molecules of crystallization)?
2
3
5
7
