Answer:
The mass of xenon in the compound is 2.950 grams
Explanation:
Step 1: Data given
Mass of XeF4 = 4.658 grams
Molar mass of XeF4 = 207.28 g/mol
Step 2: Calculate moles of XeF4
Moles XeF4 = mass XeF4 / molar mass XeF4
Moles XeF4 = 4.658 grams / 207.28 g/mol
Moles XeF4 = 0.02247 moles
Step 3: Calculate moles of xenon
XeF4 → Xe + 4F-
For 1 mol xenon tetrafluoride, we have 1 mol of xenon
For 0.02247 moles XeF4 we have 0.02247 moles Xe
Step 4: Calculate mass of xenon
Mass xenon = moles xenon * molar mass xenon
Mass xenon = 0.02247 moles * 131.29 g/mol
Mass xenon = 2.950 grams
The mass of xenon in the compound is 2.950 grams
Answer:the number of moles represented by 3.0 x 10^24 atoms of Ag is 0.500mol 0.500 m o l .
Explanation:
A material that will oxidized when exposed to oxygen and water is an iron shovel
Answer:
35 grams of oxygen
Explanation:
The law of constant proportion or composition states that the elements that combine to form a chemical compound combine in fixed whole number ratios.
Therefore, the ratio of the that make up any pure sample of a given compound are present in the same mass ratio
The given parameters are;
The mass of oxygen that reacts completely with 100 grams of copper, (cu) = 25.0 grams
Therefore;
1 gram of copper completely reacts with 25/100 = 1/4 grams of oxygen
140 grams of copper will completely react with 140 × 1/4 = 35 grams of oxygen
∴ 35 grams of oxygen will completely react with 140grams of copper.
