0
Still curious? Ask our experts.
Chat with our AI personalities
Professor
Fran
RafaThe molecular formula for potassium dichromate is K2Cr2O7. The percentage of oxygen in potassium dichromate is calculated as follows:
Molecular weight of oxygen: 16 g/mol
Molecular weight of K2Cr2O7: 294 g/mol
Percentage of oxygen in K2Cr2O7: (16 g/mol / 294 g/mol) * 100% = 5.44%
Therefore, oxygen constitutes approximately 5.44% of the compound potassium dichromate.
Add your answer:
Earn +20 pts
How many moles of the element oxygen are in 4.00 moles of the compound K2Cr2O7?
The formula means, among other things, that there are 7 atoms of oxygen in each mole of the compound. Therefore, in 4.00 moles of the compound, there are 28.00 moles of oxygen atoms. Elemental oxygen usually is diatomic, so that there would be the equivalent of 14 moles of diatomic elemental oxygen.
What is the chemical reaction between hydrogen peroxide and K2Cr2O7?
The chemical reaction between hydrogen peroxide (H2O2) and potassium dichromate (K2Cr2O7) in acidic medium produces chromium(III) sulfate (Cr2(SO4)3), water (H2O), and oxygen gas (O2). This reaction is used in the laboratory to test for the presence of alkenes due to the oxidizing properties of potassium dichromate.
What gas has a percent of volume of 20.95?
if this is math and your asking what gas has a percent by volume 78.09 it is nitrogen
What is the provider of oxygen in a chemical reaction called?
The provider of oxygen in a chemical reaction is called an oxidizing agent or oxidant. It is responsible for accepting electrons from another reactant, which results in the oxidation of that reactant.
What percent of oxygen does the earths grass produce?
Grass produces approximately 28% of the oxygen on Earth through the process of photosynthesis.
