Molar mass?Mole Concept
determine the molar mass of Na2S2O3 .
what is 158.0 grams/mol of Sodium thiosulfate
How many grams are in 20 moles of Oxygen?
what is 320 grams of Oxygen
Determine the number of moles in 788 grams of Gold?
what is 4 moles of Au
determine the percent composition of CaF2 ?
what is 51.3% of Calcium and 48.7% of Fluorine
true or false: Stoichiometry is the study of quantative relationships between the amounts of reactants used and the amounts of products formed by a chemical reaction.
what is true
what is the molar mass of C12H22O11 ?
what is 342 grams/mol
determine the number of grams of Ethanol in 47 moles of ethanol(C2H5OH) .
what is 2,162 grams of ethanol
how many moles are in 100.0 grams of N2O ?
what is 2.27 moles of dinitrogen monoxide
What is the percent composition of Hydrogen in aspartame(C14H18N2O5), which is an artificial sweetner used in beverages?
The molar mass of aspartame is 294-grams/mole
what is 6.12% of Hydrogen
Law of Conservation of matter states that matter is neither created or destroyed in a chemical reaction.
what is true
How many atoms of potassium does 1 mole of potassium contains?
what is 6.022 x 1023 atoms of potassium
Benzoyl peroxide(C14H10O4)is a substance used as acne medicine. What is the mass in grams of 0.00350 moles of C14H10O4 ?
what is 0.847 grams of Benzoyl peroxide
how many moles are present in 500.0 grams of Pb2Cl ?
what is 1.80 moles of lead(II) chloride
The chemical formula of caffeine is C8H10N4O2. Determine the percent composition of Carbon in this formula. The molar mass of caffeine is 194 grams/mole.
what is 49.5% is made of Carbon
Determine the possible mole ratios of water and Iron in this Chemical Equation?
3Fe(s)+ 4H2O(l) --> Fe3O4(s) + 4H2(g)
what is 4molH2O/3molFe or 3molFe/4molH2O
which one has more, a mole of potassium, or a mole of sodium? explain your answer
what is a mole of Potassium
how many grams of Iron can be recovered from 100 moles of Fe3O4 ?
what is 16,800 grams of Iron
what is 25 moles of glucose
determine the emperical formula for a compound that contains 35.98% Aluminum and 64.02% Sulfur.
what is Al2S3
Butane, C4H is the gas burned in disposable lighters. How many moles of Oxygen are needed to burn 5.0mol of butane in a lighter produce Carbon Dioxide and water.
2C4H10 + 13O2 --> 8CO2 + 10H2O
what is 32 moles of O2
which contains more atoms, a mole of silver atoms or a mole of gold atoms?
what is they both contain the same number of atoms because a mole of anything contains 6.022 x 1023 atoms.
Acetaminophen, a common aspirin, has the formula C8H9NO2 . Determine the number of grams in 3-moles of Acetaminophen.
what is 453 grams of aspirin
Determine the amount of moles of Allyl sulfide, the chemical compound responsible for the smell of Garlic, since i have 2,000 grams of Allyl sulfide(C2H5)2S .
what is 22.2 moles of allyl sulfide
Propane is a hydrocarbon, a compound used only of Carbon and Hydrogen. It is 81.82% carbon and 18.18% Hydrogen. What is Emperical formula of propane?
What is CH3
What is the mass of Hydrogen produced when a 0.200-mol sample of sodium reacts with an excess of water to produce hydrogen and sodium hydroxide?
2Na + 2H2O ---> 2NaOH + H2
what is 0.202 grams of H2 will be produced