Chemistry, 12.07.2019 05:30 KitKatKrunchy
Amixture of fe2o3 and feo was found to contain 72.00% fe by mass. what is the mass of fe2o3 in 0.0493 g of this mixture?
Answers: 1
Chemistry, 22.06.2019 15:30
A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas
Answers: 1
Chemistry, 23.06.2019 01:30
In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i
Answers: 1
Chemistry, 23.06.2019 06:40
1.) which of the following is a molecule but not a compound? a.he b.f2 c.h2o d.ch4 2.) what is a physical combination of substances? a.a compound b.a molecule c.a mixture d.an element 3.) what is a chemical combination of substances? a.a compound b.an atom c.a mixture d.an element 4.) what is the relationship between the solute and solvent in a solution? a.they form a compound b.they form a mixture c.they form molecules d.they form chemical bonds 5.) the gases in air dissolve in water. what would be one way to reduce the amount of a gas dissolved in water? a.add more water b.reduce the air pressure c.increase the air pressure d.stir the water 6.) how would you determine the solubility of a substance? a.find how well it dissolved various substances. b.find the mass and the volume of the substance. c.find the temperature at which the substance evaporated. d.find how much i was able to dissolve in a solute. 7.) the periodic table organizes all of the kinds of a.molecules. b.compounds. c.atoms. d.ions. 8.)what distinguishes two substances combined to become a compound vs. two substances combined to become a mixture? a.whether they can be easily separated b.whether they chemically bond together c.whether they both are visible d.whether they are heterogeneous 9.) the principle components of air are: n2 78% o2 21% ar 0.95% co2 0.038% this is a solution of a.molecules and atoms. b.molecules. c.compounds and molecules. d.atoms.
Answers: 1
Chemistry, 23.06.2019 09:00
How many moles of sulfur dioxide are in 2.26 × 10^33 sulfur dioxide molecules?
Answers: 3
Amixture of fe2o3 and feo was found to contain 72.00% fe by mass. what is the mass of fe2o3 in 0.049...
Mathematics, 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
Advanced Placement (AP), 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
History, 27.09.2020 21:01
Mathematics, 27.09.2020 21:01
Biology, 27.09.2020 21:01
Social Studies, 27.09.2020 21:01