Chemistry, 07.04.2020 23:43 asilverman
You need to prepare 250.0 mL of a 1.35 M HCl solution from a 4.50 M HCl stock solution. Glassware A is a 250 m L beaker. Glassware B is a 250 m L erlenmeyer flask. Glassware C is a 250 m L volumetric flask. Assuming that the accuracy of the concentration is important, which type of glassware should you use to make the solution
Answers: 3
Chemistry, 22.06.2019 10:30
Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88
Answers: 1
Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Chemistry, 22.06.2019 23:00
What does a numerical subscript following an element in a chemical formula mean?
Answers: 1
Chemistry, 23.06.2019 13:00
Write the balanced chemical reaction for the formation of fe2(so4)3 from fe2o3 and so3 and determine how many moles of fe2(so4)3 are formed when 12.7 mol of so3 are reacted.
Answers: 1
You need to prepare 250.0 mL of a 1.35 M HCl solution from a 4.50 M HCl stock solution. Glassware A...
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