Chemistry, 20.10.2021 14:10 lordcaos066
Which of the following do you need to know to be able to calculate the molarity
of a solution of an ionic compound A2B in water?
1. the mass of A2B in the solution 2. the molar mass of A2B
3. the volume of water added 4. the total volume of the solution
A) 2 and 3 only B) 1, 2, and 4 only C) 1, 2, and 3 only
D) 1 and 3 only E) 1, 2, 3, and 4
Answers: 3
Chemistry, 21.06.2019 18:30
Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)
Answers: 2
Chemistry, 22.06.2019 06:00
The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
Answers: 1
Chemistry, 22.06.2019 13:50
Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
Answers: 1
Which of the following do you need to know to be able to calculate the molarity
of a solution of a...
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