CHEM HW NEED HELP ASAP WILL PAY 10 if you solve in less than an hour

SoccerBoss
Category:
Chemistry
Price: $10 USD

Question description

The gram solubility of pb(no3)2 is known to be 65g/100gH2O at 30 deg C

What is the molar solubility of this salt at this temperature

A 6.5M

B 2.15M

C 650 M

D 1.96 M

E 4.58 M

CH2O(g) + 2H2(g)=CH4(g) + H2O(g)

Determin the equilibrium constant for the reaction at 549K

Delta ΔH = -94.9 kJ

ΔS= -224.2 j/k

A.  481

B.  1.07E9

C.  2.08E-3

D.  9.35E-10

E.  1.94E-12

Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10^-5

A.  9.13

B.  9.25

C.  9.53

D.  4.74

E.  8.98

A solid Salt, AB2 is dissolved in pure water

If the concentration of B is measured to be 3.5E-4 M

What is ksp

A.  2.14E-11

B.  1.23E-7

C.  4.29E-11

D.  6.25E-7

A 100.00 mL sample of 0.20 M HF is titrated with 0.10 M KOH.Determine the pH of the solution after the addition of 200.00 mL of KOH. The Ka of HF is 3.5 x 10-4


Studypool has helped 1,244,100 students
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1819 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors