Other Chemistry Answers

DEAR SIR
in determination H2S in crude oil at first H2S extract with Borax 3% then titrate with IODINE why do not we use NaOH?
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The Ksp value for lead sulfide, PbS, is 1.0x10^-28. What is the concentration of Pb2+ in a saturated solution of lead sulfide?

a) 1.0x10^-56
b) 1.0x10^-14
C) 3.3X10^-29
d) 0.5x10^-14

10 mole of Ba(NO3)2 dissolves in water to give how many NO3- ions?
1 - 6.02 x 10 to the 23
2 - 6.02 x 10 to the minus 23
3 - 6.02 x 10 to the 24
4 - 1.204 x 10 to the 23
5 - 1.204 x 10 to the 25

What I want to know is how do I work out the question.

what is the pH of a solution if [H+]= 1×10-5

1.4g sample of KHP required 24.11cm3 of NaOH for its complete neutralization. Calculate the molarity of the NaOH used in titration?

5 Gram Alloy Of Cu And Ag Dissolved In Dilute Nitric Acid And Solution Was Heated With Nacl To Get 2.87 Gram Agcl % Pf Silver In The Alloy Is?

right or wrong
1-the rate of evaporation is decrease with increase the surface of liquid
2-claude process is economically more expersive than linde process for liquefaction of gas

whats the molarity of a solution of NaCl if 35 mL of .30 M of it are diluted to 500 mL?

calculate the molarity for 32 grams of NaCl dissolved in 250 mL H20

When 45 g of an alloy, at 25 c, are dropped into 100.0 g of water, the alloy absorbs 228.5 cal of heat. If the final tempature of the alloy is 37 c, what is its specific heat?