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Lead (II) nitrate reacts with sodium iodide react to produce a solid product lead (II) Iodide and sodium nitrate


(a) if 0.0830g of lead (II) nitrate solution is mixed with 0.300g sodium iodide solution, calculate the mass of the solid product made

(b) if 0.662 of lead (II) nitrate solution is mixed with 0.300g of sodium iodide solution, calculate the mass of the solid product made


A pentapeptide on partial hydrolysis gave three tripeptides fragments : gly-val-ala, phe-gly-val, val-ala-leu. Identify the sequence of the amino acid in the pentapeptide.


Calculate the mass of a lead that would be deposited by direct current of 1.3 A being passed through molten lead (11) bromide for 30 minutes.
Convert 34 dm^3 of ammonia gas to moles

If 20.0mL of 0.400M NaCl is added to 80.0mL of 0.900M NaCl. What is the resulting concentration of the NaCl?


What mass of copper(II) hydroxide would be produced when a solution containing 6.8g of OH- ions reacts with a solution containing excess Cu2+ ions?



0.25g of acid is titrated with 108M NaOH, if it takes 27.22ml NaOH to reach the endpoint, what is the equivalent weight of the acid
Nonspontaneous reactions that occur as a result of heating are:
A. endothermic and more random
B. endothermic and less random
C. exothermic and more random
D. exothermic and less random

Hi, i have this reaction: 4 NH3 + 3 O2 → 2 N2 + 6 H2O and I only know the moles of NH3 that are: 0.014502748.

how do i get all the others?


Calculate the relative molecular mass of the following gases if:
i. 0.4g of oxygen at stp of 280cm