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19.0 g of sodium hydroxide is dissolved in 731 g of water. Calculate the mass percent of sodium hydroxide in the resulting soulution.
Electrolytes and Molarity, Iii)salt is added to 81.4 g of water? iv) Identify the electrolytes and the non-electrolytes among the following compounds
What are the principal natural sources of hydrogen? What are the principal methods for the commercial preparation of hydrogen?
A gas bottle contains .65 mol of gas at 730 Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle?
if a nail polish remover contains 172mL of acetone how much heat is released in a complete combustion.
A 100.0-mL buffer solution is 0.175M in HCIO and 0.150M in NaCIO .What is the pH after addition of 150.0mL of HBr?
How many moles of HIO3 are produced when 1.29 grams of ICl3 and 7.81 grams of H2O react
The equivalence point is reached after addition of 25.0 ml Naoh a) calculate the ionication ka for the acid HA
If I add 1.65L to 112g of sodium acetate what is the molality of sodium acetate in the solution
Give the order of colors in a rainbow from shortest wavelength to longest wavelength and provide approximate numeric values for the highest
how many grams of carbon are required to react with 1.5x10^25 atoms of hydrogen to form CH4
Calculate the pH of the final solution after 250 mL of a 0.157 mol dm-3 solution of HCl is added to 500 mL of a 0.103 mol dm-3 solution of NaCN (Ka HCN = 6.2 × 10-10).
The inner and outer surfaces a spherical shell with radii of 1cm and 2cm are 300C and 100C respectively .If the thermal conductivity of the shell is 2w/m.k,determine the heat transfear through the shell.
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