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The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5>48002 g. Compute the mass of an electron.
A gas occupying 28mL at standard conditions is heated to 18C while the pressure is reduced to 0.98221 atm. What is the new volume occupied by the gas? Answer in units of mL.
A weather balloon containing 605 L of He is released near the equator at 1.01 atm and 305 K. It rises to a point where conditions are 0.489 atm
ammonium hydrogen phosphate is made from reacting phosphoric acid with ammonia. if 10.00g of ammonia react, how many moles of fertilizer will be produced?
Elements in the first short period are limited by the octect rule whereas those in the higher period can expand their valence shells. Describe what this means, account for this phenomenon and give an example of each.
Distinguishing the given compounds by Infrared spectroscopy, Cyclohexene and 2-hexyne both have the molecular formula C6H10
Plan and Design Lab: To Determine the water of crystallization in hydrated copper (2) sulphate. Hence determine the formula CuSO4.xH2O.
how many moles of ethylene glycol should be added to the radiator to lower the freezing point of the water from 0 degrees celcius to -18 degrees celcius?
If 17.2 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia.
A 347 ml sample of solution contains 5.1 g of CaCl2. Calculate the molar concentration of chloride ion in this solution
Vinegar is made by adding 33 grams of acetic acid to 625 grams of water. What is the percent by mass of acetic acid in this solution vinegar?
25g of a hydrocarbon undergoes complete combustion leading to the formation of 77 g of CO2. What is the % of carbon in the hydrocarbon?
when 7.50 g of magnesium reacts with 9.50 g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent?
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