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- General formula of a polymer is-(CH2CHCHCN)n-, where n is typically greater than 10,000. Then take a sample of this polymer weighs 755.9 g and contains 3.112 x 1020 molecules of -(CH2CHCHCN)n-, so calculate n?The compound NHxNO3 contains 5.04% hydrogen by mass. What is the value of x? Enter your response as a whole number.An experiment requires that enough C2H5Cl be used to yield 13.9 g of chlorine.How much C2H5Cl must be weighed out?
- Make a dilution series to get to 1:100. Start with making 1:10 dilution by adding 1mL of sample and 9mL of diluent, now continue the series to get to 1:100. The formula you may use is V1D1=V2D2a)what answer should be reported, with the correct number of significant figures , for the following calculation? (16.84-15.93) / 9.6318 x 12.3 b) How many formula units does a 200.0g sample of pure MgCl2 contain?How many molecules are there in (5.95*10^ ^ 2)gCCl 4 : Answer to 3 significant figures .
- Write the correct answer with 1 place after the decimal point What is the molecular mass of C8H2?Calculate the formula mass for each of the following compounds. ZnCO3ZnCO3 Express your answer using two decimal places. H2SO4H2SO4 Express your answer using two decimal places. CBr4CBr4 Express your answer using two decimal places. AlPO4AlPO4 Express your answer using two decimal places.A 48.6 g sample of 1,2-pentanediol (CxHyOz) is burned in the presence of excess oxygen, and a total of 50.4 g of water and 102.7 g of carbon dioxide is produced. Determine the empirical formula of 1,2- pentanediol.