What is the percentage by mass of hydrogen in the insecticide Lindane, C6H 6CI67
What percent by mass of bromine does the insecticide dibromoethane, C_2 H_4 Br_2, contain? The empirical formula for a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. If the molar mass of lindane is 290.8, what is the molecular formula for lindane?
Determine the mass percentage of carbon, C, hydrogen, H, and oxygen, O, in CH40. Refer to the periodic table for the atomic mass of each element.
10. If 1.50 g of solid C6H-NH3Cl is dissolved in 1.0 L of water, what is the pH of the solution? Molar Mass C&H NH3CI=129.59 g/mol A. 1.93 B. 3.27 c. 7.00 D. 10.73 E. 14.00
Calculate the percentage by mass of the indicated element in the following compounds Hydrogen in ammonium sulfate (NH4)SO4 a substance used as a nitrogen fertilizer. Express your answer using two significant figures. Platinum in ptcl2(nh3)2. A chemotherapy agent called cisplatin. express your answer using four significant figures.
8. 40 g of benzene is mixed with 125 g of the chemical reaction below? which is the ming i ng C6H() + Br() - C.HBr() + HBe(g) Benzene Bromine Bromobenene Hydrogen bromide
what is the mass percentage of c in morphine
In the synthesis of ammonia, what is the percentage yield of ammonia when 100.kg of hydrogen reacts with 800.0kg of nitrogen to produce 400.0kg of ammonia?
Malathion, an organophosphate parasympathomimetic, is an insecticide of relatively low human toxicity. It has been widely used in aerial spray to combat fruit fly and West Nile virus. The photodegradation of this insecticide can be described by first-order reaction with a half-life of 15 hr under sunlight. If a tank of malathion solution was exposed to sunlight from 8:00 am to 2:00 pm on a spray day, what is (a) the first-order rate constant in hr, and (b) the percentage...
Hydrogen-3 is radioactive and has a half life of 12.3 years. What percentage of a sample would be left after 1.32 years? Round your answer to 2 significant digits.
Zinc dissolves in hydrochloric acid to yield hydrogen gas. What mass of hydrogen gas is produced when a 4.30 g sample of zinc dissolves in 250.mL of 2.800 M HCl? What is the percent yield if 0.109 g of hydrogen were produced?