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Calculate the mass of ammonia that contains a trillion hydrogen atoms. Be sure your answer has a unit symbol if necessary, and round it to significant digits.
Calculate the mass of vanadium(V) oxide that contains a trillion vanadium atoms. Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Calculate the mass of tetraborane B4H10 that contains a trillion ×1.0001012 boron atoms. Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
calculate the molar mass of the unknown acid round your answer to three significant digits. An analytical chemist weighs out 0.280 g of an unknown diprotic acid into a 250 ml. volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1400 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.7 ml of NaOH solution Calculate the molar mass of the unknown acid. Round your answer...
Round your answer to 3 significant digits. Calculate the volume in milliliters of a 6.09M silver nitrate solution that contains 50.0 g of silver nitrate (AgNO2). x10 mL ? X
Calculate the amount of heat needed to boil 156. g of methanol (CH3OH), beginning from a temperature of 0.8 °C. Be sure your answer has a unit symbol and the correct number of significant digits. 0 x10 Calculate the amount of heat needed to boil 156. g of methanol (CH3OH), beginning from a temperature of 0.8 °C. Be sure your answer has a unit symbol and the correct number of significant digits. 0 x10
Calculate the mass of hydrazine (N,H.) that contains a bilin (1.00x 109) hydrogen atoms. Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits. 다10
Calculate the number of hydrogen atoms in a 60.0 g sample of ammonia (NH3). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits. 0 X 5 ? Check
Calculate the mass of forsterite Mg2SiO4 that contains a trillion 1×1012 magnesium atoms. Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Be sure to put your answer into the proper number of significant digits. > Question 22 4 pts The total pressure exerted by a mixture of nitrogen, oxygen and water vapor is 742 mmHg in a sealed container. The partial pressure of N, is 581 mmHg, and the partial pressure of water vapor is 18 mmHg. What is the pressure (in atm) of the O2 in the container? Make sure to provide your answer to the proper number of significant...
Calculate the amount of heat needed to melt 107. g of solid ethanol (CH3CH2OH) and bring it to a temperature of-94.1 °C Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol °C. Round your answer to 3 Calculate the amount of heat needed to melt 107. g of solid ethanol (CH3CH2OH) and bring it to a temperature of-94.1 °C Round your answer to 3 significant digits. Also, be sure your answer contains a...