Calculate the mass, in grams, at 25 °C of a) 60.0 mL of an unknown organic substance, which has a density of 1.088 g/mL b) 2.200 L of copper which has a density of 8.94 g/mL.
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- The minimum level of mercury levels in water considered safe is 1 part per billion (ppb) by weight. Ifyou did an analysis and found that the concentration was 0.59 parts per billion. What quantity of mercuryin grams was present in 8.52 L of the water, the density of which is 0.998 g/ml? (1 ppb Hg = 1 ng Hg per1 g water)While in Europe, if you drive 115 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 26.0 mi/gal ? Assume that 1euro=1.26dollars.Sulfur dioxide and nitrogen dioxide are considered to be air pollutants.a) Where would you most likely find these pollutants?b) Which of these pollutants is more toxic?c) Express 0.045 ppm nitrogen dioxide in ppb?
- Assuming that gasoline is 100% isooctane and that the density of isooctane is 0.792 g/mL, what mass of CO2 (in kilograms) is produced each year by the annual U.S. gasoline consumption of 4.6 X 1010 L?Chemical conversions 1. What is the molecular weight of nitrobenzene, often known as C_6*H_5*O_2*N? 2. How many moles of nitrobenzen are contained in 50.0 g? 3. What is a substance's density in grammes per cubic centimetre if its specific gravity is 1.203? 4. How much space is filled by 50.0 g of nitrobenzene in cubic metres, feet, and inches? 5. What is the pressure at the base of a cylindrical container holding nitrobenzene that has a base that is 1 inch in diameter? What does gauge pressure mean? 6. How many molecules of nitrobenzene are in 50.0 g?A gas sample has a volume of 0.185 X 10-6 m3 at 38 °C. What is its volume at 97 °C?
- The U.S. proven natural gas reserves in 2013 were 323 trillion ft3 . How long will these reserves last if there are no imports or exports and if the U.S. annual rate of use of 24.5 trillion ft3 continues?The density of air under ordinary conditions at 25C is 1.19 g/L. How many kilograms of air are in a room that measures 10.0 ft x 11.0 ft and has an 10.0 ft ceiling?2)A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from 25 °C to 35 °C. What was its new volume? Can you show me your work on paper so that I can better understand it?
- Match the unit with the quantity it measures: mmHg cL k g mm match the above unites the quantitiy it measure: temperature, presure, volume, length, and mass.At room temperature, water is a liquid with a molar volume of 18 mL. At 105°C and 1atm pressure, water is a gas and has a molar volume of over 30 L. Explain the largedifference in molar volumesA 4.74 g sample of C2H3X3 (g) has a volume of 891.0 mL at 769 mm mercury and 35.0 degrees C. What is the molar mass of X? R=0.0821 L-atm/mol-K d=P(MM)/RT 1 atm=760 mm mercury