A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of glycerol, dimethyl sulfoxide, diethylamine, methyl acetate, and ethanolamine. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density -1 glycerol 1.3 g- mL¯ dimethyl sulfoxide 1.1 g- mL- -1 diethylamine 0.71 g- mL -1 methyl acetate 0.93 g- mL ethanolamine 1.0 g - mL -! Next, the chemist measures the volume of the unknown liquid as 1900. cm and the mass of the unknown liquid as 1.34 kg. Calculate the density of the liquid. Round your answer to B significant digits. Given the data above, is it possible to identify the liquid? ? alycerol dimethyl sulfoxide O diethylamine O methyl acetate ethanolamine If it is possible to identify the liquid, do so.

The chemist measures the volume of the unknown liquid as 0.615 L and the mass of the unknown liquid as 385. g. Calculate the density of the liquid. Be sure your answer has the correct number of significant digits. Is it possible to identify the liquid? If it is possible to identify the liquid, do so.

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 79.0 cm wide. The biologist estimates she will need 8600. L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres. Be sure your answer has the correct number of significant digits.

Methane gas and chlorine gas react to form hydrogen chloride gas and carbon tetrachloride gas. What volume of hydrogen chloride would be produced by this 3 reaction if 6.0 cm° of methane were consumed? Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits. x10 미□

Payalben

Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H2O) and carbon dioxide (CO2) chemically react to form the simple sugar glucose (C6H12O6) and oxygen gas (O2). What mass of carbon dioxide is consumed by the reaction of 9.07g of water? Be sure your answer has the correct number of significant digits.

Calculate the mass of glucose (C6H₁2O6) that contains a billion (1.0 × 10°) oxygen atoms. H. Be sure your answer has a unit symbol if necessary, and round it to 2 significant digits. X S

A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 71.1 °C. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 °C. What is her percent error? Do not show your work in the space provided. Record only your final answer with the correct number of significant digits and the proper units.