Rubbing alcohol is a mixture of isopropyl alcohol (C3H7OH) and water that is 70% isopropyl by mass (D=0.79g/mL) Express the concentration of rubbing alcohol in molarity and molality
1. Classify each of the following as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. (a) Air (b) Sugar (c) Brass gas (e) Wine (d) (1) Chlorine Soil
4 pc 1. Classify each type of matter as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous a mercury in a thermometer b. exhaleda c. chicken noodle soup d Sugar
which property of rubbing alcohol is a chemical property Which property of rubbing alcohol is a chemical property? Check all that apply. its acidity its boiling point (82.5 degree C) its density (0.786 g/cm^3) its melting point (-89 degree C)
34 Would a sample of air be categorized as: a pure substance a mixture a compound an element or none of these
Rubbing alcohol is composed of C, H and O only. Combustion of 0.255 g of rubbing alcohol produces 0.561 g of CO2 and 0.308 g of H2O. There is __________ mole of O is in 0.256 g of rubbing alcohol. Enter your answer as a decimal number and round your answer to two significant figures. Make sure you include the "0" before the decimal point. Otherwise, your answer will be graded as wrong even if you have the right answer.
Rubbing alcohol is a solution of 70 percent alcohol and 30 percent water. In the alcohol solution, which is the solute and which is the solvent? Explain.
Isopropyl alcohol, CH3CHOHCH3, is used in rubbing alcohol mixtures. Alcohol on the skin cools by evaporation. How much heat is absorbed by the alcohol if 4.39 g evaporates? The heat of vaporization of isopropyl alcohol is 42.1 kJ/mol
QUESTION 1 Gatorade is an example of a Heterogeneous Mixture Homogeneous Mixture Compound Pure substance QUESTION 2 A piece of material has a mass of 125.42 g. When the gem is placed in a graduated cylinder containing 50.0 ml. of water, the water level rises to 88.5 mL. What is the density of the gem in g/ml? 3.26g/mL 1.42g/mL 2.84g/mL 0.307g/ml Click Save and Submit to save and submit. Click Save All Answers to save all answers
the density of rubbing alcohol is 0.7854g/mL. what is the mas (in g) of 10.1 mL of rubbing alcohol (dont forget about units ans significany figures)? a) 7.93254 g b) 12.86 g c) 7.93 g d) 12.9 g