The mass of a 50-mL volumetric flask is 40.638

g. After adding 15.0 mL of 95% ethanol and filling to the calibration mark with water, the flask weighed 88.219

g. What is the density of the mixture?

Which scientist would best describe the motion of the earth

At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 454. mmHg. Suppose a solution is prepared by mixing 102. g of heptane and 135. g of chloroform CHCl3.

According to the kinetic molecular theory, particles of matter

Describe the rings of Saturn including their relative and what they are made of

Consider the following balanced equation for the following reaction: 15O2 (g) + 2C6H5COOH (aq) → 14CO2 (g) + 6H2O (l) Determine the amount of CO2 (g) formed in the reaction if the percent yield of CO2 (g) is 83.

Why does conduction occur in solids and liquids easier compared to gases? Because the particles in gases are closer together and move slower Because the particles in gases are farther apart and move faster.

Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water.

Pedro listed characteristics of two types of protists in a chart. Two Groups of Protists X Y Often multicellular Are usually autotrophic Include euglenoids Are heterotrophs Reproduce using spores Include different molds Which headings best complete

Which of the following is a characteristic of nonmetals? a. nonmetals are often shiny and hard. b. nonmetals are often malleable. c. Nonmetals do not conduct electricity. d. nonmetals are often ductile.

How does a change in temperature affect the kinetic energy of the particles in a reaction?