Is this statement true or false? Adding a base makes an acid less acidic. A. True B. False

Which of the following is supportive evidence of the big bang theory? A. pulsars B. cosmic microwave background radiation C. galactic clusters D. the different shapes of galaxies

Which is true of a tea kettle and a penny with equal tempatures? A. They have the same thermal energy B. The penny has more thermal energy C. The tea kettle has more thermal energy

Which statement describes how a basic coffee cup calorimeter works? a) It measures the mass of a substance given the specific heat and temperature of water in a cup of known size.

what pressure in N/m2 would be exerted if a 65 kg person were sitting on a stool with a seat diameter of 12 inches?

The average kinetic energy of the particles in an object is directly proportional to its a. heat. b. volume. c. temperature. d. potential energy.

Coffee is decaffeinated industrially using supercritical (sc) CO2. One advantage to using scCO2 is that the polarity of the supercritical fluid can be tuned by varying temperature, pressure and cosolvent additives.

The relationship between pressure and temperature of a gas, when volume and moles of a gas are held constant, is: P*T = k. TRUE FALSE

The system is said to be in dynamic equilibrium when: Select one: a. there is no longer any net change in the concentrations of products or reactants. b. the forward and reverse reactions come to a halt. c. None of these d.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine? a. measure the mass of the gas b. measure the speed of the gas molecules c.

A 1.268 g sample of a metal carbonate, MCO3, was treated 100.00 mL of 0.1083 M H2SO4, yielding CO2 gas and an aqueous solution of the metal sulfate. The solution was boiled to remove all of the dissolved CO2 and then was titrated with 0.1241 M NaOH.