Which state of matter are the particles together

3. Besides the major types of radioactive decay, there are two others: positron emission and electron capture. • Compare and contrast positrons with electrons. • Explain how positron emission works and how it causes transmutations.

Which of the following is a characteristic of the lanthanides? O A. They are silvery metals that conduct electricity. B. There are no known uses for the metals. C. They are all radioactive. D. They are used in making fireworks

A dozen is 12 of anything. One mole is 6.022 * 10^x of anything. What is the exponent (shown by the variable "x") for the value of one mole?

What tool measures the temperature of a liquid

How would you respond to roger? a. roger is incorrect. the melting wax is a physical change but there is no chemical change taking place. b. roger is correct. lighting the match is a chemical change and burning the candles is a physical change. c.

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

0.100 mol of CaCO3 and 0.100 mol CaO are placed in an 10.0 L evacuated container and heated to 385 K. When equilibrium is reached the pressure of CO2 is 0.220 atm. 0.

What is true about the charges of transition metal ions?

A gas obeys the ideal-gas equation of state P V = N k T, where N = n NA is the number of molecules in the volume V at pressure P and temperature T and n is the number of gm-moles of the gas.