Which particle has a mass that is approximately the same as the mass of a proton?

(1) an alpha particle (3) a neutron

(2) a beta particle (4) a positron

Analysis of a sample of a covalent compound showed that it contained 14.4% hydrogen and 85.6% carbon by mass. what is the empirical formula for this compound?

The prefix milli - means 103 10-2 10-3 102

For each reaction, identify the element that gets reduced and the element that gets oxidized. 2AgCl+Zn⟶2Ag+ZnCl2 Identify the element that gets reduced. chlorine zinc silver Identify the element that gets oxidized.

If I have an unknown quantity of a gas at a pressure of 50.65 kPa, a volume of 25 liters, and a temperature of 300 K, how many miles of gas do I have?

What is the total concentration of phosphate ions in a 1.0 m aqueous solution of magnesium phosphate?

Ozone (o3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (no). nitrogen dioxide is also produced in the reaction. what is the enthalpy change when 8.50l of ozone at a pressure of 1.00 atm and 25°c reacts with 12.

How might vertical growth within a city decrease the impact of runoff and increase the opportunity for infiltration of water?

The correct answer is c. Energy processing from corn biofuels is not energy efficient.

If you went to the moon, how would your mass change relative to your mass on Earth? It would be the same on the moon as on Earth It would increase because of less gravity It would decrease because of less gravity None of the above

The pH of a solution is 2.60. What is the [H3O+] for the solution? 2.51 * 102 M 3.98 * 102 M 2.51 * 10-3 M 3.98 * 10-3 M