An electron travels in a vacuum tube that is 2 meters in length. 002 seconds what is the average speed of the electron during this time

Why does South Pole and North Pole attract each other?

A solution contains 5.25 g of urea, CO (NH2) 2 (a nonvolatile solute) and 0.100 kg of water. If the vapor pressure of pure water at 25∘C is 23.7 torr, what is the vapor pressure of the solution?

Why is it important that plants have water available in their environment?

Which is the most ethical response if an experiment fails to confirm a hypothesis? Question 2 options: Revise the hypothesis and develop a new experiment to test it. Alter the data so that they conform to what we already know.

Explain why, in terms of the energy involved in bond breaking and bond making, the combustion of methane is exothermic.

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line

63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How long will it take for 65% of the nickel to undergo decay?