All of the helium gas in a 2.0 liter balloon at a pressure of 101.3 kpa is added to a 4.0 liter tank that holds argon at 303.9 kpa of pressure. after the two gases are combined, what are the partial pressures of each gas? a) 50.65 kpa he; 253.25 kpa ar b) 50.65 kpa he; 303.9 kpa ar c) 101.3 kpa he; 303.9 kpa ar d) 202.6 kpa he; 303.9 kpa ar

Identify and describe the three ways that mutations affect organisms.

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.