A rigid container holds 1.50 moles of H2(g) at a pressure of 0.500 atm. What mass of CO2(g) must be added to this container to increase the total pressure to 1.00 atm

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Stage in which a typical star has completely stopped fusion

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123