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

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?