2. A mixture of 5.7 moles of helium and 6.5 moles of hydrogen has a total pressure of 243 kPa. What is the partial pressure of the hydrogen in kPa?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas

What the blanks in these lines are ?