A gas X diffuses twice as fast as gas Y under the same conditions. If the relative molecular mass of X is 28. Calculate the relative molecular mass of Y?​

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

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

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?