If the pressure and temperature of air are 22.6 kpa and -55 °c at an elevation of 10.973 km above the earth's surface, what is the pressure at an elevation of 17.079 km, assuming that the temperature is constant? the molecular weight of air is 28.9 g/mol and the gas constant r is 8.314 j/(mol. k).

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

hi,

the capital city of australia is canberra.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?