Binary compounds of alkali metals and hydrogen react with water to liberate hydrogen gas. the hydrogen gas from the reaction of a sample of sodium hydride with an excess of water fills a volume of 0.475 l above the water. the temperature of the gas is 35 ∘c and the total pressure is 755 mmhg.
find the mass of h2 liberated and the mass of nah that reacted.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

How have the greenhouse gasses increased from the year 2000 to 2018

Draw the structure for 5-isopropyl-2-methyl-3-nonene