How many ml of a 0.50m solution of hno3 solution are needed to make 500 ml of 0.15m hno3

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Which of the following units is not an official si unit