Achemical supply company sells sulfuric acid (h2so4) in a concentration of 4.00 m. what volume of this solution would you need to make 12.0 ml of a 0.50 m h2so4 solution? what is the volume needed?

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.

Can someone me with questions 12 and 13 plz.

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole