0.0400 M NaCI solution was formed when 32.0 grams of NACI was dissolved in enough water. What was the total volume of the solution formed

Why are people not able to scuba dive in the deep part of the ocean

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?