a meteorologist fills a weather observation balloon with hydrogen at a pressure of 1 atm at room temperature. if the volume of the balloon is 30 litres on the ground. what will it's pressure be at an altitude of 18km where the temperature is -50 degrees Celsius and pressure 0.1 atm?

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory