Scenario: You are testing two different household solutions with your cabbage indicator, using the color key to the right. One solution turns blue. A possible hydrogen ion concentration for this solution is: D

1 × 10-2 M

5 × 10-2 M

5 × 10-4 M

1 × 10-8 M

What are the first three quantum numbers for the electrons located in subshell 2s?

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

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 ?