If a certain volume of an aqueous solution had a pH of 5 and contained 30 H+ ions, how many H+ would be found in the same volume of aqueous solution which has a pH of 3?

Which pigment molecules are responsible for the yellow, orange and red colors of fall leaves?

(1) You notice that your friend’s grass is greener than yours. (2) You think, ‘why is my friend’s lawn so much greener than mine?’ (3) You think that watering their grass might cause their grass to be greener. You decide to test this idea. (4) If watering grass makes it green, then the grass that you water in your experiment should be greener than grass you don’t water in your experiment. Sentence (1) is an example of a…

Which of the following is NOT produced during the Krebs/Citric Acid Cycle?

In an experiment, the variable that is manipulated by the researcher is called the…

As the pH of an aqueous solution decreases, the number of H+ ions in the solution

Which of the following is NOT a particulate matter?

Which of the following illness / diseases are related to exposure asbestos? (select all that apply)

Give the equation how to convert fahrenheit to celsius, and show your calculation process: 200 °F = _____°C.

A worker was exposed to inorganic lead dust at 7 mg/m3 for 3.0 hrs, at 6 mg/m3 for 4 hrs, and 9.2 mg/m3 of dust for 1.0 hrs. What was the TWA? If the company is adopting TLV (50 µg/m3) as standard for inorganic lead, was the exposure in compliance, and why? The inorganic lead has 207.2 g/mol. What’s the TWA in ppm? Show your step-by-step calculation process and include appropriate unit for credits.