The formula HClO4 is named:

hypochlorous acid

hydrochloric acid

perchlorous acid

perchloric acid

What is the concentration of bromide, in ppm, if 12.41 g MgBr2 is dissolved in 2.55 L water.

Infrequent participation in physical activity can lead to a. high blood pressure during exercise b. muscle strain and soreness after exercise c. extra calories burned during exercise d. low heart rate after exercise

Needed for most chemical reactions and makes up of 70% of cells. A. Water B. Air C. Food D. Living space E. Carbohydrates

Pose a question about a complex organisms

What element has an r. m. m of 72

What do scientists do during data collection? O A. Analyze information to form a summary B. Gather information during an experiment C. Observe and ask scientific questions O D. Design an experiment to test a hypothesis

Organic molecules always: A. contain carbon. B. contain carbon, hydrogen, and oxygen respectively in a 1:2:1 ratio. C. are produced by living organisms. D. dissolve in water.

Whats the scientific notation of 0.00000923

A catalyst increases the rate of a chemical reaction by

What energy is changed to cell energy in stage 1 of photosynthesis. true or false