Which of the following element is the smallest?

A. Strontium (Sr)

B. Magnesium (Mg)

C. Beryllium (Be)

D. Calcium (Ca)

1. For the balanced equation shown below, how many moles of O2 will react with 0.3020 moles of CO2? 2C2H5OH + 6O2 → 4CO2 + 6H2O A. 0.151 moles O2 B. 0.201 moles O2 C. 0.302 moles O2 D. 0.453 moles O2 2.

What type of energy does water gain as it sits in the sun? O A. Heat energy O B. Electrical energy O C. Chernical energy O D. Mechanical energy

Safety is a concern around electronic equipment of all types. What particular safety hazard may exist A. Laser light B. High voltage C. Delicate equipment D. Radioactivity

Is alcohol a hydrocarbonis alcohol a hydrocarbon

What branch of chemestry studies changes in the chemical reactiojs?

Biofuel is any fuel that is produced from living or once living matter in a short period of time, days, weeks, or even months.

How are revolution and year related

Read the scientific question below. "Does sunlight make plants live?" What is a likely hypothesis for the question?

A chemist is using a solution of HNO3 that has a pH of 3.75. What is [H+] for the solution?

What is the oxidation number for CO2