In the reaction 2Ca + O2 → 2CaO for every 2 Ca you will need how much O2? a. 1 c. 3 b. 2 d. 4

When a person uses an iron to remove the wrinkles from a shirt, why does heat travel from the iron to the shirt?

What does it look like when a Nuclear Membrane dissolves?

Which of the following ions are likely to form? Mn3+ N3- Zn4+ Li2+ K-

What does the velocity of a wave measure?

Question 1 a chemist dissolves 154. mg of pure hydrochloric acid in enough water to make up 170. ml of solution. calculate the ph of the solution. be sure your answer has the correct number of significant digits

Define "Homoglycan" and "Heteroglycan" and give an example of each

If you have 200 grams of iodine how many atoms do you have?

Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The remaining 2% are natural minerals such as iron and sulfur. Consider a 84.7-g sample of sea salt.

Which element in group 15 is the strongest metallic character?

Can neptune sustain life?