Which subatomic particle (or particles) exist in an atom's nucleus?

Which of the following is NOT a characteristic of sedimentary rocks?

Which of these is an element A. Sugar B. Salad. C. Potassium D. Water

How many electrons does an aluminum ion have with a + 3

How many grams of al are in 4.70 moles?

8. Which of the following statements is true? A) All spontaneous processes are exothermic. B) All nonspontaneous processes are endothermic. C) All spontaneous processes release free energy D) Entropy always increases in a spontaneous process.

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?

In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction? a.

How do acids and bases affect the quality of freshwater sources?