Describe the physical and chemical changes that take place during digestion

A positively charged ion has

Most reactions between an acid and a base form a salt and water. Which describes an acid-base reaction? A. synthesis B. decomposition C. double-replacement reaction D. single-replacement reaction

Which is the correct electron configuration for sodium (na) ?

Which part of a tree always grows down because of gravity? a. the roots b. the trunk c. the leaves d. the branches

Drag the appropriate elements to their respective bins

At room temperature and pressure what is the volume of one mole of oxygen?

Ibuprofen, a common pain remedy, has an empirical formula of C7H9O and a molar mass of approximately 218.078 grams per mole. What is the molecular formula of ibuprofen?

Copper (cu) is a transition element used in the making of coins. calculate the mass in grams of 0.0420

In 1864, the Solvay process was developed to make soda ash. One step in the process is represented by the balanced equation below.

A chemist must prepare of aqueous potassium permanganate working solution. He'll do this by pouring out some aqueous potassium permanganate stock solution into a graduated cylinder and diluting it with distilled water.