Which is the most important characteristic in determining an elements chemical properties

Water is made of hydrogen and oxygen in the ratio of 2 hydrogen atoms: 1 oxygen atom. What type of substance is water? Select one: Element Atom Molecule Mixture

What is the minimum number of kilojoules needed to change 40.0 grams of water at 100 degree celsius to steam at the same temperature and pressure?

In addition to decreasing the amount of fat in a dish, salsa can also increase the amount of A. calories and cholesterol. B. sodium and cholesterol. C. vitamin C and fiber. D. calcium and phosphorus.

Why would a table be more suitable than a graph to show data

A toothpaste company developed a new product. On the package, they printed the claim, "5 out of 5 dentists recommend this product!" Should a consumer trust this statement? A. No; they didn't explain the word "recommend." B.

Why carbon dioxide is poisonus

Aurelie is doing a lab in her chemistry class. Her teacher defined a calorie as the amount of energy needed to raise the temperature of one gram of water one degree Celsius.

What is the difference between the carbon allotropes diamond and graphite

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 L tank and at a temperature of 301 K? (R=0.0821 L·atm/mol·K

If there is a 50kg block on earth, then what is the blocks weight?