Why do we heat the test tube in a glass beaker during a chemistry experiment and not directly over a flame?

The density of mercury is 13.5 g/mL and the density of water is 1.00 g/mL. If a mercury barometer reads 677 mmHg, what is the barometric pressure in cmH2O?

How do u find which is physical or chemical changes

A stable atom that has a large nucleus most likely contains 1. more neutrons than protons. 2. more protons than neutrons. 3. equal numbers of protons and neutrons. 4. changing numbers of protons and neutrons.

How many high energy bonds does atp contain?

After boiling a chicken in a stock pot, you let the chicken stock cool down and place it in the refrigerator overnight. The next day you notice that a solid layer of fat has formed on the top of a gelatinous mixture. a.

Planet X is a planet in our solar system. Planet Y is a dwarf planet. Identify their characteristics.

3/4 / 100 as a decimal and a percentage?

What is the net ionic equation for AgNO3 (aq) + Na2SO4 (aq)

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.