Is a flame test of an element a chemical or physical change?

Sodium has one valence electron, while chlorine has seven. what type of chemical bond is most likely to occur between sodium and chlorine?

About _% of high school seniors report misusing prescription drugs in the past month. 5 15 25 35

Potassium hydroxide is classified as an Arrhenius base because KOH contains (1) OH - ions (2) O2 - ions (3) K + ions (4) H + ions

Justify the following sentence "The molality is independent from the temperature whereas molarity is dependent on temperature"

10.00 mL of 0.10 M NaOH is added to 25.00 mL of 0.10 M HCl during a titration Which expression shows how to determine the Ht concentration of the solution now? A. 0.0025/0.025 B. 0.0025/0.035 C. O. 0015/0.025 D. 0.0015/0.

What is the volume of 2.00 moles of chlorine (cl2) gas at stp, to the nearest tenth of a liter?

A reaction of 12.640 g of copper oxide with 0.316 g hydrogen produces 2.844 g of water and Xg of copper. X=_9

If i burn steel wool inside a closed jar or bottle will the oxygen be completly gone

700 grams of glucose reacted fully with oxygen How many moles of gas will be created

The uranium used for nuclear fuel exists in nature in several minerals. Calculate how many moles of uranium are in 8.00 moles of the following: 1. carnotite, K2 (UO2) 2 (VO4) 2 • 3H2O 2. uranophane, CaU2Si2O11 • 7H2O 3.