1-why is it important that the small beaker that you are weighing is clean and try?

A molecule of water (H2O) consists of two hydrogen atoms joined to one oxygen atom by single bonds, but the electrons are not shared equally between the oxygen and hydrogen atoms.

Consider the following unbalanced reaction for the combustion of hexane: C6H14 (g) + O2 (g) - -> CO2 (g) + H2O (g) Balance the equation and determine how many grams of CO 2 gas will form when 5.35 grams of C6H14 reacts with excess O2.

Why do organisms need to maintain homeostasis

The temperature in the stratosphere is - 24°c. calculate the root-mean-square speeds of n2, o2, and o3 molecules in this region.

Find pH for lemon juice pH = - log[0.00500]

What is the molar mass of 2KCL?

What uses the most oil in the United States A. electric power B. industrial C. residential D. transportation

A jar containing only nickels and dimes contains a total of 60 coins. the value of all the coins in the jar is $4.45. solve by elimination to find the amount of nickels and dimes that are in the jar.

In water, hydroxides of Group 2 metals a. are all strong bases. b. are all weak bases. c. are all acids. d. are nonelectrolytes

Explain what happens to the particles in a substance during a physical change.