Explain whether smoke filling up a room is diffusion or not

1. How many moles of tin are needed to react with 3.5 moles of hydrogen fluoride?

How many valence electrons are in an atom with the electron configuration in example A? Example A: 1s22s22p63s23p64s1 7 1 6 19

How many molecules of water are there in 0.80 Mol of water?

Which of the following is not a steroid? A. insulin B. androgens C. estrogens D. cholesterol E. All of the above are steroids

Do you guys just sit and answer questions for fun or is it your job because that just sounds lame as shiit. I would like to know how far jupiter is away from planet 12sypO. what is your snap also.

Of the total base sequence in human DNA, what percentage codes for proteins? A) Nearly 50 percent B) About 5 percent C) About 90 percent D) 100 percent

When an atom of phosphorus becomes a phosphide ion (P3-), the radius decreases, increases or stays the same?

Determine the percentage composition (by mass) of oxygen in NH4NO3.

Why does aluminum have a higher specific heat than gold?

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays