50.

What is the charge on the subatomic particles represented in Figure 4-3? Assuming all the particles in the nucleus are visible, what are the atomic and mass numbers of the atom shown?

What are atoms comprised of?

A monomer undergoes addition polymerisation. A 1 mol sample of the monomer is completely polymerised. How many moles of polymer might, theoretically, be formed? a) 1 b) 10-6 c) 1 divided by 6.02 into 10∧23 Answer is b and c, how?

Selenium is a semiconductor used in photocopying machines. what type of semiconductor would be formed if a small amount of gallium impurity is added to pure selenium?

How does ground water become polluted

Is a strong acid a. NaC₂H₃O₂ b. HC₂H₃O₂ c. KCl d. NH₃ e. HCl

Why does land heat up more faster than water?

Which gas law has assumptions of a fixed amount and temperature of a gas

Which scientific tool is the most useful when trying to convert a known amount of grams of water to moles of water?

What is the chemical compound of nitrogen gas?

Which of the following should be done when designing an experiment for a controlled scientific investigation? A. list the procedures B. plan the variables C. list the needed materials D. all of these