How many ions are there in 0.187 mol of Na + ions

Laboratory preparation of ethyne

Which compound is an Arrhenius base? (1) CH3OH (3) LiOH (2) CO2 (4) NO2

The rate of entropy production and hence the amount of lost work will Group of answer choices a) none of the above increase as the irreversibility increases for a process. b) decrease as the irreversibility increases for a process.

Which term describes this reaction? addition condensation elimination substitution

Potassium nitrate absorbs a large amount of heat energy from the water as it dissolves. How does this explain the solubility curve you graphed for potassium nitrate?

The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have? 4 2 6 5

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b.

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?