Which set of elements have similar physical and chemical properties?

carbon, nitrogen, oxygen

helium neon, argon

hydrogen, lithium, beryllium

fluorine, chlorine, oxygen

What is the ph of a solution resulting from 2.50 ml of 0.075 m hcl being added to 35.00 ml of pure water?

Think of a situation where "particle motion" is a blessing in disguise for the entire humanity.

What is the charge of flourine

Which instrument would be used to measure the volume of a small jar of juice?

Aqueous hydrochloric acid reacts with solid sodium hydroxide to produce aqueous sodium chloride and liquid water. If of water is produced from the reaction of of hydrochloric acid and of sodium hydroxide, calculate the percent yield of water.

Some constellations, such ad Ursa Minor, are visible in the sky year-round; other contellations appear for only part of the year. explain why this happens.

What does phenolphthalein turn pink?

What is the best solution to groundwater depletion?

Which combination of protons neutrons and electrons is correct for the isotope of copper - 63?

What is the purpose of a domain?