Which groups of elements on the periodic table form metal ions that do not require roman numerals in their names?

Marcel conducts an experiment to test which stain remover works best on mustard stains. He wants to make sure that he does not make mistakes and has correct data in his experiment. What should Marcel do to make sure that his data are correct?

Write the acid-base reaction that occurs when an aqueous solution of HCl is added to an aqueous solution of NaOH. (Use the lowest possible coefficients. Omit states-of-matter in your answer.

Methanol (CH3OH) is the simplest of the alcohols. It is synthesized by the reaction of hydrogen and carbon monoxide CO (g) + 2H2 (g) = CH3OH If 500 mol of CO and 750 mol of H2 are present, which Is the limiting reactant?

The "hardness" of water is usually expressed as parts per million (ppm) by mass of caco3. what is the molar concentration of ca+2 ions in a water sample with a hardness count of 175 ppm?

2 Ca + O2 = 2 CaO 50g Ca used what is the grams of CaO?

How many moles of al2o3 are formed when 0.78 mol o2 reacts with aluminum?

The dissociation of a weak electrolyte is suppressed when

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which of the following are also major levels of classification? Choose all answers that are correct. A. Class B. Order C. Family D. Level

An experiment with high validity is

What is the smallest part of a tree that can do all the things needed for life?