I'LL RATE YOU BRAINLEIST IF YOU ANSWER THIS PLUS I REALLY NEED THI RTNOW What is the average atomic mass of strontium? Naturally occurring strontium consists of four isotopes,
Sr-84, Sr-86, Sr-87 and Sr-88. Below is the data concerning strontium.
Sr-84 Sr-86 Sr-87 Sr-88
0.56% 9.86% 7.00% 82.58%

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.