How many atoms of Cu are there in 34.5gof cu? (cu= 63.5, Na= 6.0×10^23​

Asolution is prepared using 0.125 glucose c6h12o6 is enough water to make 250 g of total solution the concentration of the solution, expressed in parts per million is

What are the similarities of physical and chemical change ?

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients