If an unknown mineral has a hardness between 5 and 9, what could you do to the mineral to find out more about its hardness?

Need to know how many grams of Cr2O3 can react with 50.0 grams os Si?

1 - Hard and symmetrical in shape forms from a solution called? 2 - The stuff which dissolves a substance is called?

An acid can be defined as a. a proton acceptor. b. a proton donor. c. neither a proton donor nor a proton acceptor. d. both a proton donor and a proton acceptor.

Consider isotopes ions protons and electrons. how many of these did dalton not discuss in his atomic theory?

Consider the β + decay of 116c. part a is this decay energetically possible? the atomic mass of 116c is 11.011434 u.

What change would you expect on the rate of theSN2 reaction of 1-iodo-2-methylbutane withcyanide ion if the nucleophile concentration isunchanged and the alkyl halide concentration isdoubled?

The nuclear reaction that occurs by combining two or more lighter atoms into a larger one is called what? a. nuclear fusion b. nuclear fission c. beta emission d. alpha emission

Though energy can change forms, the total amount of energy in the universe remains constant. True or false

a dynamic state where two opposing forces are in balance, where two opposite event are occurring at equal rate is

What is mitosis in a living cell?