You heated a 3.00 sample of nahco3 and found the sample's mass decreased by 1 gram. how pure is the sample of nahco3

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

Which of the following describes a situation where competition between producers exists

The identities of substances are the same before and after which type of change