Dalton used the lightest element as his standard for atomic mass. what is this element?
a. hydrogen
b. carbon
c. oxygen
d. nitrogen

100mg magnesium reacts with 20ml of 1.0m hcl

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap