alright can anyone solve these two problems? for the mass question i think its either the first or last answer. thanks. 
Chem wizards i NEED help please!
- Thread starter Ancient_Fish_Master
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Just gotta do the math.
Get 2 x 10^2 and divide it by 100 to get 1 mL and answer accordingly for number 4.
Number 5 is just math again.... if ivory is 1.9g/cm^3 and you have 1cm^3.... it's... ?
And go from there with that idea of how to work it out for the rest.
EDIT: When you have the concept you shouldn't need to even do the math, the answer stands right out.
Get 2 x 10^2 and divide it by 100 to get 1 mL and answer accordingly for number 4.
Number 5 is just math again.... if ivory is 1.9g/cm^3 and you have 1cm^3.... it's... ?
And go from there with that idea of how to work it out for the rest.
EDIT: When you have the concept you shouldn't need to even do the math, the answer stands right out.
i know how to work out number five but do you just leave the last option alone since its already in grams?
Good 
Seeing as your looking for an answer in mass, yeah. Just compare them and you're good to go.
Seeing as your looking for an answer in mass, yeah. Just compare them and you're good to go.
Here's answer to #4. For #5, it's the first one, 1.90 g. BTW, while these are chemistry problems, they're plain math.
i actually worked mine different by starting with 1mL and using 2x10^2 micrograms / 100mL as a conversion factor and got the same answer. thanks.