If the precision rotameter reads $1\mathrm{.}8lpm$ at a temperature of $20C$ and a pressure of $600mmHg,$ correct this flow rate for NTP$.$

$(\frac{1\mathrm{.}8}{760})$

How many moles are there in the following:

$300$ gr of inorganic lead $(Pb).$ The $MW$ of $Pb=207$

$1\mathrm{.}45$ moles $=207\frac{300}{M}*\frac{6\mathrm{.}02{10}^6}{207}=$

$2\mathrm{.}3Kg$ of $Pb?$

$2\mathrm{.}3*1000=2300$

$100gr$ of toluene $)=(92\mathrm{.}1$

If the specific gravity $($SG$)$ of toluene is $0\mathrm{.}87,$ how many grams are there in $1\mathrm{.}2L$ of toluene?

$0\mathrm{.}87=\frac{9}{1\mathrm{.}2L}=$

If a cylinder containing chlorine gas is opened, releasing $100$

dimensions of $8ft10ft8ft$

Pleaze help with these three im so lost