The density of ethanol is 0.789 g/cm^3 at 20°C. What volume of ethanol has a mass of 15.5 grams?

$1*g=1xx10^3*mg=1xx10^-3*kg$ And thus $11*g=11*cancelgxx10^3*mg*cancel(g^-1)=11,000*mg$ How many $"kilograms"$ is this mass?

For a given substance, its tells you the mass occupied by one unit of volume of that substance. In essence, is a measure of how well the molecules of...

In order to be able to answer this question, you must understand what the of a substance tells you. The of a substance is nothing more than...

$rho=m/V$ $0.789=17.60/V$ $V=17.60/0.789=22.31 mL$

We have $"Density, "rho="Mass"/"Volume"$ And thus, $"Volume"$ $=$ $"Mass"/rho$ $=$ $(15.5*g)/(0.789*g*cm^-3)$ $~=$ $20*cm^3$

Find the volume of water added to fill the flask. $Density = (mass)/(volume)$ $Volume = (mass)/(density)$ $Vol (mL) = (18.52g)/((0.9970g)/(mL))$ $Vol (mL) = (18.52g)*((mL)/(0.9970g))$ $Vol (mL) = 18.58mL$...

$rho="Mass"/"Volume"=(16*g)/(8*cm^-3)$ $=$ $??*g*cm^-3$ And the volume of each piece is $??*cm^3$.

And thus we work out the quotient with the given data; note that we have to subtract the tare weight, i.e. the mass of the container: $"Mass"/"Volume"=(1300*g-250*g)/(1000*mL)=(1050*g)/(1000*mL)$ $=1.05*g*mL^-1...................$

Whenever you see molar masses in gas law questions, more often than not will be involved. This question is no different. To solve this, however, we will first need to...

Your tool of choice here will be the Periodic Table of . Grab one and look for the molar mass of sodium, $"Na"$, sulfur, $"S"$, and oxygen, $"O"$. Notice...