Mass of a sample = M = ?
Density of a sample = D = 8.9 g/cm³
Volume of the sample = 6 cm³
By using the formula = D = M / V
Density = Mass / Volume
Mass = Density x Volume
M = D x V
Putting the values of density and mass of the sample
M =8.9g/cm³ x 6cm³ =53.4 g
<span>So, the mass of the material in grams is 53.4g</span>
Answer:
the picture is too blury to see lol.
Explanation:
Answer:
325mg of Aspririn
Explanation:
First you should note the information that the problem gives you:
- The bottle of Aspirin has 5gr (grains)
- 1gr(grain) = 65mg (miligrams)
Also, the problem is asking about how many aspirin are in 5 gr (grains), so you should use a conversion factor, as follows:
-First you should put the quantity you need to convert:

-Then you write the denominator of the conversion factor that must have the same units that you want to convert, in this case gr:

-Then you write the numerator with the units that you want to obtain and the numerical equivalence between the units, in this case:

-Finally you multiply numerators and divide by denominators:

Answer:
72.2 moles of water is spilled
Explanation:
as moles=mass/mr
so mr of water is 16+2=18
13000/18=72.2
for the second one you can work out the moles of o2
by using moles= number of particles /6.02*10^23
so 4.65*10^26/6.02*10^23
so i got 772.4 on my calculator to work out the amount of mass
u use the equation mass=moles*mr
so 777.2*16=12435g of oxygen gas
hope it helps :)
43g id say. Due to conservation of mass that is the only one that makes even slight sense. If you had more air react then the nail would heavier