Density for Cu: 8.96
g/ml <span>
Density for Ag: 10.5g/ml</span>
First set up an
equation: mass = density * volume <span>
8.96 * x + 10.5* (10.12 - x) = 105.0
The density of the Cu (8.96) times x (the amount of copper)
added to the density of Ag (10.5) times voume of silver (10.12 - the amount of
copper) should equal the total weight.
</span>
Solving for x:<span>
x = 0.818 mL
So
mass of copper = 8.96 * .818 = 7.33
<span>mass percent of copper = 7.33/105 * 100% = 6.98%</span></span>
A) Take a very spicy chilli and chew it it will clear up
b) Drink hot water
c) Take medicine
d) Exercise for a long time till it makes you drench it helps
Photosynthesis by plants.
What they have in common is that they both have the same number of atoms.
We have:
V = 55.0 gallons x 3.78541 = 208 L
P = 16500 kPa
T = 23 + 273.15 = 296.15 K
Part A) From the equation PV =
we get:
mass of O₂ = (16500 kPa x 208 L x 32 g/mol) / (8.314 x 296.15 K)
= 44.6 Kg
Part B) at STP we have:
T = 273.15 K and P = 101.3 kPa
so from PV = mRT / M
V = (44600 x 8.314 x 273.15) / (32 x 101.3)
= 31248 L
Part C) From the equation PV = mRT / M
we get
T = (150 atm x 101.3 kPa / atm x 208L x 32g/mol) / (8.314 x 44600)
= 272.8 K
Part D) we have:
T = 24 + 273.15 K = 297.15 K
so from PV = mRT / M, we get
P = (44600 x 8.314 x 297.15) / (32 x 55)
= 62464 kPa