There are 76 atoms in total
Answer:
There are 1.287 grams of acetylene collected
Explanation:
Total gas pressure = 909 mmHg
Vapor pressure of water = 20.7 mmHg
Pressure of acetylene = 909 mmHg - 20.7 mmHg = 888.3 mmHg
1mmHg = 1 torr
22 ° C + 273.15 = 295.15 Kelvin
Ideal gas law ⇒ pV = nRT
⇒ with p = pressure of the gas in atm
⇒ with V = volume of the gas in L
⇒ with n = amount of substance of gas ( in moles)
⇒ with R = gas constant, equal to the product of the Boltzmann constant and the Avogadro constant (62.36 L * Torr *K^−1 *mol^−1)
⇒ with T = absolute temperature of the gas (in Kelvin)
888.3 torr * 1.024 L = n * 62.36 L * Torr *K^−1 *mol^−1 * 295.15 K
n = 0.04942 moles of C2H2
Mass of C2H2 = 0.04942 moles x 26.04 g/mole = 1.287 g
There are 1.287 grams of acetylene collected
Each cell does not perform every life function on its own. Instead, the cells work together to carry out the life functions of the organism.
Yes it could, but you'd have to set up the process very carefully.
I see two major challenges right away:
1). Displacement of water would not be a wise method, since rock salt
is soluble (dissolves) in water. So as soon as you start lowering it into
your graduated cylinder full of water, its volume would immediately start
to decrease. If you lowered it slowly enough, you might even measure
a volume close to zero, and when you pulled the string back out of the
water, there might be nothing left on the end of it.
So you would have to choose some other fluid besides water ... one in
which rock salt doesn't dissolve. I don't know right now what that could
be. You'd have to shop around and find one.
2). Whatever fluid you did choose, it would also have to be less dense
than rock salt. If it's more dense, then the rock salt just floats in it, and
never goes all the way under. If that happens, then you have a tough
time measuring the total volume of the lump.
So the displacement method could perhaps be used, in principle, but
it would not be easy.