Answer:
The concentration of O2 will begin decreasing.
Explanation:
Explanation:
Structural Formulas v. Empirical Formulas
An empirical formula (like a molecular formula) lacks any structural information about the positioning or bonding of atoms in a molecule. It can therefore describe a number of different structures, or isomers, with varying physical properties. For butane and isobutane, the empirical formula for both molecules is C2H5, and they share the same molecular formula, C4H10. However, one structural representation for butane is CH3CH2CH2CH3, while isobutane can be described using the structural formula (CH3)3CH.
The atomic number of an atom is the amount of protons.
So this atom has 26 protons and the amount of protons are EQUAL TO THE AMOUNT OF ELECTRONS.
So this atom has 26 electrons.
Answer:
268.75 K
Explanation:
We are given;
- Initial pressure, P1 as 600 torr
- Initial temperature, T1 as 215 K
- New pressure, P2 as 750 torr
We are required to determine the new temperature, T2.
To solve this question we are going to use the pressure law of gases.
According to pressure law, the temperature of a fixed mass of a gas and its pressure are directly proportional at constant volume.
That is;
Pα T
Therefore;
Thus,
Therefore, the new temperature is 268.75 K
Answer:
23.4 torr
Explanation:
For solutions that contain non-volatile solutes, the vapor pressure of the solution can be determined by using the mole fraction of the solvent and the vapor pressure of the pure solvent at the same temperature.
P
sol
=
χ
solvent
⋅
P
∘
solvent
, where
P
sol
is the vapor pressure of the solution
χ
solvent
is the mole fraction of the solvent
P
∘
solvent
is the vapor pressure of the pure solvent
In your case, you know that the vapor pressure of pure water at
25
∘
C
is equal to
23.8
torr. This means that all you have to do is determine the mole fraction of water in the solution.
As you know, mole fraction is defined as the number of moles of a component of a solution divided by the total number of moles present in that solution.
Use glucose and water's respective molar masses to determine how many moles of each you have
18.0
g
⋅
1 mole glucose
180.0
g
=
0.100 moles glucose
and
95.0
g
⋅
1 mole water
18.015
g
=
5.273 moles water
The total number of moles present in the solution will be
n
total
=
n
glucose
+
n
water
n
total
=
0.100
+
5.273
=
5.373 moles
This means that the mole fraction of water will be
χ
water
=
5.273
moles
5.373
moles
=
0.9814
Finally, the vapor pressure of the solution will be
P
sol
=
0.9814
⋅
23.8 torr
=
23.4 torr
The answer is rounded to three sig figs.