Answer:
im not a brain wiz but i think 20
Explanation:
Answer:
Explanation:
(a) Unbalanced equation
(b) Balanced equation
(c) Molar masses
The only compound for which you need an atomic mass is water.
You look up the atomic masses of each element in the Periodic Table, multiply by their subscripts in the formula, and add.
(d) Molar Ratio
You want to convert moles of carbon dioxide to moles of water.
The balanced equation tells you that the molar ratio is 1 mol H₂O:1 mol CO₂.
(e) Significant figures
The only measurement you are given is "about 650 L." That tells you that the trailing zero is not significant.
The volume has only two significant figures, so the mass of water can have only two significant figures.
Note: Intermediate calculations should carry at least one extra digit (a guard digit) to prevent cumulative round-off errors, answers to be reported must have the correct number of significant figures.
(f) The calculation
You don't give the temperature and pressure of the gas, so I shall assume STP (1 bar and 0 °C). At STP, the molar volume of a gas
is 22.71 L.
<u><em>Buffers</em></u> <span>are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molecules that react with oh- or h when these ions are introduced into solution.</span>
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Complete Question
Use the fact that to determine how much the pressure must change in order to lower the boiling point of water by a small amount 3.20e-01 K. You may assume that the entropy and density of the liquid and gas are roughly constant for these small changes. You may also assume that the volume per molecule of liquid water is approximately zero compared to that of water vapor, and that water vapor is an ideal gas. Useful constants: Atmospheric pressure is 101300 Pa The boiling point of water at atmospheric pressure is 373.15 K The entropy difference between liquid and gas per kilogram is 6.05e 03 J/kgK The molecular weight of water is 0.018 kg/mol. (a) 0.00e 00 Pa (b) 1.14e 03 Pa (c) 6.85e 26 Pa (d) 4.24e 05 Pa (e) 3.81e 28 Pa
Answer:
Correct option is B
Explanation:
From the question we are told that:
Given Equation
Change of boiling point \triangle
Generally the equation for Change in time is mathematically given by
Where
And
(from ideal gas equation)
Therefore
Therefore correct option is B