The mass of HCl that is contained in the solution is 147 g HCl
Why?
To find the mass of HCl we have to apply what is called a conversion factor. In a conversion factor we put the units we don't want at the bottom, and the ones we want at the top.
For this question, we want to go from liters of solution to mass of HCl, and the conversion factor is laid out as follows:
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The pressure of just nitrogen, oxygen, and argon in the air is 0.78 atm, if the total atmospheric pressure is 1.00 atm.
What distinguishes atmospheric pressure from air pressure?
As opposed to atmospheric pressure, which refers to the force of the earth's atmosphere, air pressure is the force of the air around us. Mercury barometers are used to measure atmospheric pressure, while tore gauges are used to measure air pressure.
Why is atmospheric pressure created?
What applies pressure on the atmosphere is the mass of the air molecules above. It weighs down on whatever is underneath because of the massive quantity of air molecules that collectively make up the layers of our atmosphere. Air molecules of all sizes carry some weight.
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Answer:
The isotopic mass of 41K is 40.9574 amu
Explanation:
Step 1: Data given
The isotopes are:
39K with an isotopic mass of 38.963707u and natural abundance of 93.2581%
40K with an isotopic mass of 39.963999u
41K wit natural abundance of 6.7302 %
Average atomic mass =39.098 amu
Step 2: Calculate natural abundance of 40 K
100 % - 93.2581 % - 6.7302 %
100 % = 0.0117 %
Step 3: Calculate isotopic mass of 41K
39.098 = 38.963707 * 0.932581 + 39.963999 * 0.000117 + X * 0.067302
39.098 = 36.33681 + 0.0046758 + X * 2.067302
X = 40.9574 amu
The isotopic mass of 41K is 40.9574 amu
Answer:
An endothermic process is any process with an increase in the enthalpy H (or internal energy U) of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.
