Chemistry, 04.04.2020 10:37 YoVeoAnime
Given a positive number N, when N is rounded by a certain method (for convenience, call it Method Y), the result is \(10^n\) if and only if n is an integer and \(5*10^{n − 1} ≤ N < 5*10^n\). In a certain gas sample, there are, when rounded by Method Y, \(10^{21}\) molecules of \(H_2\) and also \(10^{21}\) molecules of \(O_2\). When rounded by Method Y, what is the combined number of \(H_2\) and \(O_2\) molecules in the gas sample?
(1) The number of \(H_2\) molecules and the number of \(O_2\) molecules are each less than \(3*10^{21}\).
(2) The number of \(H_2\) molecules is more than twice the number of \(O_2\) molecules.
Answers: 3
Chemistry, 22.06.2019 12:10
Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?
Answers: 3
Chemistry, 23.06.2019 02:00
Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).
Answers: 2
Given a positive number N, when N is rounded by a certain method (for convenience, call it Method Y)...
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