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1. ### The total pressure of a mixture of oxygen and hydrogen is 2.50 atm. The mixture is ignited, and the water is removed. The remaining gas is?

Composition of a mixture of H2 and O2 2H2(g) + O2(g) --> 2H2O(l) ............ there is an excess of H2 Let x atm be the limiting amount of O2. 2x atm of H2 reacted. Therefore, the original mixture...

2 Answers · Science & Mathematics · 08/09/2019

2. ### Regarding calculating the valency of carbon in methanol?

... on certain assumptions beginning with the oxidation state of hydrogen in a compound is +1 and the oxidation state of oxygen in a compound is -2...

1 Answers · Science & Mathematics · 07/09/2019

3. ### How do shared electrons rotate around two Nuclei?

...necessarily make the circular orbits assumed in the Bohr model of Hydrogen. Electrons do tend to occupy shells with specific populations...

1 Answers · Science & Mathematics · 05/09/2019

4. ### The elements contained in acetylsalicylic acid, the active ingredient in aspirin, are carbon, hydrogen, and oxygen. The combustion of 4.000g?

n = PV / RT = (0.987 atm) x (3.87 L) / ((0.082057338 L atm/K mol) x (25 + 273) K) = 0.1562 mol CO2 (0.1562 mol CO2) (1 mol C / 1 mol CO2) × (12.01078 g C/mol) = 1.876 g C (1.300 g H2O) / (18.01532 g H2O/mol) × (2 mol...

1 Answers · Science & Mathematics · 04/09/2019

5. ### Which one of water's unique properties allows living organisms to maintain a constant internal temperature?

... and D), while B is true. Water does exhibit hydrogen bonding, which is what allows water to be a liquid at ambient...

2 Answers · Science & Mathematics · 30/10/2019

6. ### Need help in physics!?

... if the graph shows the light before or after passing through the hydrogen. b) The phrase “connect the wavelengths...” is meaningless...

1 Answers · Science & Mathematics · 01/09/2019

...exist in the solid. NO3^- ions are integrated into the hydrogen bonding lattice of water molecules. Were you keeping count...

1 Answers · Science & Mathematics · 27/08/2019

8. ### Which intermolecular forces for these formulas?

... forces) .... there will also be Debye forces - Hydrogen Bonds - Ion-Dipole Forces .... for this you need an ion...

2 Answers · Science & Mathematics · 25/08/2019

9. ### which event would damage the earth more a 1100 foot comet impact or a US - CHINA NUCLEAR WAR?

... some 49,000 years ago. About 175 megaton or one hefty hydrogen bomb. Say wipe out all of LA county. Scenario 2> In...

2 Answers · Science & Mathematics · 25/08/2019

10. ### The Andromeda galaxy is moving toward us at 3.01x105 m/s. By how much will the frequency of the 6.17x1014 Hz hydrogen?

For a stationary receiver (observer), new frequency f = F₀*c/(c + v) ← v -ve if src moving toward rcvr using c = 299 792 458 m/s, new f = 6.17e14Hz * 299792458m/s / (299792458m/s - 3.01e5m/s) new f = 617620107836264.23161624863437674 Hz and so the shift is Δf = f - F₀...

1 Answers · Science & Mathematics · 26/08/2019