Yahoo Web Search

related to: hydrogen

1. Chemistry -- Hydrogen Energy Level Problem?

In the equation, Z represents the nuclear charge. For hydrogen , that is 1. So, for the first part of the question: E...

1 Answers · Science & Mathematics · 31/10/2020

2. In the structure 2,4-diiodonon-2-ene how many carbons and hydrogens are there?

...a saturated hydrocarbon (It's not.) it would have 9 x 2 + 2 = 20 hydrogen atoms The "-ene" suffix tells you there is a...

1 Answers · Science & Mathematics · 23/02/2021

3. Help me find the percentage of the volume of nitrogen gas N2 (g) and hydrogen gas H2(g)?

The balanced equation:  N2(g) + 3H2(g)  → 2NH3(g) 1 mol N2 reacts with 3 mol H2 to produce 2 mol NH3  For gases , moles = volumes 1 volume N2 reacts with 3 volumes...

2 Answers · Science & Mathematics · 14/07/2020

4. What volume of hydrogen at 42 °C and 149 kPa can be burned in a fuel cell using 296 L of oxygen gas measured under the same conditions?

2 H2 + O2 → 2 H2O If the T and P are the same, the volume is directly proportional to the number of moles: (296 L O2) x (2 mol H2 / 1 mol O2) = 592 L H2

1 Answers · Science & Mathematics · 16/01/2021

5. A hydrogen atom emits a photon as its electron changes from n = 7 to n = 2. For the H atom, En = -2.18E-18*(1/n2) J.?

Delta E = -2.18X10^-18 (1/n^2f - 1/n^2i) Delta E = -2.18X10^-18 (1/4 - 1/49) = -5.00X10^-19 J/photon E = hc/wavelength 5.00X10^-19 J = 6.626X10^-34 Js (3.00X10^-8 m/s) / wavelength wavelength = 3...

1 Answers · Science & Mathematics · 30/09/2020

6. Chemistry Help?

Potassium + water ⟶ Potassium hydroxide + hydrogen 2K(aq) + 2H₂O(aq) ⟶ 2KOH(aq) + H₂(g) K...

2 Answers · Science & Mathematics · 14/12/2020

7. I need help with Bio 20?

... that oxidation = loss of electrons, gain of oxygen, or loss of hydrogen atoms. Reduction is the opposite: gain of electrons...

1 Answers · Science & Mathematics · 28/01/2021

8. chemistry ?

only one question allowed, you have 7. I'll do one Hydrogen + Nitrogen ➜ Ammonia 3H₂ + N₂ ➜ 2NH₃...

1 Answers · Science & Mathematics · 13/06/2020

9. Chemistry?

...the C2H2: C2H2 + 2 H2 → C2H6 The ethane and hydrogen are present in their stoichiometric ratio, so either one could be used...

1 Answers · Science & Mathematics · 15/12/2020

10. chem questions... help?

...between 2 carbons that are no longer used to bond with hydrogens .

1 Answers · Science & Mathematics · 08/07/2020