The hydrogen emission spectrum is shown below. What is the energy of the 434 nm emission line? (The speed of light in a vacuum is 3.00 x 108 m/s, and Planck's constant is 6.626 X 10 34 J·s.) 760 nm

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together Location B: tectonic plates push apart

Why do liquids and gases take the shape of their containers

A molecule of a certain compound contains two nitrogen atoms and four oxygen atoms what is the molecular formula for this compound

Which of the following reactions results in a decrease in entropy? 2SO2 (g) + O2 (g) yields 2SO3 (g) 2NH3 (g) yields N2 (g) + 3H2 (g) 2H2O2 (aq) yields 2H2O (l) + O2 (g) NaHCO3 (aq) + HCl (aq) yields NaCl (aq) + H2O (l) + CO2 (g)

How many grams of oxygen are required for the combustion of 25.5 grams of magnesium? 2Mg (s) + O² (g) - > 2MgO (s)

When a solution of LiC2H3O2 reacts with a solution of MgSO4, what is the net ionic equation? No reaction Mg+2 (aq) + C2H3O2 - (aq) → Mg (C2H3O2) 2 (s) Mg+2 (aq) + 2C2H3O2 - (aq) → Mg (C2H3O2) 2 (s) 2Li + (aq) + SO4-2 (aq) → Li2SO4 (s)

What are the relations between Electrochemistry and Cancer?

Which of the following are sources of low-level radiation? A) medical X-rays B) nuclear weapons testing C) buring of fossil fuels D) all of the above E) a and c only

How does the nucleus of an atom change after beta decay? a. The nucleus remains the same b. The nucleus gains an electron. (c.) The nucleus loses a neutron. d. The nucleus loses a proton

Calculate Zeff for the 4s electron in a copper Cu