H2 + N2 - - - > NH3

For this unbalanced chemical equation, what is the coefficient for hydrogen when the equation is balanced?

A. 1

B. 2

C. 3

D. 4

For the following reaction, 2 SO2 (g) + O: (g) 2 SO, (g) the equilibrium constant, K, is 1.32 at 627°C. What is the equilibrium constant for the reaction below? SO; (g) + 1/2 O: (g) SO, (g)

It takes 242./kJmol to break a chlorine-chlorine single bond. Calculate the maximum wavelength of light for which a chlorine-chlorine single bond could be broken by absorbing a single photon. Round your answer to 3 significant digits.

Which of the following statements holds true for a chemical change?

The decomposition of SOCl2 is first-order in SOCl2. If the half-life for the reaction is 4.1 hr, how long would it take for the concentration of SOCl2 to drop from 0.36 M to 0.045 M?

What mass of precipitate will form if 1.50 L of highly concentrated Pb (ClO3) 2 is mixed with 0.350 L of 0.170 M NaI? Assume the reaction goes to completion.

What statements applies to the horizontal rows or periods in the periodic table?

What can scientists measure to provide evidence that electrons can move from one energy level to another?

What type of metal is not attracted to magnets?

How are microwaves produced?

Non metals are acidic in nature explain with an equation