Which element is represented by the following electron configuration.

1s2 2s22p6 3s23p6 4s2 3d5

Nickel

Magnesium

Iron

Manganese

Question 13 Which element is represented by the following electron configuration. 1s2 2s22p6 3s23p6 4s2 3d10 4p4

Te

As

S

Se

Na2Co3 and BaCl2 form precipitate

Consider the following reaction: COCl2 (g) ⇌ CO (g) + Cl2 (g) A reaction mixture initially contains 1.6 M COCl2. Determine the equilibrium concentration of CO if Kc for the reaction at this temperature is 8.33 * 10-4 (Hint: Note the size of Kc).

Nicole has a 5 lb bag of carrots and a 2 oz bag of carrots. How much does Nicole have in total?

Will kilogram of hydrogen contain more atoms than kilogram of lead? explain.

Calculate the temperature of a gas when it is expanded to 5.25L. The gas originally occupies 3.45L of spave at 282K.

True or false forensic technicians receive OSHA data sheets regarding toxic chemicals they deal with in their lab.

What did robert boyle believe about atoms

Where do most carbon monoxide emissions come from?

The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant RSuppose the osmotic pressure of a certain solution is measured to be 22. atm at an absolute temperature of 353.

Which one of the following is a redox reaction?. 2 Na (g) + Cl2 (g) 2 NaCl (s) A. K2Cr2O7 (aq) + 2 KOH (aq) 2 K2CrO4 (aq) + H2O (l) B. H2O (l) H + (aq) + OH - (aq) C. Na2CO3 (s) + 2 HCl (aq) 2 NaCl (aq) + CO2 (g) + H2O (l) D.