The number of total electrons of iron is:

a) 55.85

b) 29.85

c) 26

d) 27.78

e) 56

An monatomic ideal gas at 300 K has a volume of 15 liters at a pressure of 15 atm. Calculate a. The final volume of the system b. The work done by the system c. The heat entering or leaving the system d. The change in the internal energy e.

What is the chemical treatment for shattered glass on the floor?

How does an organic pH indicator works. (illustrate using chemical equations and mathematical expressions

Which of these phase changes does NOT involve changing a liquid into a gas? vaporization sublimation boiling evaporation

A certain microwave has a wavelength of 0.032 meters. Calculate the frequency of this microwave

A small cubical furnace 50 by 50 by 50 cm on the inside is constructed of fireclay brick [k = 1.04 W/m. degree C] with a wall thickness of 10 cm. The inside of the furnace is maintained at 500 degree C, and the outside is maintained at 50 degree C.

What is the molar mass of Al2 (SO4) 3?150.03 g/mol 278.03 g/mol 342.17 g/mol 450.09 g/mol

1. Which of the following species determines the chemical properties of an atom? A. Electron B. Neutron C. Nucleus D. Proton 2. The following glasswares are used to measure the volume of liquids except A. graduated beaker B. pipette C. test tube D.

A sample of a certain material has a mass of 2.03 x 10-3 g. calculate the volume of the sample, given the density is 9.133 x 10-1 g/cm3.

What happens to a reactant molecules when forming product molecules