Iodine has 53 protons and 74 neutrons: what is the atomic number? What is the atomic mass?

2) Compound A is neutral and Compound B is acidic. Both are water-insoluble solids. A and B are dissolved in dichloromethane (DCM) and extracted with aqueous base. The layers are then separated.

When substances form liquid solutions, what two factors are involved in determining the solubility of the solute in the solvent? Entry field with incorrect answer The tendency towards randomness drives the solution process.

A sample of oxygen gas has a volume of 150. milliliters at 300 k. if the pressure of the sample is held constant and the temperature is raised to 600 k, the new volume of the sample will be

The combined gas law sets up a relationship between which of the following? A. pressure and temperature only B. volume and temperature only C. volume and pressure only D. pressure, volume, and temperature

Which element is identified by the chemical symbol C

For the reaction H2SO4 + 2Na2OH4 - > Na2SO4 + 2H2O If you want to make 5 moles of Na2SO4, how many miles of H2SO4 do you need? A) 5 B) 10 C) 12 D) 2

Which element from the periodic table has four valence electrons

Describe the structure and bonding of a thermosoftening polymer and explain why they melt when heated.

How many F atoms are there in 0.035 mol CF4

What type of reaction does the equation below represent? N2 + 3H2 - > 2NH3 a. synthesis b. decomposition c. single replacement d. double replacement