What is the percent of carbon-14 remaining after two half-lives?

If 1.00 mol of argon is placed in a 0.500-l container at 22.0? c, what is the difference between the ideal pressure (as predicted by the ideal gas law and the real pressure (as predicted by the van der waals equation? for argon, a=1.

How many atoms are in 5 moles of phosphorous (P) ?

Which is a way that the elements are groupef on the periodic table

In which of the following pure substances would hydrogen bonding be expected? a. cyclobutane b. propanoic acid c. acetone d. All of the Above

1. What is polarity? a. An ionic bond with unequal electrons b. An ionic bond with equal electrons C. A molecule with equal electrons d. A molecule with unequal electrons

What is the molarity of a solution that has 548 grams of HCl dissolved in 1.50 l water?

Steve puts some cheddar cheese in a pan on the stove and starts to melt it. After a little while, there is a layer of oil floating on top of the cheese. From the way the cheese melted, Steve knows it is a A Element B Solid C Mixture D Pure Substance.

Which experimental feature of the MALDI-MS technique allows the separation of ions formed after the adduction of tissue molecules? A) Distance travelled by ions depends on the ion charge. B) Velocity of ions depends on the ion mass-to-charge ratio.

Which temperature is required for the cell potential to be the standard cell potential? A) - 273°C B) 100°C C) 25°C D) 0°C

1. the purpose of the aqueous solutions in a galvanic cell is to? a. provide ions to be oxidized and reduced b. provide a path for the free flow of electrons c. maintain charge balance in the cell d. correct any volume changes in the cell 2.