What volume (in L) of 1.20 M FeCl₂ would be required to obtain 0.850 moles of Cl⁻ ions?

Determine the mass in grams of 7.75 × 10²¹ atoms of carbon. (The mass of one mole of carbon is 12.01 g.)

What is the oxidation number of S in the compound Na₂S₂O₅?

In this reaction:     If 2.34 moles of Mg react with 3.56 moles of I₂, and 1.76 moles of MgI₂ form, what is the percent yield (in %)?

If 365 mL of 0.285 M MgCl₂ is added to 235 mL of 0.215 M (NH₄)₃PO₄, how many moles of Mg₃(PO₄)₂ precipitate will be formed? The balanced equation is:  

Calculate the molarity of a 10.0% (w/w) CaCl₂ solution. The density of the solution is 1.0835 g/cm³.

Match each symbol with the correct description.

Marketing research projects center around two different types of information–Qualitative and Quantitative. Recommendations from __________________ research enables the analyst to find associations between marketing variables and outcomes, and identify causal relationships. Recommendations from __________________ research enable the analyst to discover the “why” behind actions. 

The number 0.0509 has ___ significant figures.

Convert 5.01 milliliters to microliters. (Just put the number and no units.)