MOLARITY
What is molarity?
is the number of moles of solute dissolved in one liter of solution.
What are oxidation numbers?
The oxidation number is basically the count of electrons that atoms in a molecule can share, lose or gain while forming chemical bonds with other atoms of a different element.
What is the Lewis structure for Methane (CH4)?
The structure shows a central carbon atom (C) with four single bonds, each connecting to a hydrogen atom (H).
Whats the difference between a solvent and a solute?
Solute (the smaller amount) is whats dissolved in a solvent.
Solvent (the larger amount) is what dissolves a solute.
What is the oxidation state of chlorine in KCl?
-1
What is the Lewis structure for Carbon Dioxide (CO2)?
This linear molecule features a central carbon atom forming two double bonds, one to each of the two oxygen atoms on either side.
A chemist needs to prepare 6.00L of a 0.250M solution of potassium permanganate (KMnO4). What mass of KMnO4 does she need to make the solution?
237.06 grams
What is the oxidation number of Cl in KClO3
+5
What is the Lewis structure for Ammonia (NH3)?
The structure shows a central nitrogen atom (N) bonded to three hydrogen atoms (H) and has one lone pair of electrons on the nitrogen.
How many grams of Ca(OH)2 are needed to produce 500 ml of 1.66 M Ca(OH)2 solution?
61.50 grams
What is the oxidation number of V in V2O7-4
+5
What is the Lewis structure for Acetylene (C2H2)?
The structure is H-C≡C-H.
What is the molarity of 650 ml of solution containing 63 grams of NaCl?
1.66 M
What is the oxidation number of Pt in H2PtCl6
+4
What is the Lewis structure for the Ammonium ion (NH4+)?
This polyatomic ion has a +1 charge. It features a central nitrogen atom forming single bonds to four surrounding hydrogen atoms.