Explanation: In order to name a compound, we must first figure out whether it is ionic or covalent. Ionic compounds can be divided into three categories: metal + nonmetal, meta+ polyatomic ion, polyatomic ion+ polyatomic ion, polyatomic io...
Which electron configuration represents the electrons in an atom of sulfur in an excited state?
(1) 2 – 8 – 6
(2) 2 – 7 – 7
(3) 2–8– 7
(4) 2–7– 8
Answer :2) 2-7-7
Explanation: We must first look at the Periodic Table at the Reference Table, and find Sulfur. Sulfur's electron configuration is 2-8-6 according to the Reference Table. An excited state is a state in which an electron jumps to a higher energy level, while the g...
What is the color of bromcresol green indicator in a solution with a pH value of 2.0?
Solution: An indicator allows us to figure out the pH range of the solution and whether it is acidic or basic. To do this problem, we need to look at Table M of the Regent Reference Table, Common Acid–Base Indicators.
According to the table, bromcresol green, has a pH range for co...
The BA-Md program at Brooklyn college is an eight year program that includes four undergraduate years at Brooklyn college and four more years at SUNY Downstate medical school.
This program is amazing for saving future doctors a ton of money, since CUNY Brooklyn is a city college with a city tuition and SUNY Downstate is a state medical school with reduced tuition as well. The program also has a guaranteed admission to a...
Will precipitation occur when the following solutions are mixed? If so, write a balanced chemical equation for the reaction.
(a) Na2CO3 and AgNO3, (b) NaNO3 and NiSO4, (c) FeSO4 and Pb(NO3) 2
In order for precipitation occur, we must first write out the products of each reaction. These are double replacement reactions, where we can use the following formula: AB+CD --> AD + CB to predict the products. We also need to remem...
A chiral center is a carbon that is attached to 4 different groups.
We should start by drawing out molecules, and adding the necessary number of hydrogens to each carbon. Remember a carbon wants to always have 4 bonds. Therefore, if we see a carbon with 2 bonds, we attach 2 more hydrogens and so f...