Caleb Adams
Purchase College, State University of New York
Chemistry
Chemistry teacher | Experienced educator in USA
As a Chemistry enthusiast with a degree from Purchase College, State University of New York, my passion lies in unraveling the mysteries of the molecular world. I bring a wealth of knowledge and practical experience to every tutoring session. Whether it's demystifying chemical reactions or clarifying complex concepts, I'm dedicated to fostering a deep understanding of Chemistry. Let's embark on a journey of scientific discovery together – where questions are welcomed, and understanding is the destination.
Questions
- A certain saturated hydrocarbon effuses about half as fast as methane, #CH_4#. What is the molar mass, in g/mol, of this hydrocarbon ?
- A volume of saline solution weighed 25.6 g at 4 degrees C. An equal volume of water at the same temperature weighed 24.5 g. what is the density of the saline solution?
- How many more molecules? Answer in units of molec?
- Is the following acid-base reaction Arrhenius, Bronsted-Lowry, or Lewis: Ag+ + 2 NH3 --> Ag(NH3)2+
- How do we assess whether an acid is strong in aqueous solution?
- The thermal effect of the reaction 3cao+p2o5 =ca3(po4)2is (-739kj) Define delta hf of calcium phosphate (-4137.5kj/mole)?
- What is the energy of a photon that emits a light of frequency #6.42 * 10^14# #Hz#?
- What are some examples of empirical formulas?
- What is the mass in kg of butane in a #"20 L"# cylinder with a pressure of #"0.963 atm"# and a temperature of #27^@"C"#?
- If a starting compound has more free energy than the product and energy is released, this is an endergonic reaction. and WHY? A) True B) False
- In the reaction #Mg(s) + 2H_2O(l) -> Mg(OH)_2(s) + H_2(g)#, what is the oxidation state of #Mg# in #Mg(s)#?
- How do you calculate the oxidation number of an element in a compound?
- How can chemical properties be observed?
- You have three covalent compounds with three very different boiling points. All of the compounds have similar molar mass and relative shape. Explain how these three compounds could have very different boiling points ?
- What is the product when you put nitrobenzene and Tin in dilute HCl? How to predict this?
- Why are linear hydrocarbons LESS volatile than their branched isomers?
- What factors affect how fast a solid dissolves in a solvent?
- An aq soln of #NaH_2PO_4# is treated with a mixture of ammonium & magnesium ions to precipitate #Mg(NH_4)PO_4. 6H_2O# & is heated to #Mg_2P_2O_7# which is weighed. A soln of #NaH_2PO_4# gives 1.054 g of #Mg_2P_2O_7#. What's original weight of #NaH_2PO_4#?
- Draw and name all structural isomers formed by monochlorination of (CH3)3CH?
- How would you balance the following equation: HCl+ K2CO3 --> CO2+KCl+H20?