Provide the condensed structures of two structurally isomeric amines that contain two carbons. Express your answers as chemical formulas separated by a comma. square
Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16% What is the amu of the other isotope? 107.1 amu 106.9 amu 106.7 amu 107.3 amu
Using atomic notation, indicate the isotope having 11p^+,12n^0 and 11 e^- Na Na+ Na2+ Mg Mg2+
What organic solvent will you extract the product into? Dichloromethane Diethyl Ether Ethyl Acetate Brine (Aqueous NaCl)
Balance the following chemical equation. Do not include states of matter. Al+H_(2)Clarrow AlCl_(3)+H_(2)
Twelve different pictograms are used to provide a visual cue regarding chemical hazards True False
The usual oxidation number of oxygen in its compounds is __ 2 -2 -1
Which of the following ions of titanium would have the same electron configuration as Ar? & Answer: A & mathrm(Ti)^+ B & mathrm(Ti)^2+ C & mathrm(Ti)^3+ D & mathrm(Ti)^4+
Value: 4 Which of the following represents the number of the molecules, of the type indicated, is present as a reactant or product of the chemical reaction shown? a. Coefficient b. Subscript c. Symbol d. Product
16.56 If solution of HF (K_(a)=6.8times 10^-4) has a pH of 3.65, cal- culate the concentration of hydrofluoric acid.
A synthetic lubricant presently used with ternary blends containing HCFCs is known as __ Alkylbenezene Polyalkylene Polywannacracker Polyolester
Which of the following equations is correct? $TC=FC+VC$ $TC=FC-VC$ $TC=MC-VC$ $TC=FC\times VC$
vphich pure substance can be classified as an element? $H_{2}$ $NO_{3}$ NaCl $H_{2}SO_{4}$
What is the approximate pH at the equivalence point of a weak acid- strong base titration if 25 mL of aqueous HF requires ; 30.00 mL of 0.400 M NaOH? $K_{a}HF=6.76\times 10^{-4}$ a. 1.74 b. 5.75 c. 8.25 d. 12.26
Question 3 of 10 What property is used to calculate the pH of a solution? A. The hydrogen ion concentration in ppm B. The hydrogen ion concentration in $mg/dL$ C. The hydrogen ion concentration in $mol/L$ D. The hydrogen ion concentration in $mol/kg$
How many valence electrons are in the acetate ion $C_{2}H_{3}O_{2}^{-}$ $\square $
Which statement would be the most useful for deriving the ideal I gas law? Volume is directly proportional to the number of moles. Volume is inversely proportional to the temperature. Pressure is directly proportional to the volume. Pressure is inversely proportional to the number of moles.
Hydrogen sulfide is: A) Odorless B) Colorless C) Not flammable D) Red in color
Question 18 of 20 What is the name for $Mg_{3}N_{2}$ A. Magnesium nitride B. Magnesium dinitride C. Trimagnesium dinitride D. Dimagnesium trinitride
Give the IUPAC name for the organic compound shown: $CH_{3}-CH-CH-CH_{2}-COOH$ chloro-isopropyl alcohol 3-chloropentanoic acid 3-chloropentanone 2-chloropentanal
