What kind of bonding exists in substances that consist of discrete molecules? ionic covalent hydrogen bonding intermolecular
tert-butylamine has a pKa of 10.83. At what pH will t-butylamine have a charge and what will the charge be? pH 12, +1 pH 1, -1 pH7, +1 pH 1, +2
Which term refers to the number of protons in an atom of an element? atomic number period average atomic mass symbol
Choose the proper coefficients for each substance to balance this equation. underline ( )C_(2)H_(4)(g)+underline ( )O_(2)(g)arrow underline ( )CO_(2)(g)+underline ( )H_(2)O(g) 2,3,4,2 2.2.4.2 1,3,2,2 1,1,2,2
Which polyatomic ion formula and name is NOT correctly paired? 1. CN^- cyanate 2. NO^- nitrate 3. ClO^- chlorate 4. SO42^- sulfate 5. CrO42^- chromate
Each year, the science club puts on a science show for the stud demonstrations to show properties of metals. For one property pin. Which property of metals is Luis most likely going to demonstr luster opacity conductivity malleability
The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56.Which comparison is best supported by this information? They are in the same group because they have similar atomic masses but they are in different periods because they have different chemical properties. They are in the same group because they have similar chemical properties but they are in different periods because they have very different atomic numbers. They are in the same group because their atomic numbers are each multiples of four, but they are in different periods because they have different chemical properties. They are in the same group because they have similar atomic masses but they are in different periods because they have very different atomic numbers.
Consider the following unbalanced equation: N_(2)(g)+H_(2)(g)arrow NH_(3)(g) How many moles of H_(2) will be required to react exactly with 3.83 mol N_(2) HOW DO WE GET THERE? What is the balanced equation for this reaction (in lowest multiple integers)? square N_(2)(g)+square H_(2)(g)arrow square NH_(3)(g)
__ is/are types of chemical reaction. Synthesis reaction Redox reaction Precipitation reaction All of the choices
All organic compounds contain: Alkene Carbon Chlorine Nitrogen
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
