Spontaneous reactions __ are always exothermic always take place at a rapid rate always release free energy always result in increased disorder of the system
Why does a higher temperature cause a reaction to go faster? Collisions occur with greater energy only. There are more collisions per second only. There are more collisions per second and the collisions are of greater energy. There are more collisions per second or the collisions are of greater energy.
What is the molar solubility of Ni_(3)PO_(4) in a 1.00L solution of 0.00300M solution of Ni^+ Ni_(3)PO_(4)Ksp=4.5^ast 10^-18 Answer
7. Hemiacetals are? a. produced on the oxidation of a carboxylic acid b. result of the reaction between an aldehyde and a ketone c. are produced when an ether reacts with a ketone
Which of the following functional groups is present in acetic acid? hydroxyl group sulfhydryl group carbonyl group carboxyl group
Which of these drinks contain the most alcohol? A 12 ounce beer A 5 ounce glass of wine They all contain equal amounts of alcohol A 1.5 ounce shot of 80 proof whiskey
Strong bases dissociate only slightly in water. True False
Use the balanced equation, 4Al+3O_(2)arrow 2Al_(2)O_(3) to answer the following question. How many grams of O_(2) are needed to react completely with 14.3 g of Al? Be sure your answer has the correct number of significant figures. square g O_(2)
4.2 Write the symbols for the following elements: a. oxygen b. lithium c. uranium d. titanium e. hydrogen f. chromium g. tin h. gold
Identify the spectator ions for the reaction between calcium nitrate and sodium sulfate The balanced molecular equation is Ca(NO_(3))_(2)(aq)+Na_(2)SO_(4)(aq)arrow CaSO_(4)(s)+2Na NO3 (aq) Ca^2+ and NO_(3)^- Na^+ and NO_(3)^- Na^+ and SO_(4)^2- Ca^2+ and SO_(4)^2-
During brazing, which of the following may present health hazards? Zinc Beryllium Cadmium or phosphorus All are correct
Which particles determine the affinity of atoms to each other and thus the likelihood of a chemical reaction? Protons Neutrons Electrons Nucleus
Get It? Explain how the ion $HCO_{3}^{-}$ can be both an acid and a base. Describe what happens in the forward and reverse reactions when ammonia is dissolved in water. Identify the conjugate acid, the conjugate base, and the two conjugate acid-base pairs.
Write the net ionic equation between $Cr_{2}(SO_{4})_{3}(aq)$ and $Ba(OH)_{2}(aq)$ Be sure to include the states of matter. $\square $
Sequence the following equations in the steps of the ionization of phosphoric acid in the correct order. $HPO_{4}^{2-}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+PO_{4}^{3-}(aq)$ $H_{3}PO_{4}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+H_{2}PO_{4}^{2-}(aq)$ $H_{2}PO_{4}^{-}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+HPO_{4}^{-}(aq)$
When a halide leak detector is used, what color will a blue flame turn when it comes in contact with leaking refrigerant vapors? A. blue B. green C. white D. orange
What kind of Isomers are 1-butene and 2-butene (pictured above)? stereoisomers structural isomers geometric isomers not isomers
Write the balanced NET ionic equation for the reaction when $Cr(NO_{3})_{3}$ and $Li_{2}CO_{3}$ are mixed in aqueous solution. If no reaction occurs, simply write only NR. Be sure to include the proper phases for all species within the reaction.
What type of elements are the lanthanides and actinides? a mostly nonmetals and a few metals b mostly metals and a few nonmetals C all nonmetals d all metals
Describe what happens in the forward and reverse reactions when ammonia is dissolved in water. Identify the conjugate acid, the conjugate base, and the two conjugate acid-base pairs.
