The type of buffer that binds hydrogen ions and removes it from solution as its concentration goes up is a square buffer.
Fill in the Blank Question The combined concentration of all solutes in a solution determines the square square of the solution. Need help? Review these concept resources.
Fill in the Blank Question An aqueous solution with a lower concentration of solutes will have a square concentration of free water molecules. Need help? Review these concept resources.
An element has the following properties: it is a solid at room temperature It is brittle It does not conduct electricity It can bond with Na and with 0 This element should be classified as a __ a metal a non-metal a metalloid
What is the number of neutrons (n), for Kr-81 40 36 45
CH_(2)-CH_(3) CH_(3)-CH_(2)-C-N-CH_(2)-CH_(2)-CH_(2)-CH_(3) Spell out the full name of the compound. square
If 588 grams of FeS_(2) is allowed to react with 352 grams of O_(2) according to the following unbalanced equation, how many grams of Fe_(2)O_(3) are produced? FeS_(2)+O_(2)arrow Fe_(2)O_(3)+SO_(2) A 4268 B 3208 C 8808 D 3528 E 1108
Question 2 What is the correct group name for the element Sn? (Reference p.168, Figure 3.38 of your textbook.) A Noble Gases A B ) Carbons C Lanthanides D (D) Actinides 1 P
What is the name of the compound Al_(4)C_(3) Multiple Choice silver carbonate arsenic carbide aluminum carbide argon carbonate
A P-P linkage would be classified as what type of bonding interaction? polar covalent nonpolar covalent metallic homogeneous ionic
$2N_{2}O_{5}(aq)\rightarrow 4NO_{2}(aq)+O_{2}(g)$ Which choice represents the relative rate expression between $N_{2}O_{5}$ and $NO_{2}$ ? 1 $Rate=-\frac {1}{2}\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {1}{4}\frac {\Delta [NO_{2}]}{\Delta t}$ 2. $Rate=\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {\Delta [NO_{2}]}{\Delta t}$ 3 $Rate=-\frac {1}{4}\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {1}{2}\frac {\Delta [NO_{2}]}{\Delta t}$ 4 $Rate=2\frac {\Delta [N_{2}O_{5}]}{\Delta t}=4\frac {\Delta [NO_{2}]}{\Delta t}$
At high temperatures bromine molecules can dissociate into bromine atoms. For the reaction $Br_{2}(g)\rightleftharpoons 2Br\cdot (g)$ $K_{p}=2.48\times 10^{-3}$ at $1650^{\circ }C$ A 5.00 L vessel at $1650^{\circ }C$ is filled with $Br_{2}(g)$ at an initial pressure of 6.00 atm and allowed to come to equilibrium. What will be the pressure (in atm) of $Br\cdot (g)$ at equilibrium?
The boiling point of bromine is $59^{\circ }C$ Which of the following best predicts the boiling point of iodine monochloride, a polar compound? Higher than $59^{\circ }C$ because dipole-dipole interactions in iodine monochloride are stronger than dispersion forces in bromine. Lower than $59^{\circ }C$ because ionic bonding in bromine is stronger than covalent bonding in iodine monochloride. Lower than $59^{\circ }C$ because dipole-dipole interactions in iodine monochloride are weaker than in bromine. Higher than $59^{\circ }C$ because ionic bonding in iodine monochloride is stronger than H-bonding in bromine.
Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of $0.0026M\cdot s^{-1}$ $2NH_{3}(g)\rightarrow N_{2}(g)+3H_{2}(g)$ Suppose a 300. mL flask is charged under these conditions with 450.mmol of ammonia. How much is left 100 s later? You may assume no other reaction is important. Be sure your answer has a unit symbol,if necessary, and round it to the correct number of significant digits. $\square $
Cleaning chemicals are generally not health hazards True False
Identify the molecule or molecules containing polar covalent bonds. HF CsF $Br_{2}$ KH $N_{2}$
A saturated solution holds the maximum amount of solute under the solution conditions. True False
Copper, a good conductor, has __ electron(s) in its valence shell. a. 1 b. 3 c. 4
To identify a chemical's hazards, check its: Smell Color MSDS
A 0.788 mole sample of ideal gas at $12^{\circ }C$ occupies a volume of 4.25 L. What is the pressure of the gas? $\square $
