Write balanced half-reactions for the following redox reaction: BiO_(3)^-(aq)+3H_(2)O(l)+2I^-(aq)arrow Bi^3+(aq)+6OH^-(aq)+I_(2)(s) reduction: square oxidation: square
Which of the following is a common base? H_(2)CO_(3) H_(2)SO_(4) NaOH
Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite. HSO_(4)(aq)+LiOH(aq)arrow H_(2)O(l)+LiSO_(4)(aq) H_(2)SO_(4)(aq)+LiOH(aq)arrow H_(2)O(l)+Li_(2)SO_(4)(aq) H_(2)SO_(3)(aq)+2LiOH(aq)arrow 2H_(2)O(l)+Li_(2)SO_(3)(aq) H_(2)S(aq)+2LiOH(aq)arrow 2H_(2)O(l)+Li_(2)S(aq) HSO_(3)(aq)+LiOH(aq)arrow H_(2)O(l)+LiSO_(3)(aq)
Select the correct VSEPR shape for the molecular compound. CF_(4) square v PCl_(3) square CH_(2)S square v CO_(2) square SeF_(2) square v
7. What volume of 0.050 M HCl solution can be made by diluting 250 mL of 10.0 M HCl? Explain how you'd make this solution:
Which of the following has the most unpaired valence electrons: an atom of hydrogen, an atom of sulfur, an atom of chlorine, or an atom of carbon? Sulfur Neon Chlorine Carbon
Question 4(Multiple Choice Worth 3 points) (08.02 LC) Which statement : is true about molarity and percent by mass? Both are ratios of the amount of solute over the amount of solution. They are ratios of the dilution over the concentration. They are inversely related. Both measure dilution.
A 750.0 mL solution contains 5.00 g of NaOH. If the molar mass of NaOH is 39.9969g/mol . what is the molarity of the solution? 0.0891 M NaOH ) 0.167 M NaOH ) 1.25 M NaOH 5.98 M NaOH
Question 2(Multiple Choice Worth 3 points) (08.02 MC) A 0.420 M Ca(OH)_(2) solution was prepared by dissolving 64.0 grams of Ca(OH)_(2) in enough water.What is the total volume of the solution formed? 1.07 liters 1.23 liters 2.05 liters 2.18 liters
The dilution process requires that more solute is added to the solution. True ) False
Before you go, which type of molecule would you choose to be the anode in a lithium battery? a) The metal with the most negative potential b) It does not matter since lithium's potential is so negative c) The metal with the most positive potential d) Another lithium compound
Part I: Unit Conversions.Show all work (known and unknown, and dimensional analysis - including units! Write your answers in the boxes provided. Unit Test: Dimensional Analysis and Mole Convers 1. Find the number of minutes in 25 years, assuming that $1year=365days$ K:25 years 2. The driving distance from Spokane to Seattle is 479,000 meters. Convert this distance to miles given $1m=100cm,1in=2.54cm,12in=1ft,$ and $1mi=5280ft$ $\square $ Part II: Mole Conversions . Show all work (known and unknown, and dimensional analysis - including units! Write your answers in the boxes provided. 3. A sample contains $9.2\times 10^{22}$ atoms of beryllium (Be)How many moles is this? $\square $ 4. The formula for Aluminum Carbonate is $Al_{2}(CO_{3})_{3}$ What is the molar mass of aluminum carbonate? $\square $
The following reaction is an example of a substitution reaction. $2Na+Cl_{2}\rightarrow 2NaCl$ TRUE FALSE
Heterogeneous mixtures are observed to be uniform throughout. True False
What are some examples of foods that need an emulsifier mayonnaise chocolate ice-cream oil water various salad dressings.
27. The contents of a drum have not been identified. You notice crystalline material on top of the drum, you should treat the contents as: A. shock-sensitive waste. B. nearly empty. C. containing chlorinated solvent. D. containing caustic materials.
A weak acid is a dilute acid that is not very powerful. True False
What is a crucial aspect of chemical optimization? Adjusting team member speed Pre-treating the vehicle Using water reclamation tanks Ordering new equipment
Why is chemistry sometimes referred to as the "central science?" Because we need to know it to survive as a species. Because it is interconnected with many other STEM disciplines. Because it incorporates principles from math and physics. Because there are many subdisciplines of science that rely on chemistry.
Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop o dishwashing detergent is added near it? Soap is a surfactant that increases the intermolecular forces of water allowing the paperclip to continue to float. Soap makes the water less viscous making the paperclip sink. Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink. Soap makes the water more viscous allowing the paperclip to continue to float.
