Calculate the value of ΔGº for the following processes: A.

Question Calculate the value of ΔGº for the following processes: A. AgI(s) → Ag  (aq) I− (aq)     Keq = 8.3 × 10−17B. CdS(s) → Cd2 (aq) S2− (aq)  Keq = 8.0 × 10−27

A block of magnesium has a mass of 18.7 g

Question A block of magnesium has a mass of 18.7 g and a volume of 3.09 cm3. What is the density of magnesium in g/cm3?

Enter the symbol of a sodium ion, Na style=”color:rgb(51,51,51);”> , followed

Question Enter the symbol of a sodium ion, Na style=”color:rgb(51,51,51);”> , followed by the formula of a sulfate ion, SO42−. Separate the ions with a comma only—spaces are not allowed.

1) Place one hand near the bottom of the cup

Question 1)    Place one hand near the bottom of the cup and one hand over the top of the cup (covering the opening).2)    Carefully shake the cup for 10 seconds, keeping your hand over the top of the cup, preventing the candium atoms (candy) from escaping. 3)    Gently pour out the candium atoms and count the number of pieces with the print side up. This is the number of decayed atoms. 4)    Record your data in Table 1. 5)    Return only the candium atoms that landed with the print side down (the remaining radioactive atoms) to the plastic cup.6)    Repeat this procedure 5 more times, representing a total of 6 half-lives, or until all of the radioactive atoms have decayed, which ever comes first.7)    Calculate the fraction of:a.     Fraction of parent atoms (radioactive isotopes) using the number of undecayed radioactive atoms divided by the initial number of radioactive candium atoms (50).b.     Fraction of daughter atoms (decayed isotopes) using the number of decayed atoms divided by the initial number of radioactive candium atoms (50). c.     Simplify these fractions if you can (e.g. 25/50 = 1/2). 8)    Create a graph of your data using the half-life as your x-axis (horizontal line) and the number of atoms (both parent (radioactive) and daughter (decayed)) as your y-axis (vertical). This will produce a graph with two exponential curves, one showing a) the nuclear decay of candium and the other showing b) the production of daughter atoms over 6 half-lives.Table 1 Half-life # of Undecayed Candium Atoms (Parent atoms) Fraction of Parent atoms (# parent atoms/50) # of Decayed Candium Atoms (Daughter atoms) Fraction of Daughter atoms (# daughter atoms/50) 0 50 50/50 0 0/50 1 2 3 4 5 6 *This lab was adapted from The Science House’s Radioactive Decay of Candium – Experiment 27. Graph: Insert your graph here.Lab Questions: 1)    Explain what a half-life is.2)    At the end of two half-lives, what fraction of the atoms had not decayed?3)    There are three types of radiation discussed in the Reactions and Changes – Nuclear Chemistry: An Introduction article. What are they and how does each type of radiation result in nuclear changes?4)    Radon is a naturally occuring radioactive gas that comes from the radioactive decay (transmutation) of uranium and it is found in certain soils. Because it is heavier than air, it tends to build up in the lower levels of households, like basements. Radon and its decay products can pose serious health hazards to people that are exposed to them. When radon-222 undergoes alpha decay, it transmutates into what daughter nucleus? 5)    Some fossil bones containing 1/32 of their original amount of carbon-14 are found. How many half-lives have passed? How old are the bones? (HINT: The half-life of carbon-14 is 5,730 years. If 1/8 of the original amount of carbon-14 was present, 1/8 = 1/23 or 1/(2x2x2), therefore 3 half-lives would have passed and therefore, the bones would be 5,730 years x 3 = 17,190 years old)6)    A 15 g sample of iodine-131 is giving off β radiation. The amount of iodine that remains is measured every day at 12:00 pm and recorded in a table used to produce the graph below. Using the graph below, locate the spot where the original amount (15 g) has dropped to half of its original value. How many days is this? (This is the half-life)

Your initial post in the discussion this week consists of

Question Your initial post in the discussion this week consists of two parts. First, choose a molecule used in healthcare, industry, or found in a natural source and discuss the importance of this molecule. Be sure to include at least one outside source and make sure to follow APA citation guidelines.In the second part of your initial post, we will be practicing naming ionic and covalent compounds as well as polyatomic ions. To begin, give the chemical formula for each of the following: A covalent compound containing no more than two types of elements, an ionic compound no more than two types of elements, and an ionic compound containing a polyatomic. Be sure that these compounds are valid (for example, the charges balance out in the ionic compound) and that the subscripts do not exceed 10.

ATTACHMENT PREVIEW Download attachment mse hw 1.PNG

Question ATTACHMENT PREVIEW Download attachment mse hw 1.PNG

On a table in front of you are two beakers,

Question On a table in front of you are two beakers, each containing 100.0 mL of a clear colorless liquid. One beaker is labeled lead (II) nitrate and the other is labeled potassium iodide. When you pour the contents of one beaker into the other, and immediately a solid yellow precipitate, PbI2 forms. The other product is the soluble compound KNO3.

The percent chloride in an unknown sample may be determined

Question The percent chloride in an unknown sample may be determined by gravimetric methods. Suppose a 0.6789g sample of an unknown chloride sample was dissolved and AgCl is precipitated by adding AgNO3 solution. The precipitate was filtered, ignited, and found to weigh 0.3333g. What was the percent chloride in the sample

During the experiment a student precipitated and digested the BaSO4.

Question During the experiment a student precipitated and digested the BaSO4. After allowing the precipitae to settle, they added a few drops of BaCl2 solution, and the previously clear solution became cloudy. Explain what happened.

I’m confused why the correct answer has ΔG = -RTln(Keq)

Question I’m confused why the correct answer has ΔG = -RTln(Keq) as I thought this equation was for ∆G°, so knowing that ∆G°=0 does not mean we know that ∆G=0 also. Please see explanation of what I mean here: https://www.adriandingleschemistrypages.com/ap/making-sense-of-delta-g-and-delta-g-standard-when-it-comes-to-equilibrium/ The question is from the official AAMC guide to the MCAT exam practice questions. ATTACHMENT PREVIEW Download attachment Screen Shot 2019-08-25 at 4.33.34 PM.png What thermodynamic and chemical changes (if any) occur during aspartate transamination (Figure 1)? A. Since AG

What is the correct answer for this question? style=”color:rgb(45,59,69);”>Scientific laws

Question What is the correct answer for this question? style=”color:rgb(45,59,69);”>Scientific laws differ from scientific theories in that:a) laws explain observations and theories describe observations.b) Scientific Laws describe an observable phenomena.Laws describe.. Science theories explain them.c) theories eventually become laws.d) No difference exists. Laws and theories have the same meaning.

What is the number of 1.5 teaspoon doses of a

Question What is the number of 1.5 teaspoon doses of a liquid medication in a 250 mL bottle? (Given 1 tsp = 5 mL.)a) 33 dosesb) 125 dosesc) 167 dosesd) 250 doses

14. Assuming that no equilibria other than dissolution are involved,

Question 14. Assuming that no equilibria other than dissolution are involved, calculate the molar solubility of each of the following from its solubility product: (a) Ag2SO4 (b) PbBr2 (c) AgI (d) CaC2O4∙H2O

The question for the problem is below! Can someone please

Question The question for the problem is below! Can someone please explain this with answers! src=”/qa/attachment/9519236/” alt=”Chemistry HW.png” /> ATTACHMENT PREVIEW Download attachment Chemistry HW.png VA HW01 CH 101 – CH 101 x Homework Help – Q

24. “Thermite” reactions have been used for welding metal parts

Question 24. “Thermite” reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is Fe2 O3(s) 2Al(s) ⟶ Al2 O3(s) 2Fe(s). Is the reaction spontaneous at room temperature under standard conditions? During the reaction, the surroundings absorb 851.8 kJ/mol of heat.

A 1.1000 gram hydrate sample chosen from Na2CO3∙10H2O, AlCl3∙6H2O, MgCl2∙6H2O

Question A 1.1000 gram hydrate sample chosen from Na2CO3∙10H2O, AlCl3∙6H2O, MgCl2∙6H2O and BaCl2∙2H2O was heated and found to lose 0.4919 gram of H2O. (1) Show the calculation of the % H2O in the unknown hydrate sample. (2) Show the calculation of the % H2O in each of the hydrate compounds and identify the unknown hydrate from the list.Atomic weights: H = 1.008, O = 16.00. MWs: Na2CO3∙10H2O = 286.15, AlCl3∙6H2O = 241.43, MgCl2∙6H2O = 203.301 and BaCl2∙2H2O = 244.462

If the density of vinegar is (1.00 g/mL), how would

Question If  the density of vinegar is (1.00 g/mL), how would I solve this problem? ATTACHMENT PREVIEW Download attachment LabWeek4222.PNG

2. For each of the following situations during the density

Question 2.  For each of the following situations during the density of water experiment, determine if the mistake would give a falsely high or falsely low density for water. For each situation, assume everything else in the experiment is done correctly. Note: It may be helpful to try some hypothetical calculations.  a. When weighing a volumetric flask full of water, a student does not notice that the outside of the flask is wet.  HIGH LOW UNCHANGED  Explanation:    b. When weighing an empty beaker, a student does not notice that there is some water inside.  HIGH LOW UNCHANGED  Explanation:

An archaeologist has found an oak bowl that has 31.25%

Question An archaeologist has found an oak bowl that has 31.25% 14C of modern oak. What is the age of the artifact? (The half-life for 14C is 5700 years.)

The half-life of Sr-90 is 28.8 years. If 50.0 g

Question The half-life of Sr-90 is 28.8 years. If 50.0 g of Sr-90 is initially synthesized, how long will it take for the mass of the sample to be reduced to 1.56 g?

In the electrolysis of an aqueous solution containing 1M FeCl3

Question In the electrolysis of an aqueous solution containing 1M FeCl3 and 1M CuBr2, what is the initial product formed at the anode?

The post Calculate the value of ΔGº for the following processes: A. appeared first on Smashing Essays.

Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"