How would you prepare the following solutions? Unless stated otherwise, assume that the solvent is purified water and that you will dissolve the solute in a lesser amount of solvent and then “bring the solution to volume”

CuSO₄ FW 159.61

NaCl FW 58.44

CaCl FW 111.0

Na₂SO₄^. 10H₂O FW 322.04

1. 100 ml of AgNO₃ at 2 g/ml

2. 250 ml of NaCl at 2 mg/ml

3. 0.75 L of CuSO₄ at 50mg/ml

4. 250 ml KCl at 20 mg/ml

5. 50 ml of 0.1% (w/v) AgNO₃

6. 500 ml of 1%( w/v) NaCl

7. 10 ml of 6% (w/v) CuSO₄

8. 200 ml of 2% (w/v) KCl

9. 25ml of 20% (v/v) Methanol

10. 2L of 70% (v/v) Ethanol

11. 10 ml of 0.2% (v/v) DMSO

12. 50 ml of 3% (v/v) Propanol

13. 250 ml 12 mM CuSO4

14. 500 ml 0.25M NaCl

15. 500 ml 25mM CaCl

16. 100 ml 300 mM Na₂SO₄

17.100 ml of 5:3:2 ethylene: chloroform: isoamyl alcohol

18. Convert 50 ppm to g/L

19. Convert 50 ppm to mg/L

20. Convert 5 ppb to ul/l

21. Convert 3 ppm to l/ml

22. Convert 350 ppm to ml/L

23. 300 ppb Cadmium (solid)

EXPLAIN STEP PLEASE

Depreciation Methods

Gruman Company purchased a machine for $220,000 on January 2, 2016. It made the following estimates:

In 2016, Gruman uses the machine for 1,800 hours and produces 44,000 units. In 2017, Gruman uses the machine for 1,500 hours and produces 35,000 units. If required, round your final answers to the nearest dollar.

Required:

Compute the depreciation for 2016 and 2017 under each of the following methods:

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Activity method based on hours worked

Activity method based on units of output

For each method, what is the book value of the machine at the end of 2016? At the end of 2017?

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Activity method based on hours worked

Activity method based on units of output

If Gruman used a service life of 8 years or 15,000 hours and a residual value of $10,000, what would be the effect on the following under the straight-line, sum-of-the-years'-digits, and double-declining-balance depreciation methods?

Depreciation expense

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Book value

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Depreciation Methods Gruman Company purchased a machine for $198,000 on January 2, 2016. It made the following estimates: Service life 5 years or 10,000 hours Production 180,000 units Residual value $ 18,000 In 2016, Gruman uses the machine for 2,000 hours and produces 40,000 units. In 2017, Gruman uses the machine for 1,400 hours and produces 32,000 units. If required, round your final answers to the nearest dollar.

Required: Compute the depreciation for 2016 and 2017 under each of the following methods:

Straight-line method 2016 $ 2017 $

Sum-of-the-years'-digits method 2016 $ 2017 $

Double-declining-balance method 2016 $ 2017 $

Activity method based on hours worked 2016 $ 2017 $

Activity method based on units of output 2016 $ 2017 $

For each method, what is the book value of the machine at the end of 2016? At the end of 2017? Straight-line method 2016 $ 2017 $ Sum-of-the-years'-digits method 2016 $ 2017 $ Double-declining-balance method 2016 $ 2017 $ Activity method based on hours worked 2016 $ 2017 $ Activity method based on units of output 2016 $ 2017 $ If Gruman used a service life of 8 years or 15,000 hours and a residual value of $9,000 , what would be the effect on the following under the straight-line, sum-of-the-years'-digits, and double-declining-balance depreciation methods? Depreciation expense Straight-line method 2016 $ 2017 $ Sum-of-the-years'-digits method 2016 $ 2017 $ Double-declining-balance method 2016 $ 2017 $ Book value Straight-line method 2016 $ 2017 $ Sum-of-the-years'-digits method 2016 $ 2017 $ Double-declining-balance method 2016 $ 2017 $

Depreciation Methods

Gruman Company purchased a machine for $198,000 on January 2, 2016. It made the following estimates:

In 2016, Gruman uses the machine for 2,000 hours and produces 40,000 units. In 2017, Gruman uses the machine for 1,400 hours and produces 32,000 units. If required, round your final answers to the nearest dollar.

Required:

Compute the depreciation for 2016 and 2017 under each of the following methods:

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Activity method based on hours worked

Activity method based on units of output

For each method, what is the book value of the machine at the end of 2016? At the end of 2017?

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Activity method based on hours worked

Activity method based on units of output

If Gruman used a service life of 8 years or 15,000 hours and a residual value of $9,000 , what would be the effect on the following under the straight-line, sum-of-the-years'-digits, and double-declining-balance depreciation methods?

Depreciation expense

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Book value

Straight-line method

Sum-of-the-years'-digits method

Double-declining-balance method

Gruman Company purchased a machine for $198,000 on January 2, 2016. It made the following estimates:

In 2016, Gruman uses the machine for 2,000 hours and produces 40,000 units. In 2017, Gruman uses the machine for 1,200 hours and produces 30,000 units. If required, round your final answers to the nearest dollar.

1. Compute the depreciation for 2016 and 2017 under each of the following methods:

1. Straight-line method

   2016	$
   2017	$

2. Sum-of-the-years'-digits method

   2016	$
   2017	$

3. Double-declining-balance method

   2016	$
   2017	$

4. Activity method based on hours worked

   2016	$
   2017	$

5. Activity method based on units of output

   2016	$
   2017	$

2. For each method, what is the book value of the machine at the end of 2016? At the end of 2017?

1. Straight-line method

   2016	$
   2017	$

2. Sum-of-the-years'-digits method

   2016	$
   2017	$

3. Double-declining-balance method

   2016	$
   2017	$

4. Activity method based on hours worked

   2016	$
   2017	$

5. Activity method based on units of output

   2016	$
   2017	$

3. If Gruman used a service life of 8 years or 15,000 hours and a residual value of $9,000 , what would be the effect on the following under the straight-line, sum-of-the-years'-digits, and double-declining-balance depreciation methods?

Depreciation expense

1. Straight-line method

   2016	$
   2017	$

2. Sum-of-the-years'-digits method

   2016	$
   2017	$

3. Double-declining-balance method

   2016	$
   2017	$

Book value

1. Straight-line method

   2016	$
   2017	$

2. Sum-of-the-years'-digits method

   2016	$
   2017	$

3. Double-declining-balance method

   2016	$
   2017	$

1) Create a table “college” that has as attributes name, city name, state/province/region name, country name, and year in which the college was established as well as an ID as primary key. Insert records for 5 colleges of your choice, including one or more you have attended.

2) Create a table “student” that has as attributes first name, last names, and college ID for students, and insert the names of yourself and friends who attended one or more colleges together with you (if you have only attended one college, the name can be the same for all). Note that the student names can be fictitious but not the college name.

3) Add a foreign key to the appropriate table above, using “on delete cascade” as referentially triggered action, and demonstrate that insertion for a student record with a non-existing college ID fails.

4) Do a query that shows all students together with their respective college information. For colleges, that no students have attended, list all student information as null (i.e. OUTER JOIN).

5) Do a query that lists college names together with the number of students in the database that have attended that college, using the GROUP BY statement.

6) Do a query of catalog information.

7) Do a deletion of a college that was referenced and redo the query from question 4.

Consider the following clauses in a knowledge base:

1. A v ~B
2. ~W v B
3. ~A
4. W v B v M

Using this knowledge-base of clauses,

1. Show by a resolution-refutation proof that proposition M is true.
2. Show by resolution inference and the direct proof method that the proposition M is true.

You’re running an experiment to determine whether students perform better if they are rewarded with candy or vegetables. You sample 5 students from your class and you first reward the students with vegetables when they get right answers in the class. Then you test them and record their scores. Next, with a different 5 students you reward these students with cookies when they get right answers in the class. Then you test them with another test and record their scores. The following table depicts grades for the two conditions:

The standard deviation for the candy group is 0.25, and the mean is 3.75. The standard deviation for vegetable group is 0.25, and the mean is 2.75.

a. Identify the name of the test you will be employing.

b. Conduct a formal null hypothesis significance test

A researcher was interested in studying the phenomenon known as social distance, the reluctance of people to associate with members of different ethnic and racial groups. She designed an experiment in which students enrolled in a lecture course were asked to choose a discussion group (all meeting at the same time in the same building) based only on the ethnic–racial stereotype associated with the names of the teaching assistant:

Based on the enrollments, use the one-way chi-square to test the null hypothesis that the ethnic–racial name made no difference in students’ selection of a discussion group. State your null and alternative hypothesis and show your work step by step. Make sure interpret your finding (Use .01 significance level).

Lab Reaction Rate and order of a Chemical Reaction

H₃AsO₃ (aq) + I₃^- (aq) + H₂O (l) → HAsO₄^2- (aq) + 3 I^- (aq) + 4H⁺ (aq)

The data has been collected and pre-lab completed. Need help with the results.

Results

            Laboratory temperature: 25°C

DATA TABLE 1:

DATA TABLE 2:

Questions

- Calculate Δ[IO₃^-] = (1/3)[H₃AsO₃]₀ and record in Data Table 2. (Show calculation)

- Calculate the rates and record in Data Table 2 (Show calculations):

Rate=∆[IO3-]∆t

- Obtain the reaction orders with respect to IO₃^-, I^-, and H⁺ by comparing the rates as described in the lab discussion. Show the rates you are comparing.

- Write the rate law for this reaction with the correct values for a, b, and c.

- Calculate the rate constant, k, for Experiments 1, 2, 3, and 4, using the above rate law and the rates and initial concentrations calculated in Data Table 1. (Show calculations)

Experiment 1:

Experiment 2:

Experiment 3:

Experiment 4:

- How does the calculated value for k compare for the first four experiments, all at 25°C?

2) Calculate the rate constant, k, at the higher temperatures used in Experiment 5 and 6. Remember that you used the same initial concentrations as in Experiment 1. (Show calculations)

Experiment 5:_______

Experiment 6:_______

How does k change as the temperature increases?

Explain why the value for k at higher temperatures is different from the experiments at the lower temperature.