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1. How many Mg are in 187 g? a. 1.87x106 Mg b. 1.87x10-8 Mg c. 1.87x10-4...
Question 27 2 pts How many moles of oxygen atoms are in 2.30 moles of Mg(C,...
Question 27 2 pts How many moles of oxygen atoms are in 2.30 moles of Mg(C, H:02),? 9.20 moles O 4.60 moles O 1.15 moles 2.30 moles 0.575 moles Question 28 2 pts Crenation of red blood cells occurs when the cells are placed in a(n) Ophysiological saline solution isotonic solution ОООО hypertonic solution hypotonic solution Question 29 2 pts What is the oxidation state of carbon in C2H4O? -2 +2 0 +1 0-1 U Question 30 2 pts Use...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M glucose solution contains how much glucose? Glucose has a molar mass of 180 g/mol A. 11,2505 B. 180 C. 2.888 D. 1123 101. A salt solution is made by adding 25.5 g of salt to 135 ml of solution. What is the [w/v) of the salt solution? A. 18.9% B. 5.29% C. 110% D. 15.9% 102. How much of a 35.0X(w/v) glucose solution would...
1. Interpret this label information a. U-100 b. 5:8 c. 25% d. 1:20 e. 20 mg...
1. Interpret this label information a. U-100 b. 5:8 c. 25% d. 1:20 e. 20 mg = 4 ml 2. The doctor orders 50 mg. The medication comes in a 20% solution. How many ml will you give to the patient 3. The doctor orders 40 units of U-100. How many ml will you give to the patient 4. Ordered 200 mg IM q.i.d. Label info: 500 mg medication - inject 1.2 ml SW to yield 2ml solution. How much...
(10)1. Find the concentration in (a) mg/L, (b) ppm, (c) ppb, and (d) moles/L (M), respectively,...
(10)1. Find the concentration in (a) mg/L, (b) ppm, (c) ppb, and (d) moles/L (M), respectively, for thefollowing solution: 2 g of NaCl dissolved in 500 mL of water
LAB VII. PRACTICE PROBLEMS - CHAPTER 4 NAME: SECTION: b) How many grams of strontium nitrate,...
LAB VII. PRACTICE PROBLEMS - CHAPTER 4 NAME: SECTION: b) How many grams of strontium nitrate, Sr(NO), are needed to prepare 3.40x10 ml. of a 0.925 M solution? c) To what volume should 50.0mL of a 6.00M HCI stock solution be diluted to obtain a 1.50M HCl solution? How much water should be used? d) A 38.5ml sample of 0.875M AgNO, solution is mixed with 51.0mL sample of 0.744M NaCl solution. The AgCl precipitated has a mass of 2.06g. Calculate...
b. How would you prepare 225.0 mL of 1.33 M HCl from a 6.00 M stock solution? C. When 25.00 mL of 0.695 M HCl reacts...
b. How would you prepare 225.0 mL of 1.33 M HCl from a 6.00 M stock solution? C. When 25.00 mL of 0.695 M HCl reacts with an excess of silver nitrate, will a precipitate form? Write the net ionic equation for this reaction. How many grams of precipitate can be theoretically obtained? d. What volume of 0.2500 M strontium hydroxide is required to completely react with 75.00 mL of 0.07942 M HCI? e. When 37.5 mL of 0.439 M...
1. Using Table 38.3 in the Voyce text, calculate the solubility of Manganese(II) hydroxide at 25oC...
1.
Using Table 38.3 in the Voyce text, calculate the solubility of
Manganese(II) hydroxide at 25oC
A.
5.7 x 10-5
B.
3.6 x 10-5
C.
4.4 x 10-7
2.
The pH of a 0.0147M KCN solution is:
A.
10.7
B.
5.52
C.
3.3
D.
8.48
3.
The pH of a buffer solution composed of 0.020M HCHO2
and 0.014M NaCHO2 is:
A.
3.59
B.
3.74
C.
3.90
4.
When 400ml of a 0.01M SnCl2 solution is mixed with a
300ml if...
1. How many classifications of technology are there? A. 6 B. 4 C. 7 D. 8...
1. How many classifications of technology are there? A. 6 B. 4 C. 7 D. 8 2. In what year was MRI scanning equipment created for the healthcare sector? A. 1950’s B. 1980’s C. 1880 D. 1900 3. Which of the following are directly associated with technology? A. Products B. Production C. Service D. Marketing E. All of the above 4. Innovations can be classified as which of the following: A. Radical B. Revolutionary C. Incremental D. Evolutionary E. All...
1. In [Cu(NH3)4]CO3, how many 3d electrons does copper have? A. 6 B. 7 C. 8...
1. In [Cu(NH3)4]CO3, how many 3d electrons does copper have? A. 6 B. 7 C. 8 D. 9 E. 10 2. In the complex ion [Fe(CN)6]4–, the oxidation number of Fe is A. +1. B. +2. C. +3. D. –4. E. +6. . 3. Which of the following choices can function as a monodentate ligand only? A. H2NCH2CH2NH2 B. –O2CCO2– C. H2O D. –OCH2CH2CH2O– E. H2PCH2CH2PH2 4. In the complex ion [Co(en)2Br2]+, the oxidation number of Co is A. +1....
How many valence electrons does S^2 have? A. 3 B. 8 C. 15 D. 1 E....
How many valence electrons does S^2 have? A. 3 B. 8 C. 15 D. 1 E. 18 52. Which of the following ground-state ions has the largest number of unpaired electrons? A. Cr^2+ B. Mn^2+ C. Ni^2+ D. Cu^+ E. Co^2+ 53. Arrange the following ions in order of increasing ionic radius: K^+, P^3-, S^2-, CI^-, increasing radius A. K^+ < CI^- < S^2- < P^3- B. CI^- < S^2- < P^3- < K^+ C. K^+ < P^3- < S^2-...
Question 27 2 pts How many moles of oxygen atoms are in 2.30 moles of Mg(C, H:02),? 9.20 moles O 4.60 moles O 1.15 moles 2.30 moles 0.575 moles Question 28 2 pts Crenation of red blood cells occurs when the cells are placed in a(n) Ophysiological saline solution isotonic solution ОООО hypertonic solution hypotonic solution Question 29 2 pts What is the oxidation state of carbon in C2H4O? -2 +2 0 +1 0-1 U Question 30 2 pts Use...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M glucose solution contains how much glucose? Glucose has a molar mass of 180 g/mol A. 11,2505 B. 180 C. 2.888 D. 1123 101. A salt solution is made by adding 25.5 g of salt to 135 ml of solution. What is the [w/v) of the salt solution? A. 18.9% B. 5.29% C. 110% D. 15.9% 102. How much of a 35.0X(w/v) glucose solution would...
1. Interpret this label information a. U-100 b. 5:8 c. 25% d. 1:20 e. 20 mg = 4 ml 2. The doctor orders 50 mg. The medication comes in a 20% solution. How many ml will you give to the patient 3. The doctor orders 40 units of U-100. How many ml will you give to the patient 4. Ordered 200 mg IM q.i.d. Label info: 500 mg medication - inject 1.2 ml SW to yield 2ml solution. How much...
(10)1. Find the concentration in (a) mg/L, (b) ppm, (c) ppb, and (d) moles/L (M), respectively, for thefollowing solution: 2 g of NaCl dissolved in 500 mL of water
LAB VII. PRACTICE PROBLEMS - CHAPTER 4 NAME: SECTION: b) How many grams of strontium nitrate, Sr(NO), are needed to prepare 3.40x10 ml. of a 0.925 M solution? c) To what volume should 50.0mL of a 6.00M HCI stock solution be diluted to obtain a 1.50M HCl solution? How much water should be used? d) A 38.5ml sample of 0.875M AgNO, solution is mixed with 51.0mL sample of 0.744M NaCl solution. The AgCl precipitated has a mass of 2.06g. Calculate...
b. How would you prepare 225.0 mL of 1.33 M HCl from a 6.00 M stock solution? C. When 25.00 mL of 0.695 M HCl reacts with an excess of silver nitrate, will a precipitate form? Write the net ionic equation for this reaction. How many grams of precipitate can be theoretically obtained? d. What volume of 0.2500 M strontium hydroxide is required to completely react with 75.00 mL of 0.07942 M HCI? e. When 37.5 mL of 0.439 M...
1.
Using Table 38.3 in the Voyce text, calculate the solubility of
Manganese(II) hydroxide at 25oC
A.
5.7 x 10-5
B.
3.6 x 10-5
C.
4.4 x 10-7
2.
The pH of a 0.0147M KCN solution is:
A.
10.7
B.
5.52
C.
3.3
D.
8.48
3.
The pH of a buffer solution composed of 0.020M HCHO2
and 0.014M NaCHO2 is:
A.
3.59
B.
3.74
C.
3.90
4.
When 400ml of a 0.01M SnCl2 solution is mixed with a
300ml if...
How many valence electrons does S^2 have? A. 3 B. 8 C. 15 D. 1 E. 18 52. Which of the following ground-state ions has the largest number of unpaired electrons? A. Cr^2+ B. Mn^2+ C. Ni^2+ D. Cu^+ E. Co^2+ 53. Arrange the following ions in order of increasing ionic radius: K^+, P^3-, S^2-, CI^-, increasing radius A. K^+ < CI^- < S^2- < P^3- B. CI^- < S^2- < P^3- < K^+ C. K^+ < P^3- < S^2-...
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