swapnilshejwal

A 9.00L tank at 13.6°C is filled with 11.8g of dinitrogen monoxide gas and 2.27g of chlorine pentafluoride gas. You can assume both gases behave as ideal gases under these conditions.

Calculate the mole fraction of each gas. Round each of your answers to 3 significant digits.

1) Gas: Dinitrogen monoxide 

Mole Fraction: ?

2) Gas: Chlorine pentafluoride

Mole Fraction: ? 

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 32.0cm wide and 38.4cm high. The maximum safe pressure inside the vessel has been measured to be 8.30MPa . For a certain reaction the vessel may contain up to 2.92kg of boron trifluoride gas. Calculate the maximum safe operating temperature the engineer should recommend for this reaction. Write your answer in degrees Celsius. Be sure your answer has the correct number of significant digits

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 26.0cm wide and 31.2cm high. The maximum safe pressure inside the vessel has been measured to be 2.00MPa. For a certain reaction the vessel may contain up to 0.145kg of carbon monoxide gas. Calculate the maximum safe operating temperature the engineer should recommend for this reaction. Write your answer in degrees Celsius. Round your answer to 3 significant digits.

A chemistry graduate student is designing a pressure vessel for an experiment. The vessel will contain gases at pressures up to 350.0MPa. The student's design calls for an observation port on the side of the vessel (see diagram below). The bolts that hold the cover of this port onto the vessel can safely withstand a force of 5.00MN.

Calculate the maximum safe diameter w of the port. Round your answer to the nearest 0.1cm.

1. suppose a particular consumer has 8 birr to be spent on two goods x and y. thr unit price good x=5 bir and unit price y of  3 birr

Paraphrase this article

Source A: Mary Cooper's Diary

Is it a primary or secondary source?

This is a primary source because it is a firsthand account written by someone who lived during the time period being studied.

Is it a reliable source?

The reliability of this source depends on Mary Cooper's credibility as a writer and the accuracy of her observations. However, as a primary source, it provides valuable insight into the daily lives of women in colonial America.

What is the main idea of the source?

The main idea of the source is to provide a personal account of Mary Cooper's daily life as a woman in colonial America. She writes about her daily activities, including household chores, socializing with friends, and attending church.

Source B: Women's Roles Article

Is it a primary or secondary source?

This is a secondary source because it is an article written by a historian who has researched and analyzed primary sources related to the topic.

Is it a reliable source?

The reliability of this source depends on the author's expertise and the quality of their research. However, as a secondary source, it provides valuable analysis and interpretation of primary sources related to the daily lives of women in colonial America.

What is the main idea of the source?

The main idea of the source is to provide an overview of the roles and responsibilities of women in colonial America. The article discusses how women's lives were shaped by their social class, religion, and geography, and how they contributed to their families and communities

through their work and social activities.

Question 1

A single dose of a certain antacid contains 250. mg of Mg(OH)2 and 300. mg of CaCO3. How many mmol of H+ can be neutralized by one dose of this antacid? Do not include units in your answer.

Question 2

What step is used to break the HCO3-/CO2 buffer system during the titration with NaOH?

Question 3

A 0.500 g antacid tablet is mixed with 50.00 mL of 0.100 M HCl then boiled. After cooling, 4.90 mL of 0.100 M NaOH is required to achieve a phenolphthalein end point. Calculate the neutralizing power of the antacid tablet in terms of mmol of H+/g of antacid. Do not include units in your answer.

Question 4

If calcium carbonate is the only active ingredient in the antacid in question #3, how many mg of calcium carbonate are there in a 0.500 g tablet? Do not include units in your answer.

1) Below are some common foods and their pHvalues. Which ones are most likely to cause "heartburn"? Explainwhy you made those choices.

soda, 2.0-4.0; lemon juice,2.00- 2.60; tofu, 7.20; tomatoes,4.0-4.4; cow's milk, 6.40- 6.80;tea, 7.20; black coffee, 5.0-5.1; cooked white rice, 6.00- 6.70

2) Explain the technique of back- tiltration.

3) Some antacids will generate carbon dioxide,CO2, when they neutralize the acid in gastric juice. Write the NETEQUATION for the reaction of the antacid containing the anioncarbonate, CO 2/3-, or the anion bicarbonate, HCO3-, with acid(H+).

4) Write the net ionic equation for the neutralization of thebases, magnesium hydroxide, Mg(OH)2 and aluminum hydroxide,Al(OH)3, found in Maalox, for example, with acid (H+).

what is the maximum mass of aluminium hydroxide that can be produced when 60.0 ml of 0.280 M aluminum nitrate solution is mixed with 300.0 ml of 0.120 M sodium hydroxide solution??please explain how the limiting reagent work here

Calculate the mass of ferrous ammonium sulfate you would need toadd to a 4.00 mL volumetric flask to make a solution that is 51ppm in Fe.

Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and methane.

2 NH₃(g) + 3 O₂(g) + 2 CH₄(g) → 2 HCN(g) + 6 H₂O(g)

If 5.29 ✕ 10³ kg each of NH₃, O₂, and CH₄ are reacted, what mass of HCN and of H₂O will be produced, assuming 100% yield?

A solution is prepared by dissolving 14.4 g ammonium sulfate in enough water to make 113.0 mL of stock solution. A 13.20-mL sample of this stock solution is added to 52.30 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.


An 11.7-L sample of gas is determined to contain 0.40 mol N₂. At the same temperature and pressure, how many moles of gas would there be in a 10.-L sample?

A solution is prepared by dissolving 23.8 g of ammonium sulfate in enough water to make 100.0 mL of stocksolution. A 11.50-mL sample of this stock solution is added to 51.10 mL of water. Calculate the concentration of ammonium ions andsulfate ions in the final solution.

A solution is prepared by dissolving 0.18 moles of acetic acidand 0.18 moles of ammonium chloride in enough water to make 1.0 Lof solution. *Find the concentration of ammonia in thesolution.*

(It's not 1.75e-5). Just point me in the right direction.Another answer was posted on here similar to this question, butwith .15 moles, in which someone commented that the process wasright, but the answer was wrong. Even with that knowledge, I can'tfind the correct answer. Please lead my in the right direction.Thanks.

Potassium acid phthalate, KHP (KHC_8H_4O_4), is a primarystandard reagent used to determine exactly the concentation of asolution of base, such as NaOH, whose approximate concentration isknown. KHP is a weak acid, and the equation for the neurtalizationof KHP by NaOH is.....

a)C.A. Isernhagen dissolved .48 grams of KHP in 20.0mL of water.She found out that it required 17.0mL of NaOH to reach the endpointof the titration.

b)How many moles of the acid, KHP, were originally presentbefore the addition of the base?

c)How many moles of NaOH were required to neutralize the amountof KHP in Part b.

d)What is the concentration of the NaOH solution?

e) What is the ppH of the solution at the endpoint? (K_a for KHP= 3.89*10^-6)

The solubility product of PbBr2 is 8.9 x 10^-6. Determine themolar solubility in the following.

(a) 0.16 M KBr solution

(b) 0.15 M Pb(NO3)2 solution

Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, and 14.0. Ksp=5*10^-16 Kf=0.02

Calculate the solubility of Mg(OH)2(s) in g/L in an aqueous solution buffered at pH = 8.60. The Ksp of Mg(OH)2 is 5.61 � 10�12 M3.

1. Assume the interest rate in the US is 6% and the UK is 4%. Which currency will be expected to depreciate according to the Fisher Effect? Explain your answer.

2. Define a Peg Exchange Rate regime? What are some of the benefits of pegged currency? Give a real-life example of a currency that is currently pegged.

3. What is the difference between spot rates and forward rates?

4. Discuss the arguments that favor a floating exchange rate system against a fixed exchange rate system. Which system do you think is better.

5. What is strategy? How does strategy relate to a firm’s profitability?

6. Consider the firm in terms of a value chain. What is the difference between primary activities and support activities? Provide examples of each.

7. Define the term supply chain management. How is supply chain management linked with production?

8. What are the three main factors that affect the decision of where to locate production? Discuss.

Calculate the solubility of Mg(OH)2(s) in g/L in an aqueous solution buffered at pH = 8.60.The Ksp of Mg(OH)2 is 5.61

Calculate the molar solubility ifAg₂C₂O₄ in a solution buffered atpH = 7.

ksp (Ag₂C₂O₄) = 3.5 x10^-11

H₂C₂O₄:
ka1 = 5.60 x 10^-2
ka2 = 5.42 x 10^-5

Calculate the molar solubility of Ni(OH)2 when buffered at pH =8.0.

Calculate the molar solubility of Ni(OH)2 when buffered at pH =10.1.

Calculate the molar solubility of Ni(OH)2 when buffered at pH =11.9.