Total # Posts: 295
"How many grams of the precipitate will form if 25.5 mL of 4.5 M solution of lead (II) nitrate is allowed to react with 35.5 mL of 3.0 M solution of potassium chloride? What is the concentration of the excess reactant after the reaction has reached completion?" I got...
February 9, 2017
Why should you avoid writing about too many events in a personal narrative? A.to avoid overwhelming the reader with too much info. B.to help you, the writer, stay on topic. C.to allow your self, the writer, room to add many details and descriptions. D. all of the above are ...
October 3, 2016
A closed cylindrical container 10 feet in height and 4 feet in diameter contains water with depth of 3 feet and 5 inches. What would be the level of the water when the tank is lying in horizontal position?
April 27, 2016
A penguin has a mass of 13 kg. The penguin slides over the ice for a distance of 50.7 m in 1.7 s before coming to a complete stop. The penguin uniformly accelerates during the entire time period. What is the net force exerted on the penguin?
February 8, 2016
You are having problems on your Windows 7 computer and you pull up Device Manager to see if there are any alerts. Two of your devices have yellow exclamation points over them. What does this most likely indicate? A. A missing driver B. A disabled device C. A deleted device D. ...
January 19, 2016
A landscaper is designing a flower garden in the shape of a trapezoid. She wants the shorter base to be 3 yards greater than the height and the longer base to be 7 yards greater than the height. She wants the area to be 295 square yards. The situation is modeled by the ...
October 21, 2015
check my work
8. Which of the following is a successful result of the Reconstruction? (1 point) states could limit voting rights in elections more African Americans could go to school segregation kept the races apart or separate sharecropping helped poor blacks own land 6. Which of the ...
September 2, 2015
11. Explain two ways in which sectionalism caused conflict or tension in the United States during the early 1800s. Then explain how sectionalism affects economics and politics in the United States today. (10 points)
September 1, 2015
Use the quote below to answer the following question. [T]hese Powers . . . are so distributed among the Legislative, Executive, and Judicial Branches, into which the general Government is arranged, that it can never be in danger of degenerating into a monarchy, an ...
August 24, 2015
Consider the events of drawing an ace, then draw another ace, followed by a queen, one at a time without replacement (from a standard deck of cards). What is the probability of drawing an ace, then another ace, then a queen? please show explanation
August 12, 2015
how do I write 6 2/3 + 3 4/5 to its simpliest form. This is how I did it. Could someone tell me if its write?. Or give me the proper steps to doing this? 6 2/3 + 3 4/5 = 20/15 + 19/15= 39/15= 2 9/15 = 2 3/5
August 8, 2015
A Today/CNN/Gallup Poll of 1015 adults found that 13% approved of the job Congress was doing in 1995. Find the 95% confidence interval of the true proportion of adults who feel this way.
April 8, 2015
chemistry to MathMate
Chemistry - CJ, Tuesday, March 31, 2015 at 10:53pm I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.
March 31, 2015
Chemistry - MathMate, Tuesday, March 31, 2015 at 2:56pm 1m = 1000 mm (millimeter) 1 mm = 1000 μm (micrometer) 1 μ = 1000 nm (nanometer) If the tube is 1 nm in diameter, then veryify that 5 μm = 5*1000 nm = 5000 nm = how many diameters? Chemistry - MathMate, ...
March 31, 2015
Nanotubes are rolled up cylinders of graphite with diameters of about 1nanometer, and lengths in micrometers. (I) If a nanotube is 5 micrometers long, how many diameters does this represent?
March 31, 2015
an architect designs a rectangular window such that the width of the window is 40 com less than the height. If the perimeter of the window is 500 cm, what are the widths and heights?
March 29, 2015
Two coworkers picked up some writing instruments at the office supply store. Shane selected 3boxes of pencils and 1box of pens, paying $8. Terrell spent $6 on 1box of pencils and 1box of pens. What's the equation for shanes total cost? Equation for Terrell total cost? Thanks
January 27, 2015
Ms. Hernandez has 17 tomato plants that she wants to plant in rows. She will put 2 plants in some rows and 1 plant in the others. How many different ways can she plant the tomato plants?
October 27, 2014
Is there a reaction between Sodium Acetate and Copper (II) Nitrate. If so, what is the balanced equation for it? Also, what type of reaction is it does it form a precipitate?
October 18, 2014
Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O The reactants are present in equimolar amounts, so there is no excess or limiting reactants. (0.0500 L) x (0.600 mol/L HCl) x (2 mol H2O / 2 mol HCl) = 0.0300 mol H2O (4.184 J/g·°C) x (50.0 g + 50.0 g) x (25.82 - 21.73)°C = ...
October 18, 2014
The synthesis of zinc iodide was performed using 1.8912g of zinc and 1.5965g of iodine. Determine the limiting reactant and calculate the theoretical yield of zinc iodide in grams.
October 7, 2014
Aluminum oxide is formed by reaction of excess oxygen with aluminum. 4 Al(s) + 3 O2(g) -> 2 Al2O3(s) Calculate the mass of aluminum required to form 18.2 kg of aluminum oxide if the reaction has a percent yield of 83.4%.
October 2, 2014
Silver chromate may be prepared by the following reaction. 2 AgNO3(aq) + K2CrO4(aq) Ag2CrO4(s) + 2 KNO3(aq) Calculate the mass of silver chromate produced when 0.623 L of 1.345 M silver nitrate is reacted with 245 mL of 1.89 M potassium chromate.
October 2, 2014
An aqueous solution of barium nitrate has a density of 1.09 g/cm3. The solution is 18.7% barium nitrate by mass. How many nitrate ions are present in 87.6 dL of this solution?
September 26, 2014
Okayy so my class is doing conversions annnd.I need help ALOT. 130 meters per second into miles per hour . If you answer can you show me how you got the answer and how to know of the answer is right?
August 11, 2014
A first capacitor is initially connected to potential source ?. The charged capacitor is then removed from the source and connected to a second initially uncharged capacitor. Determine the final potential across the first capacitor long after the switch is closed.
February 28, 2014
What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered with a pH of 4.55 and has a freezing point of -2.0 degrees Celsius? (assume complete dissociation and a density of 1.01g/mL for the solution.)
February 5, 2014
Do the philosophies of laissez-faire and survival of the fittest explain why John D. Rockefeller succeeded in Cleveland, and was his success good for the oil industry and the American consumer? Any information would be greatly appreciated, please and thank you!
January 9, 2014
Ms. Hernandez has 17 tomato plants that she wants to plant in a rows. She will put 2 plants in some rows and 1 plant in the others. How many different ways can she plant the tomato plants?
November 26, 2013
1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if radon...
November 18, 2013
an average sized female spider and a large spider can lay a total of 2100 eggs at one time . The large spider lays 20 times the number of eggs as the average spider. How many eggs does the average spzied spider lay?
November 14, 2013
4. Two consultants were hired by a company. The total consultant fees were $18,500. If one consultant had earned $500 less, each consultant would have been paid the same. How much was each consultant paid? 6. Five cars in a race all finished within 8 seconds of each other. Car...
October 28, 2013
Which of the following statements about the Platt Amendment is true? A - It guaranteed that Cuba would be independent by 1915. B - It prevented the United States from intervening in Cuban foreign affairs. C - It essentially made Cuba a U.S. protectorate. D - It opened up ...
October 24, 2013
Even though Robespierre was not a defender of women's equality in France, how are his and Etta Pal d'Aelders's arguments similar? When might Sieyes claim that women would be eligible for the equal rights that Etta Palm d'Aelders states that they rightfully ...
October 21, 2013
5. What reactions occurs when a solution of hydrochloric acid, HCl, is mixed with a solution of calcium hydroxide, Ca(OH)2? (A) Cl + Ca(OH) --> HCa + Cl(OH)2 (B) HCl + Ca(OH)2 --> H(OH)2 + CaCl (C) 2HCl + Ca(OH)2 --> 2H2O + CaCl2 (D) 2HCl + Ca(OH)2 --> H2Ca + 2ClOH...
October 16, 2013
Calculate the amount of heat required to completely sublime 76.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
September 1, 2013
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is ...
July 16, 2013
The most recent financial statements for Retro Machine, Inc., follow. Sales for 2010 are projected to grow by 20 percent. Interest expense will remain constant; the tax rate and the dividend payout rate will also remain constant. Costs, other expenses, current assets, fixed ...
March 20, 2013
st joseph school
when a traffic light turns green, a car accelerates at a constant rate, the decelerates in the same manner to stop at the next traffic light. The speed of the car, s, is given by the equation, s=-10 /t-8/ + 80 where t is time. Find the time , t, it takes for the car to reach ...
March 17, 2013
24 m of fencing are available to enclose a play area. what would the maximum area be if the fencing only went on 3 sides because the wall is used as the 4th side. Please show you work
February 22, 2013
If the federal government enacts a tax on a monopoly, how would you expect the additional tax to affect the following: a. Profits of the monopoly b. Output produced by the monopoly c. Prices charged by the monopoly
February 16, 2013
programming (using raptor)
Create a program that determine the shipping cost for an order based on the following table: From $0.00 $20.00 $50.00 $75.00 To $19.99 $49.99 $79.99 $1000.00 Price $2.95 $3.95 $4.95 Free
December 3, 2012
1)one number is four more than a second number. Twice the second is three more than the first. Find the numbers. 2)four times one number minus a second is 11, and the sum of the numbers is 14. Find the numbers.
October 27, 2012