Total # Posts: 1,324
You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l.
January 9, 2017
Language Arts (ASAP)
3. In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals ...
December 6, 2016
at any instant a car is observed to be moving at a velocity of 10 m/s. Five seconds later the car is found to be moving at a velocity of 20 m/s. how far did the car travel in 5 s?
December 1, 2016
An engineer designs a satellite dish with a parabolic cross section. The dish is 14 ft wide at the? opening, and the focus is placed 4 ft from the vertex. ?a) Position a coordinate system with the origin at the vertex and the? x-axis on the? parabola's axis of symmetry and...
November 16, 2016
Clark's Country Pet Resort is fencing a new play area for dogs. The manager has purchased 186 yd of fence to enclose a rectangular pen. The area of the pen must be 2156 yds^2. What are the dimensions of the? pen? Length is how many yards? Width is how many yards?
November 15, 2016
How much mg of iron are there in 100g of spinach. if we burned 5.20g of spinach and added 10 ml of 2.0 M HCl into the spinach ashes.Then filtered the ashes and used 5 ml of that solution to put it in a testube and added 5 ml of 1.5 M KSCN in the testube. We then use a ...
November 14, 2016
2. The table shows the heights in inches of trees after they have been planted. What is the height of a tree that is 64 in. Tall in its pot A. 42 in B. 52 in C. 60 in D. 76 in 3. Which ordered pair is a solution to y=8x A. 0,8 B. -1,8 C. 1.5,10 D. 2,16 4. Which ordered pair is...
October 13, 2016
So, you're going to want to set up an equation and the proper concentration formula for this problem would be C1(Q1)=C2(Q2). C1 is your given concentration is 65% (0.65) and your second concentration (the desired concentration) is 40% (0.40). Your solution is 2.0L so that ...
September 29, 2016
a car traveling 64 miles per hour passes a bus traveling 53 mph in the same direction on the highway, if they maintain their speeds, how long will it take them to be 17.5 miles apart
September 22, 2016
The volume of a certain quantity of gas is inversely proportional to its pressure. If its pressure is 1000 grams per square cm, when its volume is 3m³, what will the pressure be when the gas is compressed to a volume of 2m³? (Thanks in advance in helping me here)
September 22, 2016
In a group of 54 candidates, 16 are female and the remaining are male. If four are to be randomly selected, what is the probability that there will be only female candidates selected?
September 4, 2016
In a group of 54 candidates, 16 are female and the remaining are male. If four are to be randomly selected, what is the probability that there will be only female candidates selected? 17 coins and 1 six-sided number cube are tossed together. What is the probability of getting ...
September 4, 2016
Kevin has an equal number of quarters nickels and dimes in his piggy bank, he randomly picks a coin replaces it and picks another coin. What is the probability that the sum of the two coins picked is at least thirty cents
August 29, 2016
Pre-Cal: Word Problem
So basically, how would you restrict the sin/cos graph so that it becomes 1 to 1? you section off the graph via interval notations. So it would like half of a period but with its head and end cut off. (at the highest point and lowest point, so it passes the HLT - Horizontal ...
June 23, 2016
will red blood cells undergo hemolysis, crenation or no change at all. 10%m/v NaCl 2% m/v glucose H2O 5% m/v glucose how would I come up with the answer I read the chapter and i'm confused
June 21, 2016
Miachel wants to double the area of his garden show below by increasing the length and width by the same amount. what will be the dimensions of his garden then? use a representation and equation to solve
May 30, 2016
a certain string vibrates in its fundamental frequency at 250 Hz. If the string is 15 cm long, what is the velocity of the wave in the string? What is the wavelength of the second harmonic frequency (the second wave which will fit into this length of string)?
May 14, 2016
Carlos and Krystal are taking a road trip from Greenville to North Valley.Each has their own map,and the scales on their maps are different. A. On Carlos's map,Greenville and North Valley are 4.5 inches apart. The scale on his map is 1 inch = 20 miles. How far is ...
April 19, 2016
I'm horrible at word problems but Create a chart that has the following information for each of the three selected carriers: cost per month, base number of minutes, additional cost per minute (overage) Using the information from the chart you created, write the total ...
April 16, 2016
A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length in the actual theater. He says that he can also use this information and any length in the actual...
April 9, 2016
Universal Laser, Inc., just paid a dividend of $3.30 on its stock. The growth rate in dividends is expected to be a constant 6 percent per year, indefinitely. Investors require a return of 15 percent on the stock for the first three years, a rate of return of 13 percent for ...
March 28, 2016
Cynthia is hanging a picture on the wall. The picture is 30 inches wide and 34 inches high and will be hung on a wall that is 10 feet high. The center of the picture must be 6 1/3 feet from the floor. Determine the distance from the ceiling to the top of the picture frame. ...
March 27, 2016
algebra word problem
elsie, after spending one fifth of her allowance for candy and one half of what was left over for flowers had 72 cents remaining. How manu cente did she have at first? This needs to be one variable answer.
February 24, 2016
I need help please. The usual markup on shoes at Fast Times Department Store is 240%. During a 25%-off sale, the store sold a pair of shoes for $39.95. Estimate the amount of the store's profit on the shoes.
February 24, 2016
Jason and Mary are married taxpayers in 2015. They are both under 65. For the tax year, they have a total of $41,000 in wages and $500 in interest income. Their deductions for adjusted gross income is $5,000 and their itemized deductions equal $7,950. They claim two exemptions...
February 20, 2016
i need help with science pls
Which of the following types of stars started out on the main sequence with the largest initial mass? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light ...
February 10, 2016
The table below gives selected values for the function f(x). Use a trapezoidal estimation, with 6 trapezoids to approximate the value of . x 1 1.1 1.2 1.5 1.7 1.9 2.0 f(x) 1 3 4 6 7 8 10
February 9, 2016
To my Grade 11 students especially Fahad. I know you are looking at this page. To you other dumbass students who actually use this page...you probably waste more time reading this page than actually studying the meaning of Onomatopoeia.
January 29, 2016
I am trying to help my child with this problem and I have no idea what to do to solve this word problem. Paul used 1 1/4 gallons of paint to cover 3/8 of the walls in his living room. How many gallons of paint will Paul need to paint all the walls in his living room?
January 15, 2016
Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 9x on the interval [−1, 1]. If so, find the x-coordinates of the point(s) guaranteed to exist by the theorem. Not quite sure how to do this one at all to be completely honest. ...
January 1, 2016
Let Y = 7x sin-1(2x)+^3 square root 1+4x2. Find Y'. I don't know how to do the square root part. I have done y'= (7x)' (Sin^-1(2x)) + (7x)(sin^-1)'+...... y'= 7 sin^-1 + (7x)sq(2x)'/square root (1-(2x))^2 + .....
December 13, 2015
A 100.0-mL sample of air is collected at 21 degrees Celsius and 772 mm Hg. What is the volume of air at STP? I know that I have to change deg. Celsius to K and mm Hg to atm. I'm stuck on what formula I should use... Should I use PV=nRT?
December 10, 2015
ELA HELP FAST
Why is baseball in all its forms from T-ball to the major leagues important to Americans of all ages? What traditions have grown around baseball, and how do they affect the people who play and love the game? How can knowing about the game of baseball, its history...
October 18, 2015
The angle of depression from the top of a 75 ft. lighthouse to a ship out in the ocean is 40*. How far out is the ship from the lighthouse? I've been stuck on this problem for an hour, I know the answer but don't know how to set it up/enter it in a calculator.
October 15, 2015
An extreme skier slides down an incline that forms an angle 24 degrees above the horizontal. The skier starts from rest and accelerates firmly at 4.00m/s^2 for a distance of 50.0m to the edge of a cliff. The cliff is 30.0m above the powdery snow below. Find how far from the ...
September 30, 2015