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James

Questions and answers by James, page 10

Questions (1,466)

If 25.00 ml of H2SO4 solution is titrated to an end point with 32.16 ml of 0.1986 M NaOH, what is the molarity(M) of the H2SO4
1. 1 answer
2. 453 views
For the curve f(x)=x ln x+(1-x)ln(1-x), find the value of x in the interval 0<x<1 where f(x) has a minimum.
1. 1 answer
2. 419 views
6 9/8-25/6=
1. 1 answer
2. 290 views
The thickness of a pure Ag plate on a base metal is to be determined by controlled potential coulometry. The metal sheet is
1. 2 answers
2. 535 views
Imagine that you have a 7.00L gas tank and a 4.00L gas tank. You need to fill one tank with oxygen and the other with acetylene
1. 6 answers
2. 2,925 views
The distribution co-efficient of butanoic acid (pKa = 4.8) between water and two organic solvents are given below;Benzene D= 3.0
1. 2 answers
2. 541 views
The distribution co-efficient of butanoic acid (pKa = 4.8) between water and two organic solvents are given below;Benzene D= 3.0
1. 2 answers
2. 521 views
Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M Ti3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find
1. 1 answer
2. 626 views
Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M Ti3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find
1. 2 answers
2. 1,028 views
Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M TI3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find
1. 2 answers
2. 594 views
A 7.1 kg watermelon is placed at one endof a 5.9 m, 244 N scaﬀolding supported by two cables. One supporting cable is at the
1. 1 answer
2. 1,130 views
Alfred and Bob toss a coin alternatively, and whoever gets a head first will win. They play many times and whoever loses in the
1. 4 answers
2. 590 views
Do you know if there is an online tutorial for the book Office 2013 Marquee by Rutosky, Sequin, Roggenkamp, Rutosky
1. 3 answers
2. 388 views
The 25-lbf block has an initial speed for v0 = 10 ft/s when it is midway between springs A and B. The coefficient of static and
1. 1 answer
2. 737 views
Describe an infinite geometric series with a beginning value of 2 that converges to 10. What are the first 4 terms of the
1. 2 answers
2. 871 views
explain the consequence of x chromosome inactivation in terms of the proteins encoded by the x chromosome genes?
1. 1 answer
2. 446 views
Hey! I've tried using equations such as weight=m*g for this problem, but I don't think I'm doing it right. Can someone help?A
1. 2 answers
2. 565 views
This one has been confusing me, can someone walk me through it? I'd like to know which formulas I need to use and everything.A
1. 2 answers
2. 594 views
What is the domain of x/(x-1)?Is it all x <> 1?
1. 1 answer
2. 335 views
An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of
1. 4 answers
2. 3,254 views
If Owen gives $40 to Charley, the will have an equal amount of money. If Charley gives $80 to Owen, the ratio of Owen's money to
1. 4 answers
2. 1,843 views
Hey, I'm studying for my physics class, and I'm not sure how to solve this problem. Can someone walk me through it please? I'd
1. 1 answer
2. 684 views
A 42 kg man stands on a bathroom scale in an elevator. Starting from rest at the bottom floor, the elevator ascends, attaining
1. 2 answers
2. 803 views
Can someone help me with this problem? It requires a lot of visualizing and I've never been great at problems like that.A pair
1. 1 answer
2. 614 views
Can someone walk me through how to work this?A block is being pushed up a frictionless incline by an applied horizontal force,
1. 1 answer
2. 639 views
Can someone walk me through how to work this? It's worded weirdly and I'm not sure how to solve it.Mass M1= 2.2 kg lies on a
1. 2 answers
2. 576 views
Can someone help me solve this one? I've tried it a few times, but I don't think I'm getting it right.A block of mass M = 2.2 kg
1. 2 answers
2. 642 views
How much should be deposited in an account paying 3.5% interest, compounded quarterly, in order to have a balance of $
1. 2 answers
2. 483 views
A M2= 6.40 kg mass is released from rest at height h = 6.60 m . Using the law of conservation of energy, determine the speed of
1. 1 answer
2. 441 views
A block of mass 13.9 kg slides from rest down a frictionless 40.0° incline and is stopped by a strong spring with a spring
1. 1 answer
2. 475 views
Can someone walk me through how to solve this? Any help is much appreciated!Two masses moving along a straight line undergo a
1. 2 answers
2. 560 views
A 4.44 kg piece of granite with a specific heat of 0.803 J g-1 °C-1 and a temperature of 98.8°C is placed into 2.00 L of water
1. 5 answers
2. 3,328 views
The coordinates of (triangle) ABC are A(-3,-1 ) , B( 5,1 ) and C (2,4)(i) Calculate the length of AB , BC and AC (ii) Hence,
1. 2 answers
2. 596 views
A woman expends 96 kJ of energy in walking a kilometer. The energy is supplied by the metabolic breakdown of food intake and has
1. 3 answers
2. 2,125 views
Could someone show me how to work this? It's for a study guide I'm practicing, and I just can't seem to get the correct answer.T
1. 3 answers
2. 424 views
6. One angle measures 54 more than 3 times another angle. The angles are supplementary. What are their measures?11. A piece of
1. 4 answers
2. 1,274 views
Calculate the number of grams of nitrogen gas, N2, in a container that has a volume of 7.50 L at a pressure of 1200 mm Hg and a
1. 1 answer
2. 428 views
Assuming all volume measurements are madeat the same temperature and pressure, what volume of hydrogen gas is needed to react
1. 2 answers
2. 1,121 views
Can someone help me solve this? I've tried it a few times, but I keep getting answers that seem off. Like, for example, I'm
1. 1 answer
2. 427 views
Mass m2 rests on an incline and attaches to a string that goes over a pulley, where mass m1 hangs on the other side of the
1. 1 answer
2. 603 views
Three consecutive terms of a Geometric Progression are ? 6, p and ? 32 . find the value of p.
1. 1 answer
2. 460 views
a rectangular tank with a square base of side 60 centimeters and a height of 45 centimeters is one third filled with water.
1. 4 answers
2. 1,576 views
Luisa travels 25 km in 3hours 45 mins. She walks part of the way at 4 km/h and cycles the rest at 12 km/h. How far did she walk?
1. 4 answers
2. 738 views
What are welfare payments and we're South African government providing and to whom
1. 1 answer
2. 442 views
Convert the polar equation to rectangular form:r = -2cosø - 2sinø
1. 2 answers
2. 589 views
A box slides along a rough floor with initial kinetic energy of 7 J. A person pushes on the box, in the same direction as its
1. 2 answers
2. 497 views
A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of
1. 6 answers
2. 1,088 views
yesterday ghana lotto winnig numbers was :07,67,76,71,69.please what are the numbers to win today.
1. 5 answers
2. 814 views
So on my study guide for a final I have this:In Gideon v. Wainwright, d___ _______ rights were the main issue in this Supreme
1. 2 answers
2. 532 views
What lesson or meaning do you think the story "The Mark of the Beast" by Rudyard Kipling, held for the British audience of the
1. 2 answers
2. 551 views
Use Pascal's triangle to expand the expression.(x − y)5 so I tried to work this out: (x-y)^5 = [(x-y)(x-y)][(x-y)(x-y)](x-y)
1. 2 answers
2. 706 views
please help, step by step having difficulty here as well.Find the term containing x5 in the expansion of (x + 2y)^10
1. 1 answer
2. 338 views
Use absolute value notation. The distance between x and -10 is at least 6.|x-(-10)|>or=6 Is that notation correct?
1. 4 answers
2. 3,038 views
Rewrite each expression with positive exponents and simplify.X^2•x^n/x^3•x^n What does this question mean? Do I just cancel
1. 2 answers
2. 724 views
A certain bacterium swims with a constant speed of 4.61 µm/s. How long will it take to swim across a petri dish that has a
1. 3 answers
2. 1,276 views
all of the following are coordinates on the same straight line except:A) (0,2) B) (3,11) C) (5,15) D) (7,23) E) (x,3x+2)
1. 4 answers
2. 546 views
Find all solutions of the equation in the interval [0,2pi). 2sin theta+1=0.Write answer in radians in terms of pi.
1. 3 answers
2. 3,659 views
The height of a cylindrical container is 15 cm and the inside diameter of the container is 10 cm.a) what is the volume? b) How
1. 2 answers
2. 555 views
a 60-kg student travelling in a 1000 kg car with a constant velocity has a kinetic energy of 1.2 *10^4 J. What is the
1. 2 answers
2. 1,192 views
In the reaction, PCl3 + Cl2 ------> PCl5 the concentration of the reactants at equilibrium were each determined to be 7.2 mol/L,
1. 2 answers
2. 518 views
A nutritional formula calls for 500 g of dextrose in a total volume of 2000 ml. how many milliliters of a 70% w/v dextrose
1. 4 answers
2. 1,675 views
Translate the following sentence into math symbols. Then solve the problem.y more than 4 is -36 My answer: 4 + y = =36 y = -40?
1. 6 answers
2. 4,599 views
The following state were collected for determining the concentration of suspended solids in a water sample. (D= 1.01 g/mL).
1. 1 answer
2. 768 views
A 25.0 mL aliquot of a well-shaken and filtered sample of river is pipetted into an evaporating dish. The sample was heated to
1. 4 answers
2. 4,421 views
What is the circumference of the largest circle you could cut from a 30 cm by 20 cm sheet of paper? What area of paper would you
1. 2 answers
2. 706 views
The following state were collected for determining the concentration of suspended solids in a water sample. (D= 1.01 g/mL).
1. 3 answers
2. 854 views
The following data were collected for determining the concentration of suspended solids in a water sample. (D= 1.01 g/mL).
1. 3 answers
2. 1,460 views
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is
1. 5 answers
2. 4,730 views
A fireman d = 33.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi =
1. 4 answers
2. 3,678 views
You find 3 trees where each tree gives adifferent coloured fruit: red, pink or orange. You perform crosses between all three
1. 1 answer
2. 517 views
Calculate Delta H for the reaction CH4(g)+NH3(g)-->HCN(g)+3H2(g) given,N2(g)+3H2(g)->2NH3(g) DeltaH=-91.8kj C(s)+2H2(g)->CH3(g)
1. 3 answers
2. 5,002 views
a person purchased a $142,819 home 10 years ago by paying 15% down and signing a 30-year mortgage at 10.5% compounded monthly.
1. 2 answers
2. 588 views
-4(a+3)-a
1. 1 answer
2. 240 views
Identify the incorrect sentence.A. There is a good variety of mugs in the cabinet. B. There are a good variety of mugs in the
1. 13 answers
2. 5,642 views
Identify the correct sentence.A. A giant spider with long legs are crawling on the wall in the living room. B. A giant spider
1. 5 answers
2. 5,412 views
A model airplane has a mass of 0.95 kg and moves at a constant speed on a circle that is parallel to the ground. Assume that
1. 3 answers
2. 595 views
16-4c=20
1. 3 answers
2. 379 views
How many grams of drug X are in 10 mL of a 1:200 solution of X?
1. 2 answers
2. 491 views
Find the magnitude and direction angle of the vector v.v = 4(cos 125°i + sin 125°j) ||v|| = θ =
1. 1 answer
2. 500 views
This is the second part of a two part question for an online class. It gave me the degree and the zeros and I had to give the
1. 3 answers
2. 733 views
A 5.9 kg bucket of water is raised from a wellby a rope. The acceleration of gravity is 9.81 m/s/s If the upward acceleration of
1. 2 answers
2. 823 views
During a solar eclipse, the moon (ofmass 7.36 × 1022 kg), Earth (of mass 5.98 × 1024 kg), and Sun (of mass 1.99 × 1030 kg)
1. 4 answers
2. 3,391 views
In a certain gear, a bicycle tire with a diameter of 27 inches makes 3 complete revolution of the pedal.If a cyclist is pedaling
1. 3 answers
2. 688 views
The circular blade on a radial arm saw is turning at 293 rad/s at the instant the motor is turned off. In 17.9 s, the speed of
1. 1 answer
2. 483 views
If log 3=a, log 5=b and log 7=c, express log_{15} 7 in terms of a,b and c.
1. 2 answers
2. 1,179 views
Solve the following system by matrix reduction. Write your answer using parameter(s) if necessary. If there is no solution,
1. 1 answer
2. 388 views
Solve the following system by matrix reduction. Write your answer using parameter(s) if necessary. If there is no solution,
1. 1 answer
2. 309 views
Can you get an extremely high gradient of a straight line for instance:m = 14375 I used the formula (y2-y1)/(x2-x1) or have I
1. 1 answer
2. 432 views
Leonard ran 4 miles more than Sheldon ran. The sum of their distances is 26 miles. How far did Sheldon run? The domaina. Define
1. 2 answers
2. 540 views
Need help with my final project.Create and test a java program that will simulate customers waiting in line in a bank teller
1. 1 answer
2. 450 views
A projectile is fired from a height of h meters at a speed of 55m/s and at an angle of 10 degrees above the horizontal. The
1. 4 answers
2. 601 views
Solve:3^x=7 3^2x+1=12 4^x-6=2^3x
1. 1 answer
2. 340 views
Find the 7th term of geometric progression if the second term is 75, the 5th term,3/5.
1. 2 answers
2. 1,152 views
Solve:3^(2x+1)=12 Show your workings:
1. 3 answers
2. 326 views
Solve:4^(x-6)=2^(3x) show all workings.
1. 1 answer
2. 344 views
Solve for X:(x-6)log4=(3x)log2
1. 2 answers
2. 499 views
A 56.5kg, 2.4m uniform ladder leans against a frictionless wall. A 95.5kg person is standing up 0.8m from the bottom of the
1. 3 answers
2. 2,319 views
Your cellphone plan costs $42.76 per month plus $0.14 for each text message you send or receive. You have at most $60 to spend
1. 7 answers
2. 521 views
A box is sliding up an incline that makes an angle of 21.8° with respect to the horizontal. The coefficient of kinetic friction
1. 2 answers
2. 715 views
A golfer rides in a golf cart at an average speed of 3.93 m/s for 43.3 s. She then gets out of the cart and starts walking at an
1. 1 answer
2. 438 views

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