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Raj
Questions and answers by visitors named
Raj
, page 2
Questions (360)
How many millimeters of a 15.0%, by mass solution of KOH(aq)(d = 1.14 g/ml ) are required to produce 26.0 L of a solution with
3 answers
494 views
How many millimeters of this solution should be diluted with water to produce 650 mL of a solution with pH= 11.50? 6.8% ammonia
4 answers
624 views
What is [H3O+] in a solution obtained by dissolving 215 mL HCl(g), measured at 23 degrees C and 757 mmHg, in 4.30 L of aqueous
2 answers
731 views
45.00 mL of 1.55×10^−2 M HI(aq) is mixed with 85.00 mL of 1.08×10^−2 M KOH(aq). What is the pH of the solution?
6 answers
2,056 views
PartA: What volume of 10.0M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? TrisHCl is a weak
30 answers
6,026 views
The length of the base of a triangle is 4 times its altitude. If the area the triangle is 162 cm2, find the altitude.
1 answer
494 views
Can anyone help me get some points?
What can the Church do today to make itself more relevant to Generation X?
1 answer
291 views
a 500 ml portion of .0020 M Na2C2O4 solution is able to dissolve .47g of MgC2O4. What is the Ksp for MgC2O4
3 answers
670 views
When excess solid Mg(OH)2 is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated solution has pH = 9.30.
7 answers
4,938 views
The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly
1 answer
518 views
Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb
1 answer
429 views
Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb
1 answer
509 views
A 20 ton truck is pulling a 5 ton trailer.their common uniform velocity is 54 kmph.if the frictional force is 20N per both the
5 answers
737 views
use the definition of the derivative to calculate f'(x), if f(x)= SQRT(2x) and find the equations of the tangent line and the
2 answers
508 views
Find all values of x, where the graph of
y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.
1 answer
383 views
Find all values of x, where the graph of
y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.
1 answer
373 views
Use a simple area formula from geometry to find the area under function A(x) that gives the area under the function f(x) = 9 on
3 answers
1,068 views
n
lim(n→+∞) ∑ (3/4)^k = k=1
4 answers
305 views
n
lim(n→+∞) ∑ (3/4)^k = k=1 the n is supposed to be above the sigma sign and the k=1 is supposed to be below the sigma
3 answers
464 views
A right triangle has a base that is 2 more than twice the height. Find the length of the base for the triangle. If the area is
2 answers
830 views
Please advise on the following:
From 1993 to 2003 the cumulative number N of AIDS cases in thousands can be approximated by,
1 answer
425 views
Assume that x>0 and y>0. If y=5sqrt{x+9} and dx/dt = 2, find dy/dt when x=7.
2 answers
540 views
let theta (in radians) be an acute angle in a right triangle, and let x and y, respectively, be the lenghts of the sides
2 answers
595 views
let θ(in radians) be an acute angle in a right triangle, and let x and y, respectively, be the lenghts of the sides adjacent
2 answers
531 views
If a is the greatest common factor of 72 and 48, and if b is the greatest common factor of 108 and 144, what is the least common
3 answers
437 views
Calculate ∆H˚ for the following reaction using the given bond dissociation energies.
CH4 (g) + 2O2 (g) --> CO2 (g) + 2H2O (g)
3 answers
1,377 views
A man is 4 times as old as his son.After 16 years he will be only twice as old as his son. find their present ages.
6 answers
631 views
Find the value of K such that the following trinomials can be factored over the integers:
1. 36x^2+18x+K 2. 3x^2 - 16x+K
2 answers
1,207 views
had a 1 day sale. the original bike price was $325. on sale the same bike was $276.25. what is the percent reduction for this
1 answer
446 views
A souvenir mug sells for 8 dollars. Kendra gives the clerk 9 dollars and receives 56 cents. what is the sales tax rate?
Thx!
1 answer
349 views
can you check my answers if they are correct thank you
1.) A convertible bond is currently selling for $945. It is convertible
1 answer
1,137 views
The light from the sun is found to have a maximum intensity near the wave length of 470nm assuming the surface of the sun as a
2 answers
649 views
The original 10 ml (KIO3) solution is 0.020M is mixed with 10 mL of 0.0020M NaHSO3 which give a total volume of 20 mL. Calculate
2 answers
900 views
Ram Dubey recently purchased a chain of dry cleaners in North Uttar Pradesh. Although the business is making a modest profit
2 answers
766 views
An ocean liner is traveling at 5m/s. A passenger on deck walks towards the rear of the ship at a rate of 4m/s. After walking 30
3 answers
482 views
Solve the differential and initial value problem:
x(dy/dx) + 1 = y^2 y(1)=0 I tried using bernoulli and it didn't quite work.
2 answers
1,174 views
∫[dy/(y^2-1)]
How do i solve this?
1 answer
289 views
Assume that the rate of population growth of ants is given by the equation:
dP/dt=.1P(1 - P/730)-(129000/7300) a. If P(0)=150,
3 answers
562 views
Calculate the value of Qc for the reaction above if 2.30 moles of NO2, 1.50 moles of NO, and 1.20 moles of O2 are placed in a
3 answers
519 views
How do the vapour pressure of two substance at the same temperature but with different strengths of the inter-molecular forces
1 answer
471 views
The Daily Gazette accepts classified ads in several categories. For most ads, the newspaper charges 10 cents per word for the
1 answer
631 views
John read 1/4 of pages of book on Saturday and another 2/3 of pages on Sunday. She read the last 5 pages on Monday . What was
3 answers
765 views
The figure below shows a plot of potential energy U versus position x of a 1.30 kg particle that can travel only along an x
1 answer
1,067 views
Tell whether the each statement is sometimes, always or never true
1) If n is zero then x^-n is 1 2) If n is negative integer
3 answers
532 views
Is sodium isotonic with Mg²+
1 answer
455 views
You have to prepare a pH 5.00 buffer, and you have the following 0.10M solutions available: HCOOH, HCOONa, CH3COOH, CH3COONa,
5 answers
4,752 views
A 14 g bullet is fired into the bob of a ballistic pendulum of mass 1.6 kg. When the bob is at its maximum height, the strings
2 answers
695 views
Pl find out hcf using division method
180,252,576
10 answers
3,348 views
find two positive real numbers x and y such that their product is 800 and x+2y is as small as possible
4 answers
3,231 views
Find two positive real numbers x and y such that they add to 120 and x^(2)y is as large as possible
4 answers
4,612 views
Bd is öne of the diagonal of quad. Abcd.if al | bd and cm| bd ,show that ar(quad.abcd)=1/2xbdx(al+cm)
1 answer
446 views
What is the ionic strength of 0.2 M Na2HPO4 in a solution?
7 answers
7,151 views
A two digit number is such that the product of the digits
is 8. When 18 is added to the number, the digits are reversed. Find the
1 answer
443 views
a man runs a distance of 197.5 km in 200 minutes and he reduced his speed by 5 kmph in every 30 minutes. how much distance he
3 answers
451 views
A plant 73cm tall.how many more centimetres does it have to grow before it is 1 metre tall?
2 answers
518 views
Write 1.5 billion to indian place value system.
1 answer
401 views
A bullet of mass 100g moving with20m/sec .Strikes a wooden plank and peretrates up to 20cm.Calculate the resistance offered by
3 answers
2,445 views
The crew men in space are discussing whether they can crack a wall nut with a hammer.
Man A says that hitting wall nut with a
1 answer
456 views
If 0.01% of electrons are removed from 18 gm water, then calculate the charge produced
in the water.
2 answers
605 views
A hoop of mass 'm' is projected on a floor with linear velocity 'v' and reverse spin 'w'. The
co efficient of friction is 'u'.
1 answer
338 views
Given below are the some of the function of x and t to represent the displacement
(transverse or longitudnal ) of an elastic wave
2 answers
580 views
A square loop,circular loop prepared from a straight wire of length L are moved out of a
uniform magnetic field,acting normal to
1 answer
457 views
What is the life of earth ? explain and why?
1 answer
389 views
What is number?
3 answers
385 views
What is science?
1 answer
454 views
Given that 1/(y-x), 1/2y, and 1/y-z are consecutive terms of an arithmetic progression, prove that x,y, and z are consecutive
5 answers
3,437 views
Given that 1/(y-x), 1/2y, and 1/y-z are consecutive terms of an arithmetic progression, prove that x,y, and z are consecutive
2 answers
584 views
The fifth term of an A.P exceeds twice the second term by 1.The tenth term exceeds twice the fourth term by 3.
Find:1.the first
3 answers
4,614 views
A body of 6 kg rest in limiting equilibrium onan inclined plane whose slope is 30° the plane is raised to a slope of 60 degree
3 answers
1,100 views
One card is drawn at random from the card of 52 cards then what is the probability but the card drawn from face card
2 answers
482 views
the highest test score scott can receive is a 100.The sum of his first four test scores is atleast 360.Find the range of scores
2 answers
535 views
A 150m long train is moving with uniform velocity of 45km/hr.The time taken by the train to cross a bridge of length 850 meters
2 answers
613 views
Find the area of a path 1m wide,running breadth wise across a garden of length=30m and breadth=20m.
3 answers
830 views
why can't man's follow the flight of a song
1 answer
381 views
Why does the reciprocal of a polynomial share the same points as the polynomial function at y = 1 and y = -1
2 answers
909 views
A spring-loaded toy uses a compressed spring to fire a marble out of a
tube. A force of 220 N compresses the spring by 0.14 m.
4 answers
1,270 views
Aunt Sally’s “New Orleans Most Famous Pralines” sells pralines costing $1.10 each to make. If Aunt Sally’s wants a 35%
3 answers
2,360 views
Find percentage composition of K2SO4 in alum.
3 answers
435 views
x^y=y^x ; then find dy/dx
1 answer
402 views
In an A.P. having 100 terms. Its first term is 3, M=5n and Sm/Sn does not depend on n then find second term.
4 answers
497 views
Time is taken for 10 oscillations.
d/cm T1/SEC T2/SEC T3/SEC T D/T 1 25.0 14.68 14.57 14.81 2 30.0 13.90 14.32 14.41 3 35.0 13.28
1 answer
325 views
Please answer i am confused what to plot in y axis and in x axis. I am getting the gradient for this question in negative
3 answers
560 views
How many different selections of four letters from the 12 letters of the word REFRIGERATOR contain no Rs and two Es?
5 answers
1,403 views
A choir consists of 13 sapranos,12 altos,6 tenors, and 7 basses.A group consisting of 10 sapranos, 9 altos, 4 tenors and 7
4 answers
3,189 views
9 cards each of different colors include a pink card and a green card.
1.How many different arrangements do not have the pink
2 answers
596 views
Nine cards, each of a different colour, are to be arranged in a line.
The 9 cards include a pink card and a green card. Consider
1 answer
906 views
This question is about the motion of a firework rocket.
A firework rocket is fired vertically upwards from the ground. It
3 answers
1,203 views
A small aeroplane has 14 seats for passengers. The seats are arranged in 4 rows of 3 seats and a back
row of 2 seats . 12
3 answers
2,027 views
Pegs are to be placed in the four holes shown, one in each hole. The pegs come in different colours and pegs of the same colour
4 answers
2,378 views
How is speed time graph related to resultant force acting on a body?
3 answers
1,064 views
Define non-zero intercept?
3 answers
2,653 views
What is resistive force?
1 answer
349 views
Find the area of quadrilateral ABCD having vertices A(-1,5) , B(-2,6) , C(4,10) and D(3,5)
5 answers
979 views
Find the area of triangle having vertices A(-1,5) , B(-2,6) and C(3,5)
2 answers
493 views
C(4,10) and D(3,5) which is CD is intersected by BE
3 answers
326 views
The point P is reflection of (-2,10) on the line 4x-3y=12. Find the coordinates of P.
5 answers
5,283 views
A skier is pulled up a slope at constant speed. The tension in the wire pulls the skier with a force of 400N that acts at 40
2 answers
1,028 views
Please answer I have solved the numrical part.
A skier is pulled up a slope at constant speed. The tension in the wire pulls the
1 answer
482 views
Answer
A skier is pulled up a slope at constant speed. The tension in the wire pulls the skier with a force of 400N that acts at
3 answers
746 views
What is meant by centre of positive and negative charge do not coincide each other?
1 answer
295 views
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