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Questions (77)

how you can obtain pure samples from amixture corntaining ammonium chrolide, copperoxideand pttasium curbonate
1. 1 answer
2. 132 views
water was added to 120.0g of a salt MCl2, to produce 60.0cm^3 of a saturated solution at 25celsius. its solubility at 25 celsius
1. 1 answer
2. 700 views
$54 547 + 0.45 × $_____=$62 197
1. 1 answer
2. 329 views
a man spends 3/4 of his salary on food rent and transport and 1/10 of the remainder on clothes.what percentage of his salary is
1. 1 answer
2. 390 views
vectors
1. 1 answer
2. 240 views
solve the sum of the first 9 terms of an A.P is 72 and the sum of the next 4 terms is72 .find the A.P.
1. 3 answers
2. 221 views
the sum of the first 9 terms of an A.p is 72 and the sum of the next 4 terms is 71. find the A.psolution
1. 1 answer
2. 371 views
the sum of the first 9 terms of an A.p is 72 and the sum of the next 4 terms is 71. find the A.p. solution
1. 2 answers
2. 333 views
the vertical angle of a cone is 70 degree and its slant height is 11cm. Calculate the height of the cone
1. 1 answer
2. 819 views
parts of a pole were painted red,blue and yellow, .3/5 of the pole was painted red and 7/8 was painted blue. what was the part
1. 1 answer
2. 537 views
Calculate the final centigrade temperature required to change 20 litres of gas at 120°C and 1 atmosphere to 25 litres at 2
1. 1 answer
2. 400 views
3/5 + blank = 1 1/2trying to figure out the blank
1. 2 answers
2. 437 views
blank + 1/2 = 1 2/3im trying to figure out the blank
1. 2 answers
2. 456 views
in a certain automobile when five passenger get in their total mass being 360kg the spring of the suspension are compressed a
1. 1 answer
2. 544 views
the first term of a gp is twice its common ratio. find the sum of the first two terms of the progression if its sum to infinity
1. 6 answers
2. 2,472 views
the first term of an ap is -8 the ratio of the 7th to the 9th term is 5:8 calculate the common difference of the progression
1. 2 answers
2. 981 views
if (3-x), (6),(7-x) is a geometric sequence calculate (a)the two possible values of x (b) common ratio (c) sum of the sequence
1. 1 answer
2. 738 views
A mass 10kg moves with a velocity of 4m/s .find the kinetic energy
1. 1 answer
2. 957 views
How to prepare 0.5m of HCL using 500ml standard flask
1. 0 answers
2. 582 views
If 16 men can construct 800 tables in 9 days how long will it take 15 men to construct 1000 tables if they work at the same rate
1. 1 answer
2. 682 views
A model of a rectangular patio at a landscaping business will be enlarged by a scale factor of 2 when it is installed in a
1. 3 answers
2. 1,404 views
How much work isneeded to stop a 20g bullet moving with a speed of 150m/s
1. 1 answer
2. 672 views
A baseball diamond is a square with each side 90 feet long. What is the straight-line distance from third base to first base?
1. 1 answer
2. 638 views
The north wall of a barn is a rectangle 25 feet high and 60 feet long. There are five windows in the wall, each 8 by 10 feet. If
1. 1 answer
2. 639 views
P,Q and R are points on the same horizontal plane .the bearing of Q from P is 150° and the bearing of R from Q is 060°. if
1. 1 answer
2. 3,300 views
12,b,75 are consecutive terms of a geometrical sequence what is the common ratio?
1. 2 answers
2. 788 views
A signal lac has six flags of which 1is blue ,two z white,3 ar red.it sends messages hostin flags in a flagpole.d messages ar
1. 1 answer
2. 590 views
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 21.3 °C the air gap between the
1. 0 answers
2. 812 views
A person who weighs 717 N is riding a 80-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally
1. 1 answer
2. 648 views
The Eiffel Tower is a steel structure whose height increases by 19.0 cm when the temperature changes from -9 to +41 oC. What is
1. 0 answers
2. 587 views
2.Write only the select case statements forthe following problem statement. The marital code of a person is stored in the
1. 3 answers
2. 548 views
The first term of an AP is 8. The ratio of d 11th term to the 7th term is 5:8 calculate the common difference
1. 1 answer
2. 487 views
13feet ladder is placed 5feet away from the wall . the distance from the ground straight up to the top of the mall is 13 feet.
1. 1 answer
2. 464 views
PQ is a vertical tower 95m high, the points R and S are on the same horizontal plane as Q, the angle of elevation of P from R is
1. 1 answer
2. 572 views
For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are
1. 1 answer
2. 531 views
4. In applying cladistic analysis to construct a phylogeny of the animal kingdom, why would the presence of flagella be a poor
1. 0 answers
2. 451 views
Which of the following is an example of active reading?A. Skimming over information and taking notes. B. Reviewing a chapter,
1. 1 answer
2. 1,343 views
A block with mass = 5.0 rests on a frictionless table and is attached by a horizontal spring ( = 130 ) to a wall. A second
1. 2 answers
2. 926 views
A child bounces a 54 g superball on the side-walk. The velocity change of the superball is from 23 m/s downward to 19 m/s
1. 1 answer
2. 1,056 views
i need help with my genisis essay and it cant involve religion
1. 1 answer
2. 410 views
a puppy runs a distance of 20m to its mother ina time 5s.what is the puppy's speed?
1. 1 answer
2. 401 views
Put these sentences in order 1-6, based on whether it is the TS(1), GD1(2), SD1(3), GD2(4), SD2(5), CS(6), of a body paragraph
1. 1 answer
2. 555 views
The number of dogs and chickens on a farm add up to 14. The number of legs between them is 36. How many dogs and how many
1. 1 answer
2. 593 views
if a force of 140 neaten is applied by a car over a distance of 10 metre within 10 second, calculate.(i) work done by the car.
1. 1 answer
2. 466 views
boat travels 160 miles downstream in the same time that it takes to go 96 upstream. the pead of the stream is 6 mph. what is the
1. 1 answer
2. 493 views
what is the estimated product of 3 2/3 x 5 1/9
1. 17 answers
2. 443 views
During each shift as a bus driver, Haley drives between 80 and 140 miles. She started the month with 4,500 miles driven.What is
1. 1 answer
2. 380 views
the 2nd, 3rd, and 4th term of an arithemetic progression are x-2, 5 and x+2 respectively, calculate the value of x and hence
1. 2 answers
2. 2,610 views
4. A large company insists that all job applicants who are invited for an interview take a psychometric test. The results of
1. 1 answer
2. 868 views
According to a bank, the time taken by its customers to use cash dispensing machines is normally distributed with a mean of 18
1. 1 answer
2. 1,107 views
concentrated sulfuric acid has a density of 1.84 g/ml. calculate the mass in grams of 1.00 liter of this acid.
1. 1 answer
2. 1,455 views
what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?
1. 1 answer
2. 446 views
A cross country team race is about to begin and team Delta decides to use their one-dimensional kinematics knowledge that they
1. 2 answers
2. 762 views
Find the equation of the parabola with the vertex at the origin and directrix y =5
1. 1 answer
2. 1,529 views
You are given a vector in the xy plane that has a magnitude of 94.0 units and a y component of -44.0 units.A. What are the two
1. 1 answer
2. 2,258 views
Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of
1. 1 answer
2. 3,187 views
An unmarked police car traveling a constant 90 km/h is passed by a speeder. Precisely 2.00 s after the speeder passes, the
1. 2 answers
2. 1,294 views
Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s:(a) for an
1. 2 answers
2. 1,064 views
A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t=1 0.0s.How far did it move between t=2.0s and t=6.0s?
1. 2 answers
2. 1,141 views
A faucet leaks at the rate of four drops each second.If air resistance is neglected, determine the vertical separation between
1. 1 answer
2. 412 views
an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of
1. 5 answers
2. 3,620 views
3. You are going to plant trees in your hilly backyard. Tree A is located at coordinates (1,4) and Tree B is located at (5,12).
1. 1 answer
2. 584 views
pls help! discuss the effect of acids and alkalis on DNA & RNA. Thanks.
1. 0 answers
2. 397 views
Which numerical expression show 4 quarts more than 12 quarts?
1. 0 answers
2. 354 views
If a sphere has radius 5 m. what is the surface area of the sphere?
1. 2 answers
2. 432 views
factor trinomial 9x(2) + 9x + 2i do not know how to type the 9x and the little x over the 2 ( to the x power ) thank you for
1. 1 answer
2. 395 views
a bicyclist has a mass of 50 kg. Intial velocity is 20 m/s as she hits the bottom of the hill. Doing no work, she reaches the
1. 1 answer
2. 431 views
||v|| = 8 u = <5, 6>find the vector
1. 0 answers
2. 331 views
1. The Monley Corporation of New Jersey has gross profits of $980,000 and $260,000 in depreciation expense. The Majors
1. 0 answers
2. 545 views
Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on
1. 5 answers
2. 4,617 views
(Points: 10) For the following:i) HClO4 > HBrO4 > HIO4 ii) NH3 > PH3 > AsH3 > SbH3 iii) HOClO3 > HOClO2 > HOClO > HOCl iv)
1. 1 answer
2. 1,500 views
(Points: 10) For the following:i) HClO4 > HBrO4 > HIO4 ii) NH3 > PH3 > AsH3 > SbH3 iii) HOClO3 > HOClO2 > HOClO > HOCl iv)
1. 0 answers
2. 1,019 views
how do i find the product. Extimate to check or 0.5 x 28
1. 2 answers
2. 298 views
how do u equal $0.55 with two coins without useing a nickel and us coins
1. 1 answer
2. 473 views
the larger of two numbers is 1 more than twice the smaller.the sum of the numbers is 20 less than three times the larger.find
1. 6 answers
2. 802 views
Any experts in communications/information theory can help me on this?Consider a fiber optic communication channel with cross
1. 0 answers
2. 475 views
When we are evaluating an issue and we have considered everything, what three choices do we have as to what we decide on what
1. 0 answers
2. 409 views

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