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based on the incidence of petal alcohol syndrome in various ethnic groups
1. 1 answer
2. 104 views
Solving Quadratic Equations by Taking Square RootsIaI am stuck on these 2, please help. 7x^2 - 4 = 3 8v^2 - 7 = 713
1. 1 answer
2. 446 views
When do skydivers use decimals
1. 3 answers
2. 492 views
(a) If your relaxed eye has a refractive power of 56.0 D, and your lens-to-retina distance is 2.35 cm, determine if you are
1. 2 answers
2. 605 views
A motor takes 5 s to go from 30 rad/s to 130 rad/s at constant angular acceleration. The total angle through which its shaft
1. 2 answers
2. 757 views
-4 - x = -5
1. 1 answer
2. 246 views
Find constants a and b in the function ax^b/ln(x) such that f(1/5)=1 and there is a local min at x=1/5
1. 4 answers
2. 11,922 views
A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas
1. 6 answers
2. 18,251 views
Company is planning to buy a machinery at a cost of $20 million. This machine will be used for 10 years. The machine will bring
1. 2 answers
2. 588 views
After Victor recovers from the first of the several emotional and physical breakdowns, he is feeling much better and enjoying
1. 3 answers
2. 765 views
19>-n/5+9
1. 1 answer
2. 267 views
A 18.6 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 202 N and
1. 2 answers
2. 665 views
If a curve with a radius of 91.5 m is perfectly banked for a car traveling 77.4 km/h, what must be the coefficient of static
1. 1 answer
2. 782 views
How many revolutions per minute would a 15.6 m diameter Ferris wheel need to make for the passengers to feel "weightless" at the
1. 1 answer
2. 749 views
At what minimum speed must a roller coaster be traveling when upside down at the top of a circle so that the passengers will not
1. 3 answers
2. 812 views
A projectile is launched with an initial speed V0. At its highest point, the projectile's speed is V0/2 . What was the launch
1. 3 answers
2. 936 views
Eddie the Eagle, British Olympic ski jumper, is attempting his most mediocre jump yet. After leaving the end of the ski ramp, he
1. 2 answers
2. 1,083 views
A golfer, standing on a fairway, hits a shot to a green that is elevated 5.50 m above the point where she is standing. The ball
1. 4 answers
2. 4,810 views
What is the y-component of a vector in the x-y plane whose magnitude is 87.8 and whose x-component is 64.9?
1. 2 answers
2. 1,014 views
A football is kicked at ground level with a speed of 15.4 m/s at an angle of 34.7° to the horizontal. How much later does it
1. 2 answers
2. 578 views
Romeo is chucking pebbles gently up to Juliet's window and he wants the pebbles to hit the window with only a horizontal
1. 3 answers
2. 2,026 views
The length of a rectangular board is 10 cm longer than its width. The width of the board is 26 cm. the board is cut into 9 equal
1. 4 answers
2. 1,305 views
Come up with a thesis statement which could be supported by 3 points using: humans and greed.
1. 1 answer
2. 407 views
A solution of H2SO4(aq) with a molal concentration of 1.66 m has a density of 1.104 g/mL. What is the molar concentration of
1. 3 answers
2. 2,558 views
A solution is made by dissolving 0.624 mol of nonelectrolyte solute in 795 g of benzene. Calculate the freezing point and
1. 1 answer
2. 643 views
How would I solve equations with variables on both sides? Please help!
1. 4 answers
2. 491 views
A sports car moving at constant speed travels 150 meters in 5.4 seconds , then brakes and comes to a stop in 3.9 secondsWhat is
1. 3 answers
2. 924 views
You are planning an experiment that requires 0.0610 mol of nitrogen monoxide gas (NO). What volume would you need at STP?Answer
1. 4 answers
2. 1,576 views
What pressure would be required for neon at 25 degrees C to have the same density as argon at 25 degress C and 1.00 atm?
1. 2 answers
2. 731 views
What pressure would be required for neon at 25 degrees C to have the same density as argon at 25 degress C and 1.00 atm?
1. 3 answers
2. 609 views
What pressure would be required for neon at 25 degrees C to have the same density as argon at 25 degress C and 1.00 atm?
1. 2 answers
2. 510 views
Two spherical objects with a mass of 2.88 kg each are placed at a distance of 2.12 m apart. How many electrons need to leave
1. 3 answers
2. 2,332 views
Vector A has magnitude 37 units and direction, counterclockwise from east, of 12.9 degrees. What is the value of its x component
1. 2 answers
2. 1,253 views
Both Fe2+ and Cd2+ are precipitated by sulfide. However, they can be quantitatively separated through pH adjustment. You are
1. 2 answers
2. 635 views
Calculate the pH range required to separate 99.99% of Cr3+ from Zn2+ by precipitation of Cr(OH)3(s) in a solution that is
1. 2 answers
2. 526 views
The solubility products of AgBr and Ag3PO4 are 5.0 10-13 and 1.8 10-18, respectively. If Ag+ is added (without changing the
1. 3 answers
2. 839 views
use the Ksp of SnS2= 1.0X10^-70 and calculate the pH of a hydrogen sulfide solution needed to precipitate 99.99% of the tin(IV)
1. 3 answers
2. 584 views
If 29.0 mL of 0.10 M Ba(NO3)2 are added to 76.0 mL of 0.21 M Na2CO3, will BaCO3 precipitate? Calculate Q
1. 2 answers
2. 759 views
A solution containing Pb2+ and a solution containing IO3- are poured together and quickly mixed. After mixing, the solution
1. 2 answers
2. 1,062 views
What concentration of chloride ion is required to precipitate 99.9% of the lead ion from a solution with [Pb^2+]= 0.045 mol/L ?
1. 1 answer
2. 419 views
Let's explore the efficiency of chloride ion precipitation in seperating Ag^+ from Pb^2+ in a solution. Suppose that [Pb^2+]=
1. 2 answers
2. 560 views
A container is charged with hydrogen, nitrogen, and ammonia gases at 120°C and the system was allowed to reach equilibrium.
1. 3 answers
2. 2,445 views
Consider the following equilibrium reaction: NaHCO3(s) Na2CO3(s) + H2O(g) + CO2(g) When 100 g of sodium hydrogen carbonate are
1. 2 answers
2. 1,122 views
Nubia was a kingdom to the south of egypt true or false
1. 4 answers
2. 668 views
You have been retained to analyze how many check-in agents should be used at a check-in counter for a large hotel. During normal
1. 1 answer
2. 499 views
A wave of amplitude 0.37 m interferes with a second wave of amplitude 0.18 m is traveling in the same direction. What is the
1. 1 answer
2. 668 views
About 3/4 of the track team are girls. About 3/4 of these girls are in 8 th grade. What fraction of th e students are grade 8
1. 3 answers
2. 2,262 views
What is 2/5 of 6?
1. 2 answers
2. 674 views
: A 50kg wooden crate rests on a horizontal concrete floor. The coefficient of friction is u=0.7. What is the magnitude of the
1. 2 answers
2. 727 views
A student heats 4.00 g of a blue compound, which reacts completely to produce 2.56 g of a white compound and an unknown amount
1. 1 answer
2. 430 views

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