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How much heat energy is needed to change 0.25kg of water at 100°C to steam at 100°C? Show your work.Please don't give me the
1. 1 answer
2. 1,102 views
The bottom 30% of the students failed an end of semester exam. The mean for the test was 130 and the standard deviation was 27.
1. 2 answers
2. 1,313 views
How much heat energy is needed to change 0.25kg of water at 100°C to steam at 100°C? Show your work.Please don't give me the
1. 1 answer
2. 702 views
All values of theta are positive. From left to right, the first peak occurs at (pi/2,1) and the second peak occurs at (9pi/2).A.
1. 1 answer
2. 602 views
Two forces are applied to a 0.5 kg hockey puck causing it to accelerate. The first force has a magnitude of 10.0 N and is
1. 1 answer
2. 995 views
Ricky took a survey in the fifth grade and found that 2/3 of the students ride the bus to school and 1/4 of the students walk.
1. 2 answers
2. 1,884 views
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a
1. 1 answer
2. 1,517 views
Find the measure of each exterior angle of a regular polygon whose central angle measures 120 degrees.
1. 1 answer
2. 800 views
Find the measure of each interior angle of a regular polygon whose central angle measures 60 degrees.
1. 1 answer
2. 814 views
I have a dilemma; my English professor doesn’t give us our grades so I currently don’t know what percent I am at in the
1. 4 answers
2. 798 views
It is a riddle:We see it every morning, it has very many colours. At one point we all have in our lives Please help me solve
1. 3 answers
2. 640 views
What is the reaction of the earth pulling down on a pen that is lying on a table
1. 1 answer
2. 435 views
2.7/9.0 x 10^(-5)-(-6) = ?I can't figure it out :'c
1. 1 answer
2. 318 views
I added more of my ideas: Is the main conflict in Return of the soldier between Chris's desire to return to the past and his
1. 1 answer
2. 501 views
Rewrote This because I added more of my ideas: Is the main conflict in Return of the soldier between Chris's desire to return to
1. 0 answers
2. 543 views
Is the main conflict in Return of the soldier between Chris's desire to return to the past and his responsibility to the
1. 0 answers
2. 514 views
There are 5 rock songs, 6 country songs, and 3 hip-hop songs. How many different albums can be formed using the songs if the
1. 0 answers
2. 569 views
There have been two ways on making transuranium elements: neutron bombardment anda)beta bombardment b)gamma bombardment
1. 1 answer
2. 841 views
A potter is making cups and plates. It takes her 6 minutes to make a cup and 3 minutes to make a plate. Each cup uses 3/4lb. of
1. 1 answer
2. 1,483 views
It is the ugliest but has so many colors
1. 0 answers
2. 313 views
If a run is 10 feet and the slope 1% what is the rise?
1. 1 answer
2. 649 views
two airplanes leave an airport at the same time one hour later they are 189km/hr apart. if one plane traveled 168km/hr and the
1. 5 answers
2. 7,065 views
11. If a navigation error puts a plane 2.5° off course, how far off course is the plane after flying for 2 hours at 152 miles
1. 1 answer
2. 747 views
10. A person notices that the angle of elevation from where he is standing to the top of a pole is 40°. Then he backs up12 feet
1. 1 answer
2. 624 views
9. A boat travels on a course of bearing N37°W for 83 miles. How many miles north and how many miles west has theboat traveled?
1. 1 answer
2. 608 views
prove this identity:secθ +1/tanθ = tanθ/secθ −1
1. 1 answer
2. 742 views
28. Find all solutions if 0° ≤θ <360°. 4sin2(3θ)−3= 0
1. 1 answer
2. 400 views
27. Solve for all radian solutions. sinx = −2cos x
1. 1 answer
2. 442 views
26. Solve for 0≤ x <2π .2+3cos x = 2sin2 x −1
1. 1 answer
2. 384 views
24. Let cscθ = 5 with θ ∈QII and find the following.*use double identity a) cosθ b) cotθ
1. 1 answer
2. 503 views
2.4 (n - 1)= 12
1. 1 answer
2. 291 views
How 12in patio brick will fit a 13ft long 7ft wide space
1. 1 answer
2. 405 views
A group consists of 5 boys and 6 girls how many committees of five can be formed that consists of 2 boys and 3 girls?
1. 1 answer
2. 1,414 views
if x=4 which of the following expression DOES NOT equil 9?
1. 1 answer
2. 901 views
I need help graphing y=csc(x+pi/4) on the interval -pi/2<x<3pi/2
1. 1 answer
2. 393 views
An object hanging on a scale reads 24.0g when submerged in water, but 48.0 g when submerged in oil (specific gravity 0.80) Find
1. 1 answer
2. 622 views
The number of bacteria in a certain culture T hours from now grows according to A=800(3)^t what will the count be in 3.12 hours
1. 1 answer
2. 524 views
The five masses below all have the same radius and a cylindrically symmetric mass distribution. They start to roll down an
1. 0 answers
2. 633 views
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. A spherical helium balloon lifts
1. 1 answer
2. 2,313 views
Each week Susie washes dishes three nights,washes clothes one night,empties trash cans two nights,and cook supper one night.If
1. 2 answers
2. 623 views
Jamie won the spelling bee.she completed 8 more rounds than Antonio,who completed three times as many rounds as beth.If beth
1. 1 answer
2. 667 views
Sue, an experienced shipping clerk, can fill a certain order in 5 hours. Jim, a new clerk, needs 12 hours to do the same job.
1. 3 answers
2. 1,369 views
Person A can paint the neighbor's house 2 times as fast as Person B. The year A and B worked together, it took them 5 days. How
1. 4 answers
2. 1,087 views
For how many integers x does a triangle with side lengths 10,29 and x have all its angles acute. how do I know which side is the
1. 1 answer
2. 537 views
For how many integers x does a triangle with side lengths 10.29 and x have all its angles acute. how do I know which side is the
1. 0 answers
2. 382 views
Refracting telescopes use lenses. Reflecting telescopes use mirrors. However, both types of telescopes have something in common.
1. 3 answers
2. 1,033 views
Hill crest public school held its annual skating party and 3/4 of the 480 students came.Of the students who came,1/5 brought
1. 3 answers
2. 479 views
According to Black Elk, what atrocities took place at Wounded Knee? How did President Harrison describe these atrocities?Whom
1. 3 answers
2. 1,784 views
Discuss the different approaches of the federal government toward the Plains Indians
1. 1 answer
2. 1,214 views
A 3 by 5 inch picture is put into frame with a mat that has width x. Draw picture inside the frame, write the expression of the
1. 1 answer
2. 1,312 views
The length of a rectangle is four more than five times its width. Its perimeter is 92 inches. Find its dimensions length
1. 1 answer
2. 1,094 views
The length of a rectangle is two more than four times its width. Its perimeter is 54 inches. Find its dimensions length
1. 1 answer
2. 1,044 views
1) a) Decide if (q  ( p~ q))~ p is a tautology using propositional equivalence and thelaws of logic. b) Prove that the
1. 1 answer
2. 617 views
A bag contains 5 red and 4 green discs , three discs are randomly drawn from a bag what is the probability at least 1 is red and
1. 1 answer
2. 742 views
I need help solving this problem.Question: At what points will the line y=-x intersect the unit circle x2+y2=1?
1. 1 answer
2. 692 views
A is 2 years older than B. The sum of their ages is 24. How old is A and how old is B?
1. 2 answers
2. 353 views
the question is "Joe rode his bike over a piece of gum. Joe continued riding his bike at a constant rate. At time t=1.25 seconds
1. 1 answer
2. 1,741 views
Take this kiss upon the brow!And, in parting from you now, Thus much let me avow — You are not wrong, who deem That my days
1. 3 answers
2. 1,069 views
Take this kiss upon the brow!And, in parting from you now, Thus much let me avow — You are not wrong, who deem That my days
1. 7 answers
2. 1,179 views
A 26 meter guy wire is attached to an upright pole 24 meters from the ground. How far from the pole must the wire be anchored in
1. 2 answers
2. 1,600 views
A rectangular tank 28cm long and 18cm wide was filled with water to a dept of 7cm. When 12 marbles were added the level rose to
1. 1 answer
2. 511 views
Can you show or help me with this problem: Aquaman drinks 48 ounces of water a day. How many pints of water is that a week? I
1. 3 answers
2. 589 views
Considering the line segment joining A(-5, 2) and B(7, 8), find an equation, in the form of Ax+By=C, that expressed the fact
1. 1 answer
2. 515 views
Simplify the following, using only positive exponents. Do not evaluate.Exponetial functions c) f^3 g−^1/f^2 g^3 d)
1. 1 answer
2. 438 views
A 53.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 6.60 s. The elastic
1. 1 answer
2. 836 views
Is it necessary to know the exact volume of the “unknown” acid or base to be titrates.
1. 1 answer
2. 736 views
How many grams of cesium chloride (CsCl) will be needed to make 750. mL of a 0.100 MCsCl aqueous solution? The formula mass of
1. 1 answer
2. 616 views
A compound that you are studying is soluble in CCl4 but not in water. Would you predict thatthe compound is polar or nonpolar?
1. 1 answer
2. 741 views
How many grams of cesium chloride (CsCl) will be needed to make 750. mL of a 0.100 M CsCl aqueous solution? The formula mass of
1. 0 answers
2. 558 views
C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2If you start with 2.09 grams of C4H6O3 how many grams aspirin (C9H8O4) can you make?
1. 0 answers
2. 836 views
What is the circumference of d=2.1cm using 22/7
1. 1 answer
2. 491 views
The town of Seaside needs to build a new power plant. The old coal burning plant produces too much pollution and is no longer
1. 3 answers
2. 2,945 views
For which element is the gaining of an electron most exothermic?a)Li b)N c)F d)B *explain
1. 1 answer
2. 2,805 views
Please someone help me figure this one out with three reasons.A group of researchers from a local lab are trying to get funding
1. 1 answer
2. 678 views
Which molecule contains a polar covalent bond?a)C2H4 b)ZnS c)LiI d)NBr3 e)AgI
1. 1 answer
2. 1,822 views
Definition of Philosophy??And Definition of logic ??
1. 2 answers
2. 516 views
Use the Left and Right Riemann Sums with 100 rectangle to estimate the (signed) area under the curve of y=−2x+1 on the
1. 1 answer
2. 2,032 views
Use the Left and Right Riemann Sums with 80 rectangle to estimate the (signed) area under the curve of y=e^(3x)−5 on the
1. 1 answer
2. 1,402 views
Find the points on the curve y=x2+2 closest to the point (0,3). Enter the coordinate with the smallest x-value first and round
1. 1 answer
2. 1,939 views
Sulfur dioxide SO2 is released in the combustion of coal. Scrubbers use aqueous slurries of Ca(OH)2 to remove the sulfur dioxide
1. 1 answer
2. 874 views
is this the answer to B )CH3CH2OH + 3O2 → 2CO2 + 3H2O In winemaking, the sugars in grapes undergo fermentation by yeast to
1. 1 answer
2. 1,773 views
is this the answer to B )CH3CH2OH + 3O2 → 2CO2 + 3H2O In winemaking, the sugars in grapes undergo fermentation by yeast to
1. 0 answers
2. 1,138 views
help!!!!is this the answer to B ) C2H5OH(liq)+ 3O2(g) --> 2CO2(g) +3H2O(liq) In winemaking, the sugars in grapes undergo
1. 0 answers
2. 856 views
is this the answer to B )C2H5OH(liq)+ 3O2(g) --> 2CO2(g) +3H2O(liq) In winemaking, the sugars in grapes undergo fermentation by
1. 1 answer
2. 706 views
is this the answer to B )C2H5OH(liq)+ 3O2(g) --> 2CO2(g) +3H2O(liq) In winemaking, the sugars in grapes undergo fermentation by
1. 0 answers
2. 724 views
is this right?C2H6O + 3O2 = 2CO2 + 3H2O In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and
1. 1 answer
2. 1,138 views
I don't get it!!In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular
1. 1 answer
2. 594 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 1 answer
2. 846 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 617 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 737 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 523 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 555 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 604 views
the distance from the sun to earth is 1.496 x10 ^8 km. how long does it take light to travel from the sun to earthHow do you
1. 0 answers
2. 1,282 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 691 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 1 answer
2. 849 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 999 views
In winemaking, the sugars in grapes undergo fermentation by yeast to yield CH3CH2OH and CO2. During cellular respiration, sugar
1. 0 answers
2. 875 views
In winemaking, the sugars in grapes undergo fermentationby yeast to yield CH3CH2OH and CO2. During cellularrespiration, sugar
1. 0 answers
2. 578 views
In winemaking, the sugars in grapes undergo fermentationby yeast to yield CH3CH2OH and CO2. During cellularrespiration, sugar
1. 0 answers
2. 596 views

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