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Questions Asked on September 21, 2010

A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?
1. 2 answers
2. asked by Johannie
3. 9,894 views
The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol • K. The conversion of 50.0 g of
1. 3 answers
2. asked by Anonymous
3. 6,893 views
Which of the following elements would you expect to gain electrons in chemical changes? (Select all that apply.)gold chromium
1. 5 answers
2. asked by Sara
3. 6,464 views
A baseball pitcher throws a baseball with a speed of 38 . In throwing the baseball, the pitcher accelerates the ball through a
1. 1 answer
2. asked by Anonymous
3. 5,365 views
a cheetah can accelerate from rest to 24 m/s in 2.0 s . Assuming the acceleration is constant over the time interval, a)what is
1. 2 answers
2. asked by tatiana
3. 4,953 views
A chain composed of four identical links is suspended by a rope and does not move. How many force vectors would be drawn on the
1. 1 answer
2. asked by Stanley
3. 4,759 views
When ammonium chloride is dissolved in water, the solution becomes colder.What can you say about the relative magnitudes of the
1. 8 answers
2. asked by Samantha
3. 4,056 views
Find expressions for the quadratic functions whose graphs are shown. One graph has the point (4,2) plotted in which the parabola
1. 1 answer
2. asked by Chelsea
3. 3,820 views
What is the difference between a group and a period in the periodic table?A: The difference between a group and a period in the
1. 5 answers
2. asked by Anonymous
3. 3,802 views
Please helpthe question that I got is: Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at
1. 4 answers
2. asked by Andy
3. 3,611 views
A horizontal force of 100 N is required to push a piece of furniture across a floor at a constant velocity. what is the net
1. 3 answers
2. asked by m
3. 3,168 views
A real estate agent to sell a large apartment complex according to the following commission schedule: $45,000 plus 25% of the
1. 5 answers
2. asked by Amy~
3. 3,060 views
Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at 78 degree Celsius. Knowing that
1. 1 answer
2. asked by Tammy
3. 3,038 views
Three different pairs of numbers that add together to get 1
1. 12 answers
2. asked by Lisa
3. 2,961 views
Write a real world problem that you can solve by writing an equation . The answer to the problem must be 6
1. 4 answers
2. asked by marcus
3. 2,757 views
The manager of a weekend flea market knows from past experience that if he charges x dollars for a rental space at the market,
1. 1 answer
2. asked by Chelsea
3. 2,545 views
A projectile is launched from ground level to the top of a cliff which is 195 m away and 155 m high. If the projectile lands on
1. 1 answer
2. asked by Jamie
3. 2,429 views
a)What mass of water is produced from the complete combustion of 2.30×10−3 g of methane?b)What mass of oxygen is needed for
1. 1 answer
2. asked by Cindy
3. 2,383 views
in a symbiotic relationshipa) both organisms always benefit b) both organisms are harmed c) both organisms never benefit d) at
1. 1 answer
2. asked by pam
3. 2,091 views
Two long, straight wires are separated by 0.12 m. The wires carry currents of 8.0 A in opposite directions, as the drawing
1. 2 answers
2. asked by Anonymous
3. 2,084 views
A man whose mass is 75kg walks up a flight of 12 steps each 20 cm high in 5 seconds . Find the power he develops in watts
1. 6 answers
2. asked by Felie
3. 2,051 views
An old-fashioned single-play vinyl record rotates on a turntable at 46.0 rpm. What are (a) the angular velocity in rad/s and (b)
1. 1 answer
2. asked by madiha
3. 2,037 views
a grocery clerk nstacks three rows of can of fruit for a display, each of the top two rows has 2 fewer cans than the row beneath
1. 2 answers
2. asked by Lizzy
3. 1,969 views
A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr.At what angular speed do the wheels turn? answer is 23.8 but
1. 1 answer
2. asked by venuya
3. 1,936 views
a). What mass of carbon dioxide is produced from the complete combustion of 2.30×10−3g of methane?b)What mass of carbon
1. 3 answers
2. asked by Holly J
3. 1,859 views
The sum of my two digits is 13. I am not divisible by 2. List all possible numbers I could be.
1. 6 answers
2. asked by Jan
3. 1,858 views
calculate the amount of heat released when 50g of water at 100degrees hits the skin, condenses, cools the body to 37 degrees
1. 2 answers
2. asked by christian
3. 1,855 views
if a person has a mass of 75 kg what is his mass in grams
1. 3 answers
2. asked by graice
3. 1,827 views
translate each of the following into a verbal phrase.1.4+3x 2.3x-4 3.2(x+3) 4.5+1/3x 5.2a+3b 6.6x-5 7.1/2x-4 8.x-3/7 9.5x-9y
1. 3 answers
2. asked by Niño Luther
3. 1,816 views
Suppose that the KMnO4 (aq) were standardized by reaction with As2O3.As2O3 + MnO4- + H+ +H2O yields H3AsO4 + Mn2+ (not
1. 1 answer
2. asked by Kyle
3. 1,800 views
1) A jar is filled with mercury and has a volume of 500.mL. What is the mass of mercury in the jar? Show your work for credit.
1. 1 answer
2. asked by Kary
3. 1,758 views
You select 10 cards randomly from a deck of 52 cards.What is the probability that all of the cards selected are face cards (i.e.
1. 3 answers
2. asked by Hanna
3. 1,703 views
A diver running 1.8m/s dives out horizontally from the edge of a vertical cliff and 3.0s later reaches the water below. How high
1. 1 answer
2. asked by Mark
3. 1,671 views
Commercially available concentrated sulfuric acid is 18.0 M H2SO4. Calculate the volume (in mL) of concentrated sulfuric acid
1. 1 answer
2. asked by Jen
3. 1,667 views
How do I write an equation or an inequalityfor this: the product of a number z and 12 is 60
1. 2 answers
2. asked by Lizzy
3. 1,628 views
In the figure, particle A moves along the line y = 26 m with a constant velocity of magnitude 2.6 m/s and parallel to the x
1. 1 answer
2. asked by Anonymous
3. 1,601 views
Calculate the mass, in kg, of each sample.9.62×1026 cadmium atoms.-5.72×1027 nickel atoms. -9.14×1027 manganese atoms.
1. 2 answers
2. asked by isoka
3. 1,600 views
the definition of unifying characteristics? an example of a region in classroom, school and community?
1. 1 answer
2. asked by Amy
3. 1,548 views
A small map shows New York to be 486 miles in a direction 8° north of east from Columbus. The same map shows that Buffalo is
1. 1 answer
2. asked by Anonymous
3. 1,535 views
A 5.10 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the
1. 0 answers
2. asked by Dawn
3. 1,532 views
Monash Company is currently manufacturing part Z911, producing 40,000 units annually. The part is used in the production of
1. 1 answer
2. asked by Ken
3. 1,531 views
a custom printing store is planning on adding painters caps to its product line. For the first year the fixed costs for setting
1. 1 answer
2. asked by Anonymous
3. 1,519 views
Suppose the marginal social cost of television sets is $100. This is constant and equal to the average cost of television sets.
1. 1 answer
2. asked by Barbara
3. 1,473 views
A bus makes a 10 mile journey throuh town. Its top speed is 30mph and its mean speed its mph.Explain why these speeds are
1. 8 answers
2. asked by Lucy
3. 1,470 views
After you work out at the gym on a stationary bike for 43.0 minutes, the distance guage indicated that you have traveled 14.8
1. 1 answer
2. asked by Sasha
3. 1,397 views
The Specific Gravity of kerosene is 0.786/ What is the volume occupied by 7.75kg of kerosene?
1. 2 answers
2. asked by Natalie
3. 1,386 views
A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr.At what angular speed do the wheels turn? How long do they
1. 2 answers
2. asked by venuya
3. 1,372 views
Kelly subtracted 2.3 from 20 and got 17.7. Explain why this answer is resonable.
1. 6 answers
2. asked by Karen
3. 1,368 views
3) A graduated cylinder has 25.0mL of water in it before an aluminum cube with the mass of 10.0g is added to it. What is the new
1. 2 answers
2. asked by Kary
3. 1,350 views
A charge of 6.00mC is placed at each corner of a square 0.100 m on a side. Determine the magnitude and direction of the force on
1. 2 answers
2. asked by john
3. 1,335 views
A spring with a spring constant of 223.9 N/m is compressed by 0.220 m. Then a steel ball bearing of mass 0.0372 kg is put
1. 2 answers
2. asked by Gina
3. 1,328 views
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is
1. 1 answer
2. asked by Emily
3. 1,328 views
A chain composed of four identical links is suspended by a rope and does not move. What are the forces on each chain? (include
1. 2 answers
2. asked by Tyrone
3. 1,296 views
one day a store sold 21 sweatshirts. White ones cost $10.95 and yellow ones costs $13.50. In all $275.85 worth of sweatshirts
1. 2 answers
2. asked by Anonymous
3. 1,294 views
find the linear function f(x)=mx +b, whose graph has the given slope and y-interceptslope is -13/9 and y-intercept is (0.-6) the
1. 1 answer
2. asked by Anonymous
3. 1,281 views
An organism's ability to maintain homeostasis is important to it's survival. Explain why an organism that lives on land has more
1. 3 answers
2. asked by Jaci
3. 1,262 views
A ball is thrown horizontally from the roof of a building 60 m tall and lands 45 m from the base. What was the ball's initial
1. 1 answer
2. asked by Andy
3. 1,252 views
A particle has ⃗r(0) = (4 m)j and ⃗v(0) = (2 m/s)i.If its acceleration is constant and given by ⃗a = −(2 m/s2) (i +j),
1. 1 answer
2. asked by Christian
3. 1,237 views
Water (2690 ) is heated until it just begins to boil. If the water absorbs 5.29×105 of heat in the process, what was the
1. 2 answers
2. asked by Kyle
3. 1,212 views
If the back of the truck is 1.0 above the ground and the ramp is inclined at 26, how much time do the workers have to get to the
1. 2 answers
2. asked by DP
3. 1,201 views
a)How many grams of NH3 can be produced from 2.84mol of N2.b)How many grams of H2 are needed to produce 14.86g of NH3? balanced
1. 1 answer
2. asked by Amy
3. 1,184 views
Can you please correct this sentense:kelsey said i want to go to aunt joys for thanksgiving
1. 5 answers
2. asked by Gita
3. 1,174 views
"How many moles of oxygen are required to react completely with 5 mol C(8)H(18)?"2C(8)H(18) + 25O(2) => 16CO(2) + 18 H(2)O In
1. 3 answers
2. asked by Gray
3. 1,163 views
I DON'T KNOW WHAT IM DOING WRONG!!!!!!NASA has built centrifuges to enable astronauts to train in conditions in which the
1. 1 answer
2. asked by tom
3. 1,156 views
Solve this linear programming problem using the simplex method:Maximize P = 21x + 12y + 24z subject to these constraints: 3x +
1. 0 answers
2. asked by John
3. 1,155 views
A small steel ball bearing with a mass of 10 g is on a short compressed spring. When aimed vertically and suddenly released, the
1. 1 answer
2. asked by penny
3. 1,140 views
write the definition " a prime number is a whole number greater then 1 and has exactly two factors" as a biconditional.i really
1. 1 answer
2. asked by crystal
3. 1,139 views
An airplane is flying horizontally with a constant velocity of 170 m/s at an altitude of 4500 m when it drops a package.(a) How
1. 2 answers
2. asked by jayson
3. 1,137 views
what is the mass of 1.22x10^23 molcules of carbon dioxide(co2) and silicon dioxide(Sio2)?
1. 1 answer
2. asked by Katie
3. 1,136 views
A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?
1. 2 answers
2. asked by Johannie
3. 1,130 views
This is not a homework question, I'm just asking this casually. Is the metal Silver a good conductor of electricity?
1. 1 answer
2. asked by Anonymous
3. 1,123 views
One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h. If a
1. 1 answer
2. asked by jay
3. 1,119 views
How many grams of iron are there in a sample of Fe3O4 which weighs 8.338 g?
1. 2 answers
2. asked by Diggs
3. 1,119 views
Matching: Predation, Competition.Red tailed hawks and black racer snakes prey on the same species of rodents in the same
1. 2 answers
2. asked by Michael
3. 1,112 views
What is the theme presented in the poem: "You are reading this too fast," by Ken Norris?
1. 1 answer
2. asked by Robert
3. 1,095 views
What if there's a quote inside a quote would I use this " ...'...'"and also what if I wanted to add something in my own words in
1. 2 answers
2. asked by Amy~
3. 1,093 views
You throw a ball upward from a window at a speed of 2.9 m/s. How fast will it be moving when it hits the sidewalk 2.2 m below?
1. 2 answers
2. asked by Anonymous
3. 1,093 views
Triangles ABC and RST are similar triangles. Angle A=2(x+15)^0 angle S=3x^0,and angle C=x^0. What are the measures of angles
1. 1 answer
2. asked by Bionca
3. 1,092 views
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its
1. 0 answers
2. asked by Rachel
3. 1,091 views
Solve this problem using the simplex method.A company manufactures checker sets and chess sets. Suppose each day the company has
1. 0 answers
2. asked by John
3. 1,082 views
A chain composed of four identical links is suspended by a rope and does not move. What are the forces on each chain? (include
1. 2 answers
2. asked by Richard
3. 1,073 views
to which set of numbers does each number belong?-79
1. 2 answers
2. asked by Anonymous
3. 1,071 views
You throw a ball downward from a window at a speed of 1.9 m/s. How fast will it be moving when it hits the sidewalk 2.2 m below?
1. 3 answers
2. asked by Anonymous
3. 1,063 views
plane traveling 200 km/hr with supplies for people 110 meters below. how many second before do they have to drop the supplies
1. 2 answers
2. asked by tom
3. 1,054 views
f 89 of heat are added to a pure gold coin with a mass of 15 , what is its temperature change? Specific heat capacity of gold is
1. 2 answers
2. asked by Kyle
3. 1,053 views
HOW MUCH LARGER THAN 3/4 INCHES IS 25/32?
1. 1 answer
2. asked by Johnny Lee
3. 1,046 views
What advantages in warfare did the Hyksos use to defeat the Egyptians? From my readings this is my answer-- The advances in
1. 11 answers
2. asked by Reed
3. 1,043 views
Two baseballs are thrown off the top of a building that is 7.24 m high. Both are thrown with initial speed of 63.3 mph. Ball 1
1. 1 answer
2. asked by Gina
3. 1,040 views
A delivery truck travels 20 blocks south, 24 blocks west and 25 blocks north. What is its final displacement from the origin?
1. 2 answers
2. asked by jake
3. 1,039 views
HELP PLEASE!!! A satellite moves in a circular orbit around Earth at a speed of 5085 m/s.(a) Determine the satellite's altitude
1. 1 answer
2. asked by bill
3. 1,035 views
#1.) The population of bacteria after t hours is given by P(t) = 500/(1+83.33e^-0.162t)a.) What is the initial population? b.)
1. 3 answers
2. asked by Jamie
3. 1,032 views
An unknown substance has a mass of 17.3 . When the substance absorbs 1.557×102 of heat, the temperature of the substance is
1. 2 answers
2. asked by Kyle
3. 1,031 views
I like to write and name chemical formulas, but some formulas just confused me really bad, so I would like help getting back on
1. 1 answer
2. asked by Anonymous
3. 1,029 views
What average force is required to stop an 1300 -kg car in 9.0 s if the car is traveling at 90 km/h?
1. 2 answers
2. asked by cindy
3. 1,019 views
Hello. My teacher gave us a worksheet today she tried to explain it but I still don't understand it can someone help me please?1
1. 2 answers
2. asked by Treasan
3. 1,018 views
A suspension bridge is 66.0 m above the level base of a gorge. A stone is thrown or dropped from the bridge. At the location of
1. 2 answers
2. asked by Kacy
3. 1,007 views
indentifying predicate nominatives and predicate adjectives in this sentence..Do the strawberries on this vine look ripe to you?
1. 1 answer
2. asked by brittany
3. 995 views
Assume that there are 13 frozen dinners: 5 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them.What is the
1. 1 answer
2. asked by Jordan
3. 995 views
How do I solve a quadratic equation x^2 - x = 30 by completing the square-I don't understand-could someone just explain the
1. 5 answers
2. asked by Jamie
3. 995 views
The best leaper in the animal kingdom is the puma, which can jump to a height of 11.5 ft when leaving the ground at an angle of
1. 2 answers
2. asked by jay
3. 988 views

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