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Questions (304)

calculate the amount of heat energy required to melt a 1kg iron ingot initially at 20 ¡ãC? (heat of fusion for Fe is 33.0 J/g
1. 1 answer
2. 2,172 views
a plane leaves Vancouver headed for Toronto of a speed of 700 km/hr. Half an hour later a planes leaves toronto headed to
1. 1 answer
2. 875 views
how much is 8 liters jug water he fills 9750 millimeters pitchers with water how much water is left?
1. 1 answer
2. 517 views
3 times the complement of an angle is 30 more than the supplement of the original angle. What is the measure of the angle?
1. 1 answer
2. 535 views
Who can give me a good explanation with examples for the following conjunction.a) while b) unless
1. 2 answers
2. 470 views
if 10 of the 50 pieces if candy are green, then what percent of the pieces of candy are green?
1. 1 answer
2. 558 views
Rachel , smith , john and Thomas brought in 300 pennies for the penny harvest . Smith brought in 2/6 of the pennies . Rachel
1. 1 answer
2. 442 views
Andrew wants supplement his pension with investment interest if he invests 28,000 at 6% interest how much would he have to
1. 0 answers
2. 443 views
the first term of a geometic sequence is 3 and the sum of second and third terms is 60 determine the first three terms and the
1. 0 answers
2. 564 views
show that x(-4,-3) and y(4,3) are endpoints of a diameter of the circle x^2 + y^2 = 25
1. 1 answer
2. 470 views
Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas
1. 1 answer
2. 569 views
how did poverty affect the aboriginal in canada in last 500 hundred years ?
1. 0 answers
2. 378 views
did the federalist support a strong or weak federal government????
1. 1 answer
2. 354 views
Write a balanced equation for the dissociation of Mg(NO3)2. I wrote Mg(NO3)^2(s)==>Mg^2+(aq)+NO3^3-(aq)That isn't the answer in
1. 1 answer
2. 3,469 views
Write the balanced equation for the hydration of CuSO4. Indicate the physical states using the abbreviations (s), (l), or (g)
1. 1 answer
2. 3,102 views
A 0.286g sample of carbon dioxide, CO2, has a volume of 585mL and a pressure of 495mmHg . What is the temperature, in kelvins
1. 3 answers
2. 608 views
What is the volume in liters of 3.0moles methane gas, CH4, at 12∘C and 1.48atm ?
1. 1 answer
2. 509 views
contact Lenses improve lives. Contact lenses are an example of an __________.my answer is indepentant variable. Someone help.
1. 1 answer
2. 1,714 views
Solve 3p-6q = 04p+1q = 3 Using any method Thank you!!!!
1. 1 answer
2. 325 views
What is the Lewis structure formula, electron pair geometry and the molecular geometry for SO4^2-
1. 1 answer
2. 670 views
when a teacher hears a preschool student using incorrect language she should
1. 2 answers
2. 546 views
at 52 degrees F, how fast does bacteriagrow? At 37 degrees F, how fast does bacteria grow?
1. 0 answers
2. 341 views
if you have two thirds of lace and another pattern calls for five ninths of lace,how much more did the first pattern call for?
1. 1 answer
2. 439 views
questions based on the book to kill a mockingbird:describe mr radley(not nathan radley. what does jem do to thank their
1. 4 answers
2. 514 views
these are questions based on the book to kill a mockingbird1. how does atticus explain to scout a way of getting along in school
1. 2 answers
2. 1,380 views
chemical equilibria involved in precipitation reaction
1. 1 answer
2. 419 views
this is for to kill a mockingbirdwhy does scout call the boy 'a pocket Merlin"? AND briefly describe mr.radley?
1. 1 answer
2. 1,060 views
this is for the book to kill a mockingbirdwhat is significant about Mr. Cunningham kneeling down and saying to Scout "i'll tell
1. 3 answers
2. 1,128 views
My question is about the story a midsummer nights dream, in act one1. Why does helena wish her 'tongue should catch(hermia's)
1. 2 answers
2. 1,135 views
empirical formulas"p 889(153e)
1. 3 answers
2. 333 views
what mass of Fe3O4 would conatin 1.85*10^21 atoms of Fe?
1. 1 answer
2. 381 views
if a sample of iron(III) oxide contains 22.56g of iron, what is the mass of the sample?do u just find the molar masses?
1. 1 answer
2. 546 views
A sample of liquid consisting of only C,H and O and having a mass of 0.5438g was burned in pure oxygen and 1.039g of CO2 and
1. 1 answer
2. 635 views
the mass of 2.50 mol of a compound with the formula ECl4, in which E is a nonmetallic element, is 385g. what is the molar mass
1. 3 answers
2. 1,932 views
the mass of 2.50 mol of a compound with the formula ECl4, in which E is a nonmetallic element, is 385g. what is the molar mass
1. 1 answer
2. 568 views
a sample of glucose, c6h12o6 contains 2.03*10^21 atoms of carbon.(a)how many atoms of hydrogen does it contain? (b)how many
1. 6 answers
2. 13,327 views
how many grams of CO2 can be formed by the complete combustion of a 14.7 sample of C2H6 that is 92.4% pure?( assume the
1. 2 answers
2. 686 views
An aircraft in a straight line with a constant speed of 450km.h ,What is the magnitude of the resultant force acting on the
1. 1 answer
2. 592 views
how many c atoms are contained in 15.63g of c5h12??
1. 2 answers
2. 571 views
A sample of liquid consisting of only C,H and O and having a mass of 0.5438g was burned in pure oxygen and 1.039g of CO2 and
1. 2 answers
2. 3,511 views
"empirical formulas"p 889(153e)
1. 2 answers
2. 358 views
"empirical formulas"combustion of a 0.255g compound conatining only C,H and O, yields 0.561g CO2 and 0.306g H2O. what is the
1. 3 answers
2. 646 views
A 2.50g sample of a hydrate of calcium nitrate was heated, and only 1.70g of the anhydrous salt remained. what is the formula of
1. 2 answers
2. 3,512 views
a 5.00g sample of a hydrate of barium chloride was heated, and only 4.30g of the anhydrous salt remained. what is the formula of
1. 2 answers
2. 1,762 views
if 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous salt will remain?i would really
1. 2 answers
2. 3,594 views
what is the formula for the sodium sulfate if 3.54g of dry solid remain after 8.50g of hydrate are heated??
1. 2 answers
2. 1,091 views
If 53.62 ml of an oil weighs 48.34 g, what is the specific gravity of the oil?
1. 3 answers
2. 3,210 views
a net force of 5000N accelerates a car from rest to 20m/s in 10s. what is the net force exerted on the car
1. 1 answer
2. 430 views
questions for short story Stones by sandra birdsell.1) in two sentences retell the story. 2a) Compare the descriptions of the
1. 25 answers
2. 3,168 views
what is the function of the following table: a tree that has a height of 12 feet will have a shadow of 10 feet
1. 0 answers
2. 227 views
if a 240mg of an acid H2A required 50.0ml of 0.10M NaOH for complete neutralization, what is yhe equivalent weight of the acid?
1. 1 answer
2. 502 views
draw the approximate curve for a 25ml 0.10 M weak acid HA (K=1x10^-6) that is titrated with 0.10 M NaOH
1. 1 answer
2. 498 views
i want to know more about the who what where why and how of robert falcon scott and the terra nova expedition
1. 1 answer
2. 416 views
how many extremities are in the human body?... is it only two with is our upper extremity and lower body?... help!..thanks!
1. 1 answer
2. 449 views
A football team gained 12 yards on one play, lost 40yards on another, and gained 34 yards on the last play of the first half.
1. 1 answer
2. 1,205 views
an iron box immersed in water,kerosene and coconut oil separately.does same force of buoyant force on iron box in all liquids?
1. 0 answers
2. 466 views
A scuba diver's tank contains 0.29kg of O2 compressed into a volume of 2.3L. Calculate the gas pressure at 8 degrees celcius.
1. 1 answer
2. 1,047 views
compare the status of Europe and the United States after World War I. How were they different financially, politically, and
1. 1 answer
2. 373 views
8. Suppose that the IQ score for a person selected from a certain group of peopleis approximately N(�; 100). Let X1;X2; : : :
1. 0 answers
2. 513 views
Simplify sin 2 theta over 2 cos theta to a single primary trig function
1. 1 answer
2. 407 views
what is 837 divided by f
1. 2 answers
2. 921 views
A carpenter is building a house. He is constructing the roof. The roof has an angle of elevation of 40° from the horizontal.
1. 1 answer
2. 892 views
5.22kg of H2 reacts with 31.5kg of N2, which one is the limiting reactant?
1. 1 answer
2. 705 views
how do you find rhetorical devices?
1. 1 answer
2. 328 views
astronaut weighs 175Ib. what is his weight in newton?
1. 1 answer
2. 846 views
A sack of flour has weight of 19.8N. what is its weight in pounds?
1. 1 answer
2. 976 views
Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus
1. 2 answers
2. 630 views
the coordinates of point S are given. the midpoing of RS is (6,-10). find the coordinates of point r. s(0,8)
1. 1 answer
2. 838 views
how far from the wall should he place the ladder? If his ladder is 13 feet long and has to reach a 12 feet window.
1. 1 answer
2. 455 views
Two packing crate of masses 10.0kg and 5.00kg are connected by a light string that passes over a frictionless pulley .the 5.00kg
1. 1 answer
2. 6,732 views
I need help with this question... why air released from a tire or spray bottle can cool its surroundings?..thanks
1. 1 answer
2. 386 views
compare and contrast positive psychology with behaviorism. How do they differ? What would be the viewpoint of a behaviorist on
1. 0 answers
2. 437 views
compare and contrast positive psychology with behaviorism. How do they differ? What would be the viewpoint of a behaviorist on
1. 0 answers
2. 466 views
compare and contrast positive psychology with behaviorism. How do they differ? What would be the viewpoint of a behaviorist on
1. 1 answer
2. 568 views
If each inch is equal to 3 feet, what is the area of a rectangular rug with a length of 3 inches and a width of 2 inches?
1. 1 answer
2. 410 views
the perimeter of a rectangular swimming pool is 40 ft. the length of the pool is 12 ft. what is the area of the pool
1. 3 answers
2. 1,325 views
Albright Company purchased as a long-term investment $500,000 of Benton Corporation 10-year 9% bond present entries to record
1. 0 answers
2. 654 views
i need to make up a snack not an existing snack which should include 2 categories or more from the food group can you tell me a
1. 1 answer
2. 1,003 views
true or false- if you only want a small volume of hot water, you should place the immersion heater near the bottom of the hot
1. 1 answer
2. 1,024 views
true of false- if you only want a small volume of hot water, you should place the immersion heater near the bottom?
1. 1 answer
2. 429 views
I'm having trouble balancing these two oxidation-reduction reactions that occur in a basic solution. Can anyone help? Please?
1. 1 answer
2. 712 views
A quaterback throws the football to a stationary receiver who is 31.5m down the field. If the football is thrown at an initial
1. 0 answers
2. 1,293 views
solve the formula for the given variable.Assume all variables as non-negative. A = 5s^2 for s
1. 1 answer
2. 526 views
x/4+2=1show step
1. 1 answer
2. 278 views
Karina has 20 foot piece of ribbon. How many cus does she need to make cut 10 pieces of ribbon from it?
1. 1 answer
2. 1,037 views
A cut in the capital gains tax will benefit wealthy people. Marietta saysher family would be much better off if capital gains
1. 5 answers
2. 520 views
set operationsA^c = (A complement) B^c = (B complement) A^c intersection B^c intersection C no parenthesis :// do i get the
1. 1 answer
2. 557 views
given the following information, provide an example of how much of farmers sausage gravy mix should be ordered. You are doing
1. 0 answers
2. 757 views
hans back yard is shaped like a square all right angles.Classify the shape in as many ways as posible.
1. 1 answer
2. 443 views
i am a 7th grd and i have to do a three page eassy on been respectful it due by 3/23/11
1. 1 answer
2. 343 views
discuss how you might use the new product development process if you were thinking about offering some kind of seummer service
1. 0 answers
2. 526 views
consumer services then to be intangible.and goods tend to be tangible, use an example to explain how the lack of a physical good
1. 2 answers
2. 1,127 views
what is a metaphor using a time you were tired?
1. 1 answer
2. 405 views
what is a simile using a neighborhood cat?
1. 1 answer
2. 388 views
what is 0.68 into a fraction
1. 3 answers
2. 461 views
twenty-seven out of thirty students have a mobile work out the percentage of students who do not have a mobile phone! show each
1. 2 answers
2. 544 views
four teenagers collected a total of £64 for charity. each teenager collected a whole number of pounds. the modal amount
1. 3 answers
2. 679 views
a store recorded net sales of 423,400 for the year.the store's beginning inventory at retail was105,850 and it's ending
1. 1 answer
2. 580 views
calculate the monthly payment by loanamotization table: loan 26,000, down payment of 5,000 at 11% for 36 months
1. 1 answer
2. 435 views
solve this in 3 variables..i don't know where to start,,:(( y/4+z/3-x/2=4 y/2-x/6+z/15=2 y/8+z/5-x/3=2
1. 1 answer
2. 1,070 views

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