Ask a New Question

Questions and answers by

christine

Questions (177)

A refinery receives 4.23434x10^4 m3/h of crude oil. After the distillation process roughly 4.76216x10^1 % of the crude is
1. 0 answers
2. 511 views
consider a neutral atom with 69 protons and 80 neutrons what is the atomic number of this element
1. 1 answer
2. 490 views
a dose of asprin of 5.0mg per kilogram of body weight has been perscribed to reduce the fever of an infant weighing 8.0 pounds
1. 3 answers
2. 945 views
a nugget of gold with a mass of 437g is added to 50ml of water the water raised to a volume of 90.0 ml what is the density of
1. 1 answer
2. 552 views
when is it appropriate to use gravity filtration and when to use vaccume filtration
1. 1 answer
2. 665 views
when is it appropriate to use gravity filtration and when to use vaccume filtration
1. 1 answer
2. 439 views
where would the safest location on the bench to set up and use a labratory burner explain why
1. 1 answer
2. 358 views
when an object was weightedon a top loading balance the balance display read 13.730 the mass was recorded as 13.73g what is
1. 2 answers
2. 456 views
it is considered a saftey hazard to leave an operating burner unatteneded unless the flame is made luminous10 explain why
1. 1 answer
2. 324 views
what is the difference between a basic bunsen burner and the tirrll burner
1. 1 answer
2. 3,316 views
A total of 1200 students attend top view high school. The ratio of teachers to students is 1:30. How many teachers are there at
1. 3 answers
2. 1,362 views
A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes
1. 0 answers
2. 482 views
To stop an elevator in free fall, brakes are installed between the walls of the elevator car and the walls of the shaft in which
1. 2 answers
2. 627 views
For each of the following listed below, explain how it enhances the plants ability to survive and reproduce in a terrestrial
1. 1 answer
2. 464 views
How could hard water decrease the efficiency of your kettle?
1. 1 answer
2. 403 views
Explain why the type of metal used in creating fireworks determines the colour seen when the fireworks are set off. Discuss what
1. 1 answer
2. 553 views
Explain what will happen to the volume of a gas as the pressure on that gas is increased. Assume that the temperature and amount
1. 1 answer
2. 573 views
List three ways in which human activities have contributed to the production of gases that dissolve in water to form acid
1. 1 answer
2. 464 views
If the percentage yield of a reaction was 78.51% and the theoretical yield was 288.0 g, what was the actual yield?
1. 2 answers
2. 698 views
The percentage composition of chlorine, by mass, in the compound K2PtCl4 is
1. 1 answer
2. 2,094 views
What is the difference between inference and observation?
1. 1 answer
2. 614 views
Would distilled water conduct electricity? Why or why not?
1. 1 answer
2. 423 views
give 2 examples each of situations in which you might use the following pesticides Insecticides and fungicides
1. 2 answers
2. 421 views
explain the difference between gymnosperms and angiosperms give give 5 examples of each that are ontario native
1. 1 answer
2. 699 views
a) Describe the niche of the sea lamprey.b) Find out how sea lampreys may have entered the Great Lakes ecosystem. c) Identify
1. 2 answers
2. 588 views
3. Describe the role of microorganisms (bacteria or viruses) in:a. Genetic manipulation and medical research b. Ecosystem (such
1. 1 answer
2. 775 views
Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the
1. 1 answer
2. 7,008 views
Distributive, Associative, or neither?3(bz)=(3b)z
1. 0 answers
2. 366 views
need help with edhelperku puzzle
1. 1 answer
2. 453 views
A 70.0 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of
1. 0 answers
2. 1,118 views
please help emergency.find double integral of x times y time e to the <x plus y> . bounded from <0,1> x <0,1>
1. 1 answer
2. 344 views
AIDS/HIV funding and Research
1. 2 answers
2. 387 views
in a political party, what is the job of precinct captain?
1. 1 answer
2. 464 views
the trying of impeachments is done by who?
1. 2 answers
2. 433 views
who solves the disputes over issues in congress? the correspondence committe, the committee of conference, or the core
1. 1 answer
2. 383 views
unit rate of 250 miles in 4hrs
1. 2 answers
2. 380 views
Did the Constitution resolve the weaknesses in the Articles of Confederation?
1. 1 answer
2. 762 views
What was the debate between North and South over counting slave populations?
1. 1 answer
2. 442 views
How much heat is needed to melt 50.0g of ice at 0 degree celcius and then heat the water to 25 degree celcius?
1. 2 answers
2. 1,596 views
In the preparation of sulfuric acid, sulfur dioxide must be catalytically oxidized to sulfur trioxide. How much oxygen must be
1. 1 answer
2. 685 views
Ok this is probably a stupid question but a hospital pharmacist works at a hospital right?
1. 1 answer
2. 509 views
8(5-n)=2n
1. 1 answer
2. 308 views
8(5-n)=2n
1. 1 answer
2. 309 views
the office hires an employee who's deaf, but who can lip read. what will the employer have to do in terms of this employee's job
1. 2 answers
2. 477 views
im given the refractive index values of two - isobutyl bromide (1.3785) and isobutyl chloride (2.4368).the solution's refractive
1. 2 answers
2. 543 views
this deals with TLC chromatography:if 2 compounds have same Rf under identical conditions, does it show that they have identical
1. 1 answer
2. 1,592 views
the early bstone age people had to learn to adapt to their what?
1. 1 answer
2. 395 views
a 46.2 mL, .568 M calcium nitrate soln is mixed w/ 80.5 mL of 1.396 M calcium nitrate soln. whats the concentration of final
1. 0 answers
2. 626 views
what is the mass of F in grams in 24.6 grams of SnF2?Convert 24.6 g SnF2 to mols SnF2. Convert mols SnF2 to mols F atoms.
1. 0 answers
2. 1,111 views
how many grams of sulfur are needed to react w/ 246 grams of mercury to form HgS?Hg + S ==> HgS unless your instructor insists
1. 1 answer
2. 956 views
im trying to calculate the pH of a 1.0L soln containing 53.8 g of completely dissociated Mg(CN)2.is this the diss. equation?
1. 0 answers
2. 443 views
? MnO4– + ?H+ + ?C2O42– --> ?Mn2+ + ?H2O + ?CO2what's the balanced equation? correct coefficients? is it 1MnO4- + 2H+ +
1. 4 answers
2. 5,352 views
what's Kp if Cl2CO was found to be 7.46% decomposed at 395'C when initial pressure is 7.60atm.Cl2CO --> <-- CO + Cl2 Initial p =
1. 0 answers
2. 459 views
when CO2 (.15mol) and H2 (.302g) in a 500L vessel at 576'C are allowed to come to equilibrium the mixture contains .000183 mol/L
1. 0 answers
2. 647 views
when Br2 (5.7mol) and Cl2 (.0934mol/L)in a 61 L vessel at 604'C are allowed to come to equlibrium the mixture contains .0523
1. 0 answers
2. 487 views
A student performed the freezing point depression experiment according to directions but mistakenly recorded the mass of lauric
1. 0 answers
2. 666 views
A solution is made by mixing 20.0 mL of C6H5CH3, d=.867g/mL, with 140.0mL of C6H6, d=.874g/mL. assuming that the volumes add
1. 0 answers
2. 598 views
I wrote a story for my Spanish class; could someone please proof-read part of it for me? Thanks!Ella se cae, arrodillada sobre
1. 0 answers
2. 535 views
s- integrals 1/ [ (x^4) sq.rt(x^2+9)] i know x=3tanx sq.rt(x^2+9)= 3 secx dx= 3/[cos^2(x)] so far i know: = 1/ (3tan^4(x)) 3secx
1. 0 answers
2. 652 views
if a structural isomer has an OH attached, i don't understand why it's unlikely that it'll be a liquid at room temperature.I
1. 0 answers
2. 584 views
i'm having trouble evaluating the integral at pi/2 and 0.i know: s (at pi/2 and 0) sin^2 (2x)dx= s 1/2[1-cos(2x)]dx= s
1. 0 answers
2. 589 views
s- integralendpoints are 0 and pi/2 i need to find the integral of sin^2 (2x) dx. i know that the answer is pi/4, but im not
1. 0 answers
2. 622 views
An unknown was prepared with the concentration of 0.000120 M. A Beer's Law plot was prepared using the absorbance values from
1. 1 answer
2. 547 views
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolvedthe
1. 0 answers
2. 719 views
Which of the following is the best definition of Hess' Law?A. Heat is always released by the decomposition of 1 mole of a
1. 0 answers
2. 654 views
what is the rhetorical device for:What is the difference between "sugar free" and "no sugar added"? sugar free means no sugar at
1. 0 answers
2. 671 views
which exhibits hydrogen bonding (there can be more than 1)1. IF7 2. SiH4 3. CH3CH2OH 4. (CH3)2CHOH 5. PCl3 6. CH3CHCHCH3 * do
1. 0 answers
2. 706 views
what can the congress dohttp://www.google.com/search?q=articles+confederation+congress&rls=com.microsoft:en-us:IE-SearchBox&ie=U
1. 0 answers
2. 595 views
the number of sides in an argumentThere probably would be at least one side of an argument for each person participating. It
1. 0 answers
2. 397 views
Hi, I have a math question that I need help with:g:-> 3(1.3)^x State equations for any asymptotes to the graph of g. I know what
1. 0 answers
2. 1,022 views
give the demensions of rectangles with the perimeters of 70 feet and length-to-width ratios of 3 to 4, 4 to 5, and 1 to 1.Ok,
1. 0 answers
2. 807 views
What is the width of a rectangle with a perimeter of 70 feet if its length is 1 foot? 2 feet? L.feet?perimeter = 2(length +
1. 0 answers
2. 1,076 views
suppose the length of a rectangle increases,but the perimeter remains at 70 feet. How does the width change?Either the width
1. 3 answers
2. 1,041 views
Estimate a population:To study a species of fox, a team captures and tags 25 foxes from a large forest and then releases them.
1. 0 answers
2. 615 views
In 1995, more than 1.1 million students in the U.S. took the SAT. On the mathematics section, the mean =507, s=112 (standard
1. 0 answers
2. 464 views
the circle graph at the right shows eye colors of the students in Mr.Chare's 4th hour class. If 7 students have either green or
1. 1 answer
2. 615 views
I'm going into AP (advanced placement) European History, grade 10, and our summer reading assignment was to read a <i>A World
1. 0 answers
2. 1,330 views

Pages

1
2

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2024