Questions LLC
Login
or
Sign Up
Ask a New Question
christine
Questions and answers by visitors named
christine
Questions (177)
can you please help me solve this problem if dy/dx=ycosx and y=3 when x=0, then y=
4 answers
5,092 views
When an electric discharge is passed through boron trichloride a new compound is formed. what is its simplest formula if on
4 answers
1,061 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 answer
1,233 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
2 answers
554 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 answer
414 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.
2 answers
545 views
suppose the length of a rectangle increases,but the perimeter remains at 70 feet. How does the width change?
Either the width
4 answers
984 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 answer
1,004 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 answer
740 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 answer
967 views
the number of sides in an argument
There probably would be at least one side of an argument for each person participating. It
1 answer
359 views
what can the congress do
http://www.google.com/search?q=articles+confederation+congress&rls=com.microsoft:en-us:IE-SearchBox&ie=U
1 answer
547 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 answer
646 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 answer
618 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 answer
593 views
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved
the
1 answer
655 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 answer
494 views
s- integral
endpoints 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 answer
545 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 answer
533 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 answer
543 views
s- integral
s 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
2 answers
603 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 answer
495 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 answer
548 views
A student performed the freezing point depression experiment according to directions but mistakenly recorded the mass of lauric
2 answers
614 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 answer
425 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 answer
594 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 answer
422 views
? MnO4– + ?H+ + ?C2O42– --> ?Mn2+ + ?H2O + ?CO2
what's the balanced equation? correct coefficients? is it 1MnO4- + 2H+ +
5 answers
5,260 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 answer
391 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
2 answers
909 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.
2 answers
1,055 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
2 answers
548 views
the early bstone age people had to learn to adapt to their what?
1 answer
357 views
this deals with TLC chromatography:
if 2 compounds have same Rf under identical conditions, does it show that they have identical
3 answers
1,534 views
im given the refractive index values of two - isobutyl bromide (1.3785) and isobutyl chloride (2.4368).
the solution's refractive
3 answers
480 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
3 answers
425 views
8(5-n)=2n
1 answer
266 views
8(5-n)=2n
1 answer
274 views
Ok this is probably a stupid question but a hospital pharmacist works at a hospital right?
1 answer
474 views
In the preparation of sulfuric acid, sulfur dioxide must be catalytically oxidized to sulfur trioxide. How much oxygen must be
2 answers
620 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?
4 answers
1,528 views
What was the debate between North and South over counting slave populations?
1 answer
411 views
Did the Constitution resolve the weaknesses in the Articles of Confederation?
3 answers
709 views
unit rate of 250 miles in 4hrs
3 answers
334 views
who solves the disputes over issues in congress? the correspondence committe, the committee of conference, or the core
1 answer
349 views
the trying of impeachments is done by who?
3 answers
391 views
in a political party, what is the job of precinct captain?
1 answer
429 views
AIDS/HIV funding and Research
3 answers
342 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 answer
305 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
2 answers
1,063 views
need help with edhelperku puzzle
1 answer
412 views
Distributive, Associative, or neither?
3(bz)=(3b)z
1 answer
345 views
Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the
4 answers
6,926 views
3. Describe the role of microorganisms (bacteria or viruses) in:
a. Genetic manipulation and medical research b. Ecosystem (such
2 answers
735 views
a) Describe the niche of the sea lamprey.
b) Find out how sea lampreys may have entered the Great Lakes ecosystem. c) Identify
3 answers
537 views
explain the difference between gymnosperms and angiosperms give give 5 examples of each that are ontario native
2 answers
658 views
give 2 examples each of situations in which you might use the following pesticides Insecticides and fungicides
3 answers
378 views
Would distilled water conduct electricity? Why or why not?
1 answer
379 views
What is the difference between inference and observation?
2 answers
566 views
The percentage composition of chlorine, by mass, in the compound K2PtCl4 is
3 answers
2,017 views
If the percentage yield of a reaction was 78.51% and the theoretical yield was 288.0 g, what was the actual yield?
3 answers
657 views
List three ways in which human activities have contributed to the production of gases that dissolve in water to form acid
1 answer
417 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
2 answers
519 views
Explain why the type of metal used in creating fireworks determines the colour seen when the fireworks are set off. Discuss what
2 answers
500 views
How could hard water decrease the efficiency of your kettle?
1 answer
365 views
For each of the following listed below, explain how it enhances the plants ability to survive and reproduce in a terrestrial
1 answer
431 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
3 answers
565 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 answer
447 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
4 answers
1,289 views
what is the difference between a basic bunsen burner and the tirrll burner
3 answers
3,257 views
it is considered a saftey hazard to leave an operating burner unatteneded unless the flame is made luminous10 explain why
1 answer
283 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
3 answers
405 views
where would the safest location on the bench to set up and use a labratory burner explain why
1 answer
313 views
when is it appropriate to use gravity filtration and when to use vaccume filtration
1 answer
397 views
when is it appropriate to use gravity filtration and when to use vaccume filtration
2 answers
587 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
2 answers
499 views
consider a neutral atom with 69 protons and 80 neutrons what is the atomic number of this element
1 answer
450 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
4 answers
888 views
A refinery receives 4.23434x10^4 m3/h of crude oil. After the distillation process roughly 4.76216x10^1 % of the crude is
3 answers
460 views
A mining operation excavates 5.482x10^4 metric tonnes of ore each hour. In an 12 hour production shift, how much ore is
2 answers
556 views
A descending elevator of mass 670 kg is uniformly decelerated to rest over a distance of6 m by a cable in which the tension is
6 answers
2,453 views
A block of mass 39 kg lies on an inclined plane, as shown. The horizontal and vertical supports for the plane have lengths of 36
2 answers
725 views
A person walks 2.8597x10^1 m East, then turns around and walks 8.7898x10^1 m West. The total time to walk this distance was
1 answer
393 views
A person walks 2.8597x10^1 m East, then turns around and walks 8.7898x10^1 m West. The total time to walk this distance was
1 answer
402 views
A plane travels with a uniform velocity of 3.399x10^1 m/s for a period of 2.267x10^0 seconds. What distance is travelled during
1 answer
319 views
space shuttle travels at about 7.4581x10^3 m/s. An astronaut takes about 1.5933x10^2 ms to blink an eye. How far does the space
2 answers
501 views
What volume (in Liters) of hydrogen must react to form 17.0L of ammonia according to the following balanced equation:
N2(g) +
1 answer
460 views
What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation:
2CO(g)
2 answers
507 views
a kid goes down a slide, accelerating at 1 m/s^2 for 3 seconds. if he starts at rest, how long is the slide ?
this is the
1 answer
325 views
An object with a mass of 2.728x10^1 kg is subjected to a force of 1.31851x10^3 N directed at an angle of 1.056x10^1 degrees from
1 answer
433 views
Metal Specific Heat (J/g-C)
Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l) 4.184 C2H5OH(l) 2.46 A piece of
1 answer
661 views
I really really need help w/this problem I think i figured it out but i have to be sure i did it right in order to do others
2 answers
501 views
really really need help w/this problem I think i figured it out but i have to be sure i did it right in order to do others
2 answers
510 views
How do you work this one problem?
Metal Specific Heat (J/g-C) Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l)
1 answer
407 views
Metal Specific Heat (J/g-C)
Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l) 4.184 C2H5OH(l) 2.46 Using the
2 answers
756 views
What would happen if 50 grams of carbon fully reacted to oxygen?
1 answer
379 views
a 6.54 g sample consisting of a mixture of silver nitrate and sodium nitrate is dissolved in water. this mixture then reacts
5 answers
2,451 views
how long will it take to decompose 38% of A at 25 degrees celsius?
1 answer
417 views
I have a perimeter of 15. I am not a square . Each of my sides is 3 units long. What shape am i?
1 answer
362 views
is the answer to find an equation of the curve that passes through the point (1,1) and whose slope at (x,y) is y^2/x^3 is
1 answer
324 views
Pages
1
2
