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annie
Questions and answers by
annie
Questions (217)
An insulated beaker contains 300g of water initially at 30 degree celsius. water at 100 degree celsius is added until the
4 answers
2,772 views
How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL)
Is it 2.28mL of conc HCl dilute to 100mL with
6 answers
asked by
annie
16,452 views
give two recommendations or tips IN SPANISH to someone who is taking a flight for the first time. Use the subjunctive in your
3 answers
163 views
Which sentences are correct?
1) Are you able to assist me on this matter? I would appreciate your assistance on this matter. OR
5 answers
10,288 views
A motorboat covers the distance from one pier to the other pier in 4 hours and the way back in 5 hours. What is the speed of the
65 answers
asked by
annie
10,057 views
A cylinder has volume 12cm^3. What will be the volume of a cone with the same base area and perpendicular height?
4 answers
1,588 views
Which identify similarities between Pilgrims and Puritans?
Select all that apply. Both groups challenged Calvinists over the
7 answers
2,417 views
1. What is the equation of the tangent line to y = 2*x(x - 4)^6 at point (5, 10)?
2. If f(x)=8/(x^2+4) , find the slope of the
1 answer
581 views
Hi, it would be greatly appreciated if someone could proofread parts of my bio lab.
Introduction VO2 max or maximum oxygen
1 answer
549 views
A wrecking ball (weight 4140 N) is supported by a boom, which may be assumed to be uniform and has a weight of 2550 N. As the
2 answers
1,083 views
Is this the correct use of a semicolon?
From the harbors of Africa to the forests of Vietnam, mankind has glorified the most
4 answers
380 views
Why is;
a) antimony pentafluroide Sb(-3) + F5(-1) --> SbF4 ? b) aluminium bromide hexahydrate Al(-1) + Br(-1) --> AlBr3 . 6H2O ?
2 answers
884 views
what do you call munbers suth as 2,4,6,8, or 10 my homework is due today in 3 hours !
1 answer
421 views
what do you call numbers suth as 2,4,6,8 or,10 in an array
1 answer
392 views
what is a boldface digit and how do you find its value
7 answers
3,782 views
4-3x = x + 1
1 answer
275 views
what does small electronegativity difference reveal about the strength of a covalent bond?
3 answers
1,142 views
When I bend down, what kind of force is involved? Is it the pulling force of the muscle?
1 answer
421 views
1) "I am filled with sadness."
Can you explain the grammar rules for using "filled" instead of fill? 2)"We visited the Detainees
2 answers
482 views
would this be a correct proof of the cauchy-schwartz inequality:
abs=absolute value abs(u*v) is less than or equal to
2 answers
706 views
A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and
7 answers
asked by
annie
5,880 views
The force required to compress an imperfect horizontal spring an amount x is given by F= 150x+12x^3, where x is in meters and F
4 answers
4,882 views
The small mass m sliding without friction along the looped track is to remain on the track at all times, even at the very top of
4 answers
2,091 views
how would you solve: sin(2x)+cos(2x)=tan(x)?
4 answers
336 views
which of the folling values represents an index of refraction of an actual material
2 answers
890 views
if you had m^0g^0 would you leave it in that form or would the simplified version be 1?
1 answer
303 views
what is a word for what happens when you are confused?
2 answers
129 views
A 1.00 L volume of helium gas is cooled from 50.0 degrees celcius to 25.0 degrees celcius. If the pressure remains constant,
2 answers
575 views
calculate the number of moles of carbon dioxide in a volume of 50.0 mL of carbon dioxide, assuming a pressure of 1.00 atm and a
1 answer
486 views
Thank you for your help! The question is what is the center and radius of the circle. (x+2)^2+y^2=64. Thank you so much.
4 answers
318 views
Ok. I have one more question. The mean height of 5 students is 59.4. If one of the students leaves, the mean height becomes 61.
4 answers
435 views
Ok. I pretty much have this one solved but the final answer has me stumped. The probability that Luis will pass his statistics
6 answers
610 views
what presidents make up mt rushmore
1 answer
316 views
Light sensitive materials are samples under yellow lighting. Please explain what yellow lighting means.
1 answer
413 views
Sorry,please ignore my earlier post.
Light sensitive materials are sampled in a room with yellow lighting. How is it different
1 answer
366 views
How do I prepare 30% v/v ethanol from 95% ethanol?
Thanks.
4 answers
600 views
How do I prepare 40% v/v from 95% ethanol? When we say 95% ethanol, do we usually mean 95% w/w ethanol unless otherwise stated?
P
1 answer
502 views
I have a bottle of 95% ethanol purchased from the manufacturer.
Normally, when it is not stated, does it mean 95% w/w ethanol? I
2 answers
1,512 views
Thanks a lot:)
So just to confirm: normally for any chemical bought from manufacturer, if it is not stated, the % usually means
2 answers
873 views
I refer to my earlier post on v/v versus w/w. I would be very grateful for any advice provided.
For 95% ethanol purchased from
2 answers
610 views
The angular position of a point on the rim of a 45.8 cm rotating wheel is given by θ(t) = 3.6 t2 − 2.8 t +7.5,
What is the
1 answer
397 views
How would you usually prepare starch indicator solution for iodine titrations? Can the solution be stored for a few months in
3 answers
1,635 views
I found the following procedure to prepare starch indicator solution on a website:-
To prepare starch indicator solution, add 1
3 answers
4,004 views
1) Do we say "The information is correct as of 28 September 2010." or "The information is correct as at 28 September 2010."?
2)
4 answers
414 views
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise
1 answer
372 views
In reflux, water normally enters from the bottom of the condenser and exits from the top. What causes water to be able to rise
1 answer
377 views
Can you provide some examples on the use of shall versus should?
1 answer
296 views
Are the following sentences semantically / gramatically correct?
1)Alert the supervisor to any defective material found. 2)Some
5 answers
1,124 views
Posted by annie on Wednesday, October 13, 2010 at 4:29pm.
Are the following sentences semantically / gramatically correct?
2 answers
552 views
A 22.7 kg mass attached to a spring scale rests
on a smooth, horizontal surface. The spring scale, attached to the front end of a
2 answers
617 views
I need help finding an equation for:
an asteroid revolves around the sun with a mean orbital radius twice that of Earth's.
1 answer
519 views
1)Let the instrument switch on for 1 hour before analysis.
2)On the instrument for 1 hour before analysis. 3)Switch on the
3 answers
450 views
An Amusement park purchased equipment from a manufacturer for a list price of $42,000.00 minus trade discounts of 30/20/15.
3 answers
446 views
We have purchased a batch of material directly from the manufacturer.
1) No discount was provided by the material manufacturer.
2 answers
875 views
I also thought that both are acceptable.
However, I am confused because we usually write "The shoe manufacturer" and "The clothes
6 answers
574 views
if an acid has a pH of 1.1 what is the hydrogen ion concentration of the solution expressed in scientific notation to 3
3 answers
522 views
complete using a simile
1.a drunken person often walks like 2.as slow as 3.my friend can run like
3 answers
570 views
. Suppose you are a stock market analyst specializing in the stocks of theme parks, and
you are examining Disneyland’s stock.
3 answers
1,095 views
a recipe call for 1.5 cups of mix to make 8 pancakes. John wants to make 12 pancakes and uses 2 cup of mix. Does John have the
3 answers
1,477 views
An article in BusinessWeek warned of the dangers of deflation as the collapse of numerous Asian economies was creating worries
2 answers
527 views
An airline transportation consultant offers the CEO of BlueStar, a struggling new commercial airline company, the following
2 answers
538 views
The drawing shows an extreme skier at bottom of a ski jump. At this point the track is circular with a radius r. Two forces act
7 answers
5,837 views
1) This puts the integrity of the material into question.
or 2) This puts the integrity of the material in question. Which is
1 answer
402 views
The 3 results should be within ± 0.5.
I have 3 results 1) 1.5 2) 0.5 3) 1.0 Does this mean the results are acceptable since the
1 answer
338 views
Can you start a sentence with As?
10 answers
366 views
You are a painter, and the price of a gallon of paint increases from $3.00 a gallon from 3.50 a gallon. your usage of paint
2 answers
532 views
what sistuations lend themselves to evaluation
1 answer
267 views
how interest rates affect our purchasing decisions
1 answer
300 views
1) The expiry date of the product will be 1 year from the date stated on the label, unless otherwise advised by the supplier.
OR
3 answers
360 views
6d-3d+2d=35
3 answers
685 views
8 mL of 0.0100 M HCl are added to 22 mL of 0.0100 M acetic acid. What is the pH of the resulting solution?
2 answers
570 views
1. A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed of 1.50
4 answers
1,967 views
a 160g hockey puck slides horizontally along the ice, and the coefficient of kinetic friction between puck and ice is 0.15. if
4 answers
2,445 views
There are several different hard drives available for a computer.Which of the following size hard drives is the largest?
3 answers
434 views
What is the ideal computer arrangement to use when you want to integrate computers directly into the classroom curriculum?
2 answers
540 views
Which of the following scenarios most likely describes the future of technology in education?
4 answers
986 views
Why would you mount an overhead transparency in a cardboard frame?
A. to make copies of it B. To color it C. To add overlays D.
2 answers
890 views
which machine would you use to project a color picture from a book?
A.Bioscope B.Slide projector C.overhead projector D.Opaque
2 answers
660 views
A software package that you would like to run on your classroom computer lists a 486 computer as a minimum requirement. On which
1 answer
422 views
10tan theta= .5+1/2costheta + 2sintheta
How do I simplify the right side of the equation.
3 answers
329 views
When tutoring learning challenged settings,learning challenged students are most often placed in
A.resource rooms B.the nurse's
1 answer
464 views
Whi are pre-primer programs desinged for?
1 answer
311 views
8.In general,the best type of multicultural classroom materials are those that
3 answers
432 views
pour a liter of water at 40 c into a liter of water at 20 and the final temperature of the two becomes
3 answers
2,115 views
11.As a teacher aide in an ESL classroom,it's within your responsibility to
3 answers
716 views
11.As a teacher in an ESL classroom,it's within your responsibilities to A.meet parents one-on-one to discuss their child's
7 answers
790 views
6. to say that all African American males are fast runners is an example of A.prejudice B.sexism C.sterotype D.bias
2 answers
556 views
Aluminum metal generates H2 gas when dropped into 6.00 M HCl. Calculate the mass of H2 that will form from the complete reaction
1 answer
459 views
18.Which of the following statements implies rules of confidentality?A.You can tell the librarian that you heard that Joey's
1 answer
452 views
Cities and urban areas were a source of economic opportunities in the post-Medieval Western world.
How was the full potential of
7 answers
432 views
How to prepare 100mL of 3% w/w Hydrogen Peroxide from 30% w/w Hydrogen Peroxide?Specific Gravity of 30%w/w Hydrogen Peroxide is
5 answers
1,600 views
Help needed! I'm comparing France and the USA.
If France had the Paris vs. Versaille conflict with regards to the city capital.
2 answers
1,150 views
Larry is a very aggressive four-year-old child.he watches many television programs that contain violence.it's most likely that
4 answers
511 views
r=40-2t shows the relationship between the average rate of speed, r, of a car in meters per second, and the time, t,in seconds,
1 answer
384 views
please proof read my short story please and make some correction
Love-Hate story “Happy birthday Khushi”, her family said as
2 answers
885 views
The sum of two forces, one having a magni-
tude of 2 N acting due west and other having a magnitude of 8 N acting due north is?
2 answers
693 views
A 6.5 g bullet leaves the muzzle of a rifle with
a speed of 347 m/s. What total constant force is exerted on the bullet while it
4 answers
823 views
a volume of 20. l of O2 os warmed from -30c to 85c what is the new volume if the pressure is kept constant
3 answers
846 views
what is the volume at STP of a sample of CO2 that has a volume of 75.0 ML at 30c and 680 mm Hg
4 answers
1,733 views
what are some some similarities and differences between dawn and night by elie wiesel?
1 answer
429 views
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