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October 17, 2010
A coordinate grid is used on the plan of a new housing development. fibre optic cable is being laid with a mico-tunnelling
4 answers
asked by
Ted
2,337 views
staright line y=x-1 meets curve
y=x^2-5x-8 at the points A and B. the curve y=p+qx-2x^2 also passes through ponts A and B. what
4 answers
asked by
tommas
1,704 views
Here were two tricky questions. Please provide steps. Answers are not necessary (since these are practice questions for an
3 answers
asked by
jo
781 views
Write the electron configuration for Se using the noble gas core format.
3 answers
asked by
KELLY
494 views
The greater of two consecutive integers is 15 more than twice the smaller. Find the integers.
3 answers
asked by
Krysta
732 views
A uniform solid sphere of mass M and radius R is rolling without sliding along a level plane with a speed v = 2.70 m/s when it
3 answers
asked by
Donny
1,170 views
The lengths of the sides of a triangle are consecutive even integers. Find the length of the longest side if it is 22 units
2 answers
asked by
Anonymous
1,172 views
Mercy Hospital decides to install a netwrok to serviceits various wards and operating rooms and emergency room that will give
1 answer
asked by
dwayne
440 views
Which of the following gases will occupy the smallest volume at 300 K and 760 torr and why?
80 g diatomic oxygen 80 g methane 80
6 answers
asked by
susan
791 views
Chemistry equilibrium?
Consider the reaction 2NO(g) + O2(g) = 2NO2(g) at 430C an equilibrium mixture consists of 0.020 mole of
3 answers
asked by
Ashley
1,412 views
A sample of nitrogen gas (N2) kept in a container of volume 13.3 L and at a temperature of 22.3°C exerts a pressure of 1.1 atm.
2 answers
asked by
nicole
783 views
Mei's salary starts at $16,000 per year with annual raises of $1500. Janet's starting salary is $19,300 with annual raises of
4 answers
asked by
Anonymous
1,642 views
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)?
1 answer
asked by
april
354 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
asked by
christine
507 views
How do I solve:
-9x + 2x to the third power +8x -12x to the third power
3 answers
asked by
Tawny
451 views
Eric has twice as much money as Marcia, who has $175 less than Laurel. But Laurel has as much money as Eric and Marcia have
3 answers
asked by
Anonymous
716 views
A car mass of 1330 kg is traveling at 28.0 m/s. The driver applies the brakes to bring the car to a rest over a distance of 79.0
5 answers
asked by
Emma
1,437 views
Question:Meg wants to install square tiles in a rectangular room. How can identifying common factors help her decide if any
5 answers
asked by
Pratigya
984 views
A car travels due east with a speed of 60.0 km/h. Rain is falling vertically with respect to the Earth. The traces of the rain
5 answers
asked by
Kristen
1,407 views
A company's records indicate that on any given day, 1% of their day shift
employees and 2% of the night shift employees will miss
2 answers
asked by
lisa
1,350 views
A mixture of 0.47 mole of H2 and 3.59 moles of HCl is heated to 2800C. Calculate the equilibrium partial pressures of H2 Cl2 and
3 answers
asked by
Ashley
695 views
how many mls of glycerol (FW= 92.1; density=1.26g/ml) must be used to make 250ml of a 0.15 M solution
2 answers
asked by
lulu78
607 views
How is E-business , grandma's treats doing in profit
1 answer
asked by
d walker
375 views
what is used to knead dough and to roll pastry ?
what is used to cook some less tender meats,to steam puddings and to asselerate
10 answers
asked by
Rose
1,093 views
How many moles of O2 are needed to react with 2.90 moles C2H2
3 answers
asked by
Nic
1,735 views
iatrochemistry
-what is it? -who created it? cant use wikipedia :s thanks!
3 answers
asked by
Regina
289 views
A 0.720 kg snowball is fired from a cliff 8.10 m high. The snowball's initial velocity is 14.2 m/s, directed 30.0° above the
3 answers
asked by
VitaX
853 views
find the equation of a line that passes through the origin and point (-3,6)
4 answers
asked by
Lauren
884 views
solve the simultaneous equations to find the coordinates of the point of intersection for the pair of lines of the simultaneous
3 answers
asked by
Lauren
1,079 views
When two numbers are added together, the result is 45.Twice the greater number is six more than five times the lesser number.
3 answers
asked by
111
701 views
You operate a gaming Web site, where users must pay a small fee to log on. When you charged $4 the demand was 510 log-ons per
1 answer
asked by
liz
538 views
I need help on a homework problem. "Determine a vector equation for the line perpendicular to 4x-3y=17 and through point (-2,4).
1 answer
asked by
Kate
790 views
Find the intersection of the line through (0, 1) and (4.4, 2) and the line through (1.9, 3) and (5.3, 0). (Round your answers to
3 answers
asked by
liz
1,016 views
roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many tickets did
3 answers
asked by
111
566 views
roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many tickets did
3 answers
asked by
111
466 views
Urban Community College is planning to offer courses in Finite Math, Applied Calculus, and Computer Methods. Each section of
1 answer
asked by
liz
1,006 views
roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many STUDENT
3 answers
asked by
111
512 views
What would john dickinson think of the Boston Tea Party?
3 answers
asked by
Angelina
418 views
NiF2(aq)+Fe2(SO4)3(aq) ==NiSO4 (aq) + FeF3 (s)
balance each of the following chemical equations. Express your answer as a
3 answers
asked by
Lisa
1,769 views
A 506 g block is released from rest at height h0 above a vertical spring with spring constant k = 500 N/m and negligible mass.
5 answers
asked by
VitaX
935 views
Balance the following equations?
a) Fe(OH)2 + 2O2 + 3H2O �¨ Fe(OH)3 (b) 5Sr + 6H2O �¨ 7Sr(OH)2 + 8H2 (c) 9Al + 10Fe3O4 �¨
3 answers
asked by
Ashley
452 views
Write and balance the reaction for the complete combustion of methanol, CH3OH. (Type your answer using the format CO2 for CO2.
2 answers
asked by
Ashley
659 views
I need a brief summury of the four staged of transformations learning cycle
1 answer
asked by
laura
456 views
1) Minimize versus minimise. Which is UK English & which is US English?
2) After cleaning, all waste must be properly disposed
2 answers
asked by
ann
1,299 views
What mass of calcuim chloride is needed to prepare 3.650L of 1.75 M solution?
1 answer
asked by
0karla
409 views
find the polar equation for hyperbola eccentricity of .8 and a vertex of (1,pi/2)?
1 answer
asked by
Damian
367 views
Determine the density of methane (CH4) in g/L at 24.7oC and 1.1 atm
ideal gas eqn: P = (rho)RT, where: pressure: P = 1.1 atm
2 answers
asked by
kellie
664 views
How do I fix this sentence?
some of the questions I asked him include “Tell me reasons why did you end up staying at the
1 answer
asked by
Anonymous
366 views
I need the chapter summary for 'Strange Objects' by Gary Crew ASAP!!! Please help me!
3 answers
asked by
Kiara
634 views
a leach-free area for dogs is to be created in a field behind a recreation centre. what length of fencing will be required, if
1 answer
asked by
Ted
425 views
I think I have mostly all the answers to my questions though I don't know if they are right. Any ways my last question is: what
1 answer
asked by
Rose
498 views
the period of time when the uterus returns to its normal size is the?
A) luteal phase B)menarche C)puerperium D)ovulation
1 answer
asked by
ceecee
406 views
How can I get dose from exposure?
Could you provide an example of it? Thank you
1 answer
asked by
A
312 views
Find the work done by a 15 N force in the direction of the vector (1,2,2) when it moves a particle from O(0,0,0) to P(1,-3,4)
1 answer
asked by
Christian
342 views
When using the Born-Haber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in
1 answer
asked by
Becca
1,204 views
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?
1 answer
asked by
D
422 views
Please answer each of the following questions in paragraph form. You should write one short paragraph for each response. Be sure
4 answers
asked by
Rosa
2,179 views
Draw an orbital diagram showing valence electrons and write the condensed ground-state electron configuration for Se3+
2 answers
asked by
KELLY
611 views
Write the condensed ground-stste electron configuration of the transition metal ion Mo3+
2 answers
asked by
KELLY
1,243 views
A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N
2 answers
asked by
Tia
544 views
Consider a frictionless track as shown in the figure below. A block of mass m1 = 4.25 kg is released from A. It makes a head on
3 answers
asked by
sam
1,084 views
how to do the calculation while taking 'A'
as 15 in the half angle formula used for calculating the value of sin 7.5 ?
2 answers
asked by
Anonymous
983 views
prove that cos 52 + cos 68 + cos172 = 0
4 answers
asked by
Anonymous
4,313 views
tell me if im right or wrong
For Kc,it only includes gas and aq for Kp, only includes gas. What about vapor pressure, do i use
1 answer
asked by
nighter
316 views
what is the difference between these two equation:
delta G= delta H-T(delta S) and deltaG(knot)=delta H(knot)-T(delta S knot)
1 answer
asked by
nighter
521 views
two springs and two masses are attached in a straight line on a horizontal frictionless surface. the system is set in motion by
1 answer
asked by
zainab
669 views
if cosA is 5/13 and tangent Ais 5/12 how do i find the sine
2 answers
asked by
hillary
1,006 views
I conducted a simple titration experiment and i need to write how and why are the results reproducible can some one help me in
1 answer
asked by
Charlie
516 views
Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 to x-5 of square root of Sin(t)dt.
Please
3 answers
asked by
Nick
480 views
I'm doing an analysis on a class text and a self chosen related text and one of the things the sheet says to do is to identify
1 answer
asked by
melissa
478 views
please correct me if i am wrong
the body has 3 different joints: A. fixed or immovable joints B. slightly movable C. freely
3 answers
asked by
chelsea
590 views
one side of a right triangle is 8 cm.the hypotenuse is 3 cm.more than twice of the other side.what is the measure of the other
1 answer
asked by
jarlee
344 views
In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has
2 answers
asked by
ann
1,294 views
Which sentence is correct?
1) This product is due for retest. or 2) This product is due for retesting.
1 answer
asked by
candy
308 views
For anyone with experience working with game theories...
1.) Two animals are fighting over some prey. Each can be passive or
1 answer
asked by
jo
718 views
how do you show that line 3x+y-2=0 is a tangent of the curve y=(4x-3)(x-2) and how to find the point of contact??
2 answers
asked by
Jack
516 views
show that the curves
y=2x^2+5x y=x^2+4x+12 y=3x^2+4x-6 have one point in common and find coordinates??
1 answer
asked by
tod
444 views
please could someone help me answer this question
why relations between britain and germany changed in the years 1936-1939? was
1 answer
asked by
kellie
416 views
design an experiment which will allow you to produce exactly 12.5gr of pure dry Copper Hydroxide also need
equipment required
1 answer
asked by
jorge fuenzalida
371 views
please could i say a huge thankyou you have helped me alot and i appreciate it thankyou again you are a star!
:]
2 answers
asked by
kellie
829 views
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)?
i used
1 answer
asked by
APRIL
331 views
A balloon is filled with 2.3 cm3 helium gas at 112.1 atm pressure. What will be the new pressure (atm) if the volume is changed
1 answer
asked by
kellie
469 views
The study of kinetics
group 1: Temp: 12.6 C T(K): 12.6+273= 285.6 1/T(K): 3.50X10^-3 this one is the x value Time: 816 sec Rate
1 answer
asked by
chemistyr
433 views
for english class i have to write a poem personifying something. I chose to personify a picture in a picture frame. I am not at
4 answers
asked by
claire
959 views
Two identical objects have charges 6.0*10^-6 and -2.0*10^-6 respectively. When placed a distance d apart, their force of
2 answers
asked by
Anonymous
609 views
how many times does a wheel turn in travelling 3km if a circumfrence of a wheel is 2m?
3 answers
asked by
Esin
376 views
Looking on the national gallery of art website (or it can be seen by typing the name of the painting in any search box) review
3 answers
asked by
m
672 views
show that the curves
y=2x^2+5x y=x^2+4x+12 y=3x^2+4x-6 have one point in common and find coordinates??
1 answer
asked by
tod
487 views
A 7.0-g bullet is fired into a 1.5-kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the
4 answers
asked by
john
2,164 views
What is the binary representation of the following hexadecimal number? What are the decimal numbers they represent when
4 answers
asked by
Drake
1,850 views
This questions is from Chapter 5, #54) Write a program to compute tips for services rendered. The program should request th
5 answers
asked by
Lee
1,075 views
The equation for the reaction between hydrogen gas and oxygen gas is:
2H2(g) + O2(g) ---> 2H2O(l) i) How much hydrogen will react
2 answers
asked by
paul
858 views
sarah has dimes and nickels which total $1.65. the number of nickels she has is 3 less than the number of dimes. how many of
1 answer
asked by
smith
377 views
two planes take off from an airport at the same time and head in opposite directions at 260mph and 275mph respectively. in how
2 answers
asked by
donny
531 views
Just so I know I am understanding this, can you please let me know if I am doing this right?
Simplify: 24u - 6(8 - 4u) + 52 24u
3 answers
asked by
Kate
335 views
Factor each expression
1-9a^2/a+1 times 4x^2-y^2/x+y Here is what I got: (1-3a)(1+3a)/a+1 times (2x-y)(2x+y)/x+y what am i doing
1 answer
asked by
Monica
409 views
A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle:
2 answers
asked by
Jerry
565 views
how would you factor this expresssion I'm so confused. Thank you
x^3-4x^2+3x/x+2 times (x^2-3x)
3 answers
asked by
Monica
319 views
what is the present value of 1000 paid at the end of each of the next 100 years if the interest rate is 7% per year
3 answers
asked by
Tiffany
2,176 views
What are the exact chemicals found in raw ground beef?
1 answer
asked by
AL 92
802 views
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