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Kelly
Questions and answers by
Kelly
, page 3
Questions (805)
How do you express these problems as single trigonometric function values or as single numbers, using identities?
1.
1 answer
394 views
When 0.767 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 125C is observed.
Assume the
3 answers
495 views
Write the condensed structure for Methylpropyl ether
Would it be C4H11O? CH3-O-CH3CH2CH3
2 answers
638 views
the ratio of single screen theaters to multiple screen theaters is 1 to 15. if there are 9 single screen theaters, how many
4 answers
355 views
2 KClO3(s)--> 2 KCl(s) + 3 O2(g)
How many milliliters of O2 will form at STP from 38.8 g KClO3?
3 answers
749 views
Reacting 959 mol of SiO2 with excess carbon yields 28.8 kg of SiC. What is the percentage yield?
SiO2 + 3C--> SiC + 2 CO
2 answers
499 views
Check my work.
Calculate the correct time in brackets: 1. 1:00am at 30W = (11:00pm) at 60W 2. 3:00pm at 15W = (1:00pm) at 45W 3.
2 answers
665 views
Solid carbon dioxide (dry ice) goes from solid to gas at -78C. The molar heat of sublimation is 25.3 kj/mol. In one experiment
2 answers
1,013 views
Hey
1)how do you estimate the line widths (full width half maximum) of the peaks arising from: (a) The emission of a hollow
1 answer
385 views
The diffusion coefficient for calcium ions crossing a biological membrane 10nm thick is 300 micrometers squared/second and the
2 answers
543 views
What are the similarities and differences of federal and state systems?
1 answer
364 views
This week, the Laketown Cruise Company took its boat on 19 cruises, carrying the boat's full capacity of 46 guests on each
1 answer
474 views
Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the
1 answer
905 views
In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is
2 answers
647 views
An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and
3 answers
1,794 views
An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and
4 answers
2,401 views
In Figure 8-34, a 1.2 kg block is held at rest against a spring with a force constant k = 785 N/m. Initially, the spring is
2 answers
602 views
***EXTRA CREDIT*** Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides
3 answers
822 views
Why Emerson considered man is an analogy? And What is th relationship between human, god and nature in Emerson's point of view?
2 answers
503 views
Why is Whitman the father of America's poet in Emerson's point of view?
1 answer
491 views
This isn't a specific math question. I'm just looking for some tips for my calculus midterm tomorrow. I'm terrible at math and I
4 answers
630 views
A 150.0 g aluminum cup is filled with 450. g of water at 95℃. The combination cools uniformly by 1.20℃ per minute. At what
1 answer
600 views
The energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition
1 answer
623 views
Suppose now that the air carts below are both moving to the right initially. The cart to the left has a mass m1 and an initial
3 answers
676 views
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by
4 answers
1,601 views
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by
3 answers
802 views
What mass of Zn will be dissolved in 10 mL pH=2 HCl solution?
Zn + 2HCl--> ZnCl2 + H2
2 answers
532 views
how many joules are required to heat a frozen can of juice (360 grams) from -5C (the temperature of an overcooled refrigerator
4 answers
2,598 views
A sample of argon gas has a volume of 715 mL at a pressure of 1.34 atm and a temperature of 144 Celsius.
What is the volume of
4 answers
824 views
f'(x) < 0 if |x| < 1
And apparently this means f is decreasing on (-1, 1). I don't understand this. I know f'(x) < 0 means the
3 answers
614 views
Im totally lost on how to do redox reactions. Can any one show me the steps on how to do MnO4-1 +C7H60 => Mn2 +c7H6O2?
im trying
2 answers
537 views
Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.
2 answers
549 views
Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.
2 answers
537 views
Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.
4 answers
4,672 views
What volume of 0.123 M AgNO3(aq) is needed to form 0.657 g of AgCl(s)?
0.564 mL. 18.6 mL. 37.2 mL. 1.77 L.
3 answers
1,867 views
another way to word:
the effects of temperature on human and fungal amylase
1 answer
706 views
is starch present at time zero? should it be present? why or why not?
1 answer
365 views
what is the relationship between the amount of starch and maltose present during starch hydrolysis.
3 answers
1,489 views
advantage and disadvantage of respiring anaerobically?
1 answer
408 views
1.This section of a monograph would tell you if the drug were soluble in water.
a.description b.how supplied c.clinical
6 answers
697 views
when breathing slowly a person inhales air at room temperature and exhales it at body temperature. We may assume that the lungs
2 answers
648 views
f(x)= 1/x, x greater than 7
3x, x less than or equal to 7 Find f(7t)
1 answer
272 views
y=x^2-11x+30
For what values of x is y greater than or equal to 0?
2 answers
505 views
6ln(x+8)+1/8lnx-ln(cosx)
4 answers
398 views
find a formula for f^-1(x)
f(x)=x+15/x-15
1 answer
291 views
f(x)= 1/x, x greater than 7
3x, x less than or equal to 7 Find f(7t)
1 answer
255 views
let f(x)=sqrt(x-3), g(x)=sqrt(x^2+3)
Find a formula for f*g and state the domain of the composition
3 answers
628 views
Write this expression as a single logarithm
6ln(x+8)+1/8lnx-ln(cosx)
3 answers
493 views
let f(x)=(7+x)/(7-x), g(x)=7x/(7-x)
Find formula for f*g and state the domain of the composition
1 answer
305 views
what happens to co2 levels with increasing sugar concentration?
1 answer
758 views
Find the Limit
lim as t approaches 1 of (t^3+5t^2-13t+7)/(t^3-3t+2)
1 answer
397 views
sketch the graph of a function f that is continous everywhere except at x=2, at which point it is continous from the right.Also
1 answer
441 views
Find f'(x) when f(x)=sin(1/x^3)
1 answer
312 views
Both x and y denote functions of t that are related by the given equation. Use this equation and the given derivative
3 answers
1,706 views
A 15 ft ladder is leaning against a wall.If the top of the ladder slips down the wall at a rate of 5ft/s, how fast will the foot
4 answers
2,867 views
QuadPlex Cinema is the only movie theater in Idaho Falls. The nearest rival movie theater, the Cedar Bluff Twin, is 35 miles
2 answers
547 views
If 75 g of ice at 0.0 Celsius were added to 1.5 L of water at 75 Celsius, what would the final temperature of the mixture be?
1 answer
484 views
Train A travels at 100 mph in the same direction. Train B travels at120 mph on a parallel track. Train A passes a station at
2 answers
657 views
Construct a frequency distribution table for the following scores. Include columns for proportion and percentage in the table.
Sc
4 answers
1,320 views
Vehicle A averages 14 miles per gallon of gasoline, and Vehicle B averages 36 miles per
gallon of gasoline. At these rates, how
2 answers
685 views
what is are some free websites that can give me rational and irrational practice?
1 answer
365 views
I don't know if I suppose to do LCM or other?I'm going to need help.
Beyonce visits her parents every 6 days and Jay-Z vists his
4 answers
593 views
Using dimensional analysis, which one of the following equations is dimensionally correct? ( a → m/s2, v → m/s, x → m , t
2 answers
1,228 views
The ratio R at which paint can be sprayed from a spray gun may be expressed as R=a.t and R is measured in m3 / s and time is
3 answers
572 views
A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm
2 answers
1,238 views
BW made c cookies to divide evenly amoung O,TS,SB,and RD and BW himself. Write an algebraic expression that represents the
3 answers
516 views
An airport worker needs to make it across a luggage belt in order to retrieve a stuck suitcase. The belt is moving with 1.6 m/s,
1 answer
396 views
A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried
1 answer
376 views
what is 6 to the second power
3 answers
334 views
Substances A and B with the same mass and the same initial temperature absorb the same amount of heat energy. The final
2 answers
966 views
A 40.0g sample of an unknow, yellowish-brown, pure metal was heated to 62degrees Celcius and put into a coffee cup calorimeter
3 answers
722 views
A 40.0g sample of an unknow, yellowish-brown, pure metal was heated to 62degrees Celcius and put into a coffee cup calorimeter
3 answers
634 views
I have tried usingg the molecular formula, formulas in the text book but my answers dosent match any of the multiple choice
3 answers
572 views
A golfer imparts a speed of 32.1 m/s to a ball, and it travels the maximum possible distance before landing on the green. The
2 answers
544 views
Michael Jordan, formerly of the Chicago Bulls basketball team, has some fanatic fans. They claim that he is able to jump and
4 answers
3,204 views
What will be the final temperature if 2000g of copper at 95 degrees loses 10 kcal of heat?
5 answers
1,523 views
I need help creating an equation for a piecewise defined function with two different rules, that is continuous but not
1 answer
366 views
Your 401 (k) Account at East Coast Yachts
You have been at your job for East Coat Yachts for a week now and have decided you need
3 answers
1,179 views
The Ka values of H2CO3 are shown below.
Ka1 4.6 10-7 Ka2 4.4 10-11 What is the pH of a 0.17 M solution of Na2CO3?
3 answers
1,112 views
I am going to write about illegal immigration and my topic is putting fence on the border and I am for it.
my question that i
3 answers
564 views
How many times a year does the moon go through its cycle or phases?
1 answer
327 views
How many times a year does the moon go through its cycle or phases?
2 answers
581 views
Thanks for the help on putting up fence. I need help with starting general information (Background on illegal immigration&
4 answers
483 views
Thanks for help and websites. Here is what I've written about the building fence so far. please tell me if I'm on the right
2 answers
573 views
Is it possible for the x-intercept and the y-intercept of a straight line to be at the same point? Why or why not?
9 answers
297 views
An escalator is 15.0 m long. If a person stands on the escalator, it takes 38.0 s to ride from the bottom to the top.
(a) If a
2 answers
1,086 views
a grid has line at 90-degree angles. There are 12 lines in one direction and 9 lines in the other direction. Lines that are
2 answers
993 views
solve log2(3x-1)-log2(x-1)=log2(x+1)
i have absolutely no idea how to solve this. can anyone help me, please?
1 answer
469 views
40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been
2 answers
959 views
If there are 8 red disks numbered 1 through 8, and 6 yellow disks numbered 9 through 14 placed in a box. Find the probability of
4 answers
1,663 views
McMaster University researchers Margo Wilson and Martin Daly showed 209 male and female students pictures of attractive and
1 answer
376 views
The weather bureau reports that a cold front has just passed Austin and is heading toward San Antonio at 42kph. Since you know
1 answer
477 views
Im am so lost....
A bank conducts a survey in which it randomly samples 400 of it customers. The survey asks the customers which
4 answers
1,962 views
An object initially at rest experiences an acceleration of 1.4 m/s^2 for 5.0s and then travels at that constant velocity for
2 answers
1,007 views
please show how you would divide 35.6728 by 5.246
1 answer
247 views
107 total foreign language students
42 take spanish 46 take french 45 take german 8 take spanish & french but not german 6 take
2 answers
1,254 views
Mars has a mass of 6.5 x 10 to the power of 23 kg and the sun has
a mass of 1.99 x 10 to the power of30 kg. How many orders of
1 answer
456 views
My son's math homework asks him to find each product by factoring the tens. 6 x 2, 6 x 20 and 60 x 20. There is no explaination
9 answers
6,073 views
2 isosceles triangles have the same height. The slopes of the sides of triangle A are double the
slopes of the corresponding
5 answers
1,961 views
I am driving to Atlanta on the I-85 in my G35 Coupe at 40.0 m/s and I pass a cop. Will I get a ticket? The speed limit is 70.0
2 answers
1,131 views
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