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Jenn
Questions and answers by visitors named
Jenn
Questions (204)
The sum of the reciprocals of two consecutive even integers is 9/40. this can be represented by the equation shown.
13 answers
7,854 views
Determine the percent composition of your unknown mixture.
My data for refractive indexes for acetone is 1.365 and water is
5 answers
4,112 views
how does carbon dioxide affect the ocean?
3 answers
497 views
B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20.
Sorry I couldn't
15 answers
16,190 views
Homework help!!
∞ Σn=1 -4(-1/2)^n-1 This converges at -2 2/3, or -2.66– Correct? The formula I used is a1/1-r. then i put
4 answers
789 views
"Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area.
1 answer
561 views
"Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area.
1 answer
460 views
It turns out that the van der Waals constant b equals four times the total volume actually occupied by the molecules of a mole
1 answer
765 views
For HW we have to do test corrections on our practice exam, so if any of you know the answers to these I'd appreciate it. =]
(I�
1 answer
357 views
For HW we have to do test corrections on our practice exam, so if any of you know the answers to these I'd appreciate it. =]
1.
1 answer
461 views
Compounds like CCL2F2 are known as chloroflourocarbons, or CFCs. These compounds were once widely used as refrigerants but are
5 answers
4,409 views
which of the following is a chemical reaction?
A) propane forms a flame and emits heat as it burns. B) Acetone feels cold as it
4 answers
2,890 views
I need help on this question. Could someone give me tips on how to solve it?
thanks An emergency breathing apparatus often placed
1 answer
1,070 views
An emergency breathing apparatus often placed in mines works via the following chemical reaction: 4KO2(s) + 2CO2(g) to make
3 answers
2,801 views
I would really appreciate some help on this problem. =)
At 218 C, Kc = .00012 for the equilibrium NH4HS(s)<==> NH3(g)+ H2S(g)
4 answers
2,034 views
I have a science question that I don't quite understand.
Would you have to to have physical contact to exert a force? Not
1 answer
485 views
Define a variable and write an inequality. Then solve. A local summer baseball team plays 20 games each season. So far, they
2 answers
669 views
A two-digit # whoses cube root is the square root of the sum of its digits
5 answers
384 views
a jury of people is chosen from 10 men and 12 women. How many ways can a jury of 6 men and women be chosen?
4 answers
2,354 views
Four penguins are being pulled along very slippery (frictionless) ice by a curator. The masses of the three penguins are given
4 answers
1,008 views
WHICH SENTENCE IS MORE CORRECT AND WHY?
"Why can't I go with you?" asked Jake. or "Why can't I go with you?" Jake asked.
3 answers
405 views
Compare and contrast the processes of photosynthesis; aerobic respiration; and the two types of fermentation. Give examples of
2 answers
526 views
Which sentence is correct?why
I eat cake, carrots, pizza, and drink soda. I drink soda and eat cake, carrots, and pizza.
1 answer
415 views
Find the slope and y intercept. 3 - 1/2y=2x, 2y+9x+2=11+9x
1 answer
327 views
This is for organic chem lab.
I don't understand how to calculate the relative Rf values by setting ibuprofen to 1.00. For
2 answers
517 views
what are some of the ways that psychologists attempt to explain human behavior?
1 answer
456 views
A sample of 2-butanol has a specific rotation of -9.75 degrees. Determine the % ee (enantiomeric excess) and the molecular
3 answers
1,869 views
Can someone help me with these questions, I am having trouble with them. 3. Traumatic events do not always result in a
2 answers
1,049 views
An optical rotation study gives a result of +140 degrees. Suggest a dilution experiment to test whether the result is indeed
4 answers
1,324 views
Can someone help me with these questions, I am having trouble with them. 1. Traumatic events do not always result in a
4 answers
517 views
Partition (distribution) coefficient, k, of benzyl alcohol in hexane and water is 12.0. Choose for the correct equation for the
2 answers
692 views
Children, like adults, experience depression and anxiety. How do the experiences of children who feel anxiety or depression
3 answers
612 views
If sodium bromoacetate is used instead of sodium chloroacetate, how will the rate of reaction be affected?
5 answers
384 views
A peptide has the sequence:
Glutamate - His - Trp - Ser - Gly - Leu - Arg - Pro - Gly What is the net charge of the molecule at
1 answer
631 views
A peptide has the sequence:
Glutamate - His - Trp - Ser - Gly - Leu - Arg - Pro - Gly What is the net charge of the molecule at
2 answers
593 views
How does having a negative self-schema affect one's social interactions? How does social intelligence affect one's responses in
2 answers
560 views
Explain why the addition of bromine to trans-cinnamic acid takes place more slowly than the addition of Br2 to a normal alkene
2 answers
603 views
Are there Japanese Beetles in Italy? I couldn't find out if there were or not. Thanks for looking this up!
1 answer
411 views
I figured out this percent composition problem and I got REALLY close answers, so I wanted to check in with someone to confirm
1 answer
398 views
I figured out this percent composition problem and I got REALLY close answers, so I wanted to check in with someone to confirm
1 answer
439 views
Which bacterial plates control for:
1) If the E. coli cells were transferred correctly: 2) If the E. coli cells can grow on LB:
1 answer
426 views
f(x)=8 x^2 + x - 3 f(x+1)
*ah i cant get this one please help!
1 answer
227 views
Find x-intercept for the line 9x+10y+16=0
1 answer
381 views
Find the time it would have taken a horse to run:
displacement: +1609 m average acceleration: +0.0105 m/s^2 initial velocity:
1 answer
334 views
A rocket moves upward for 3 seconds
After 2 seconds, its speed is 10 m/s After another 1 second, its speed is 20 m/s Find
1 answer
354 views
I did 2/3 + 1/3 I got 3/3.
How do I do 7/15 + 9/20? I'm not good at adding fraction with different denominators.
4 answers
269 views
Solve the following inequality. Write the answer in interval notation
abs value of x+4<4
1 answer
361 views
1580 kg car is traveling with speed of 15 m/s. What is magnitude of horizontal net force that's required to bring the car to a
4 answers
807 views
292 kg motorcycle is accelerating up a ramp that is 30 degrees above the horizontal.
Propulsion force pushing the motorcycle up
5 answers
2,733 views
Rollercoaster has a dip that bottoms out in a vertical circle of radius r.
Passenger feels seat of car pushing upward on her with
2 answers
575 views
Angle x is in the second quadrant and angle y is in the first quadrant such that sinx=5/13 and cosy=3/5, determine and exact
4 answers
2,254 views
Locate the absolute extrema of the function on the closed interval
f(x) = 2(3-x) [-1,2]
4 answers
1,169 views
If Terry hiked 0.5km/h faster, he would have taken 1h less to complete a 15- km hike. What was Terry's hiking speed?
3 answers
367 views
Graph the following equation and find the Y-intercept Y=x+8
2 answers
460 views
Can some one help me get this into y intercept form x+3y=6. And then explain how to graph it
1 answer
386 views
can some one help me with this Find the equation of the line using these two points. (-3,-7) and (-9,-6) it has to be in
1 answer
279 views
Could someone help me please? Does anyone know how a human service agency determines goals and objectives? I'd appreciate it.
3 answers
371 views
Given f(x) = 2root x+7 and g(x) = 5x2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can someone please explain
1 answer
371 views
Given f(x) = 2root x+7 and g(x) = 5x^2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can someone please explain
1 answer
344 views
Given f(x) = 2root x+7 and g(x) = 5x^2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can someone please explain
1 answer
336 views
operations on functions:
Given f(x) = 2root x+7 and g(x) = 5x^2 – 9, evaluate (f/g)(2) . I don't understand how to do this, can
1 answer
422 views
"Spreading light...without taking part in the affairs of the world...seeing as a trap...all expantion into Africa or the
2 answers
622 views
I need help with properties of a TRAPEZOID, please!
-Are opposite sides congruent AND parallel? -Are opposite angles congruent?
2 answers
1,022 views
A solution of sodium chloride in water has a vapor pressure of 18.5 torr at 25°C.
What is the mole fraction of NaCl in this
3 answers
918 views
I am doing an assignment on how to improve patient intake efficiency. Would assigning one staff member the task of dealing with
1 answer
345 views
Using the 68-95-99.7 rule:
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation
2 answers
802 views
My fiancé does not think he needs a credit card right now. We are already in enough debt. It has actually consumed our lives.
2 answers
595 views
My fiancé does not think (he) needs a credit card right now. (We) are already in enough debt. It has actually consumed (our)
2 answers
529 views
Ok i need to write a paragraph and then find the adverbs and adjectives. I have found some of them, but I am afraid I might of
4 answers
575 views
what impulse is needed to stop a 45 g mass traveling at 42 m/s?
4 answers
2,369 views
Will Zinc react with Zn(NO3)2, Cu(NO3)2,Pb(NO3)2, Mg(NO3)2, AgNO3, Al(NO3)3, or Fe(NO3)3
2 answers
637 views
Will Na2CrO4 react exactly the same as Na2CrO7 when mixed with Pb(NO3)2
3 answers
503 views
Assuming gasoline is 100% isooctane, with a density of 0.692g/mL, what mass of carbon dioxide is produced by the combustion of
4 answers
1,260 views
A uniform board 12 ft long weighs 10 lbs. Two feet from the left is centered a 3 lbs. structure. How far from the left end is
4 answers
393 views
two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10m/s and the other is at rest. what
3 answers
528 views
two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10m/s and the other is at rest. what
2 answers
981 views
a satellite is in a circular orbit at a constant velocity around the earth. how much work is done on the satellite?
4 answers
539 views
Determine the exact value for the constant k such that the area of the region bounded by the curves y=x and y=kx^2 is equal to
1 answer
489 views
Help!
Initially there are 6x10^9 radioactive of element W (decay constant 0.173/day) in a sample. As a nucleus of W decays, it
1 answer
415 views
What are three most important concepts or principles of ethics involved in medicine and the provision of health care services?
1 answer
446 views
Input 4 21 36 38 56
Output 57 40 25 23 5 what is the rule?
1 answer
325 views
input 50 1 10 25 5 2
output 1 50 5 2 10 25 What is the rule?
1 answer
319 views
calculate the number of K atoms in a 1.00 ug sample of pure KCL. K=39.1 g/mol and KCL= 74.6 g/mol.
1 answer
397 views
What is the molarity of the hydrochloric acid solution used if 25mL of it reacted with excess calcium carbonate to produce 5.3g
3 answers
936 views
multiply and simplify
k^2+10k+16 k^2+6k __________ x _________ k^2+14k+48 k^2+5k+6
2 answers
758 views
Why is propanol ammonia a better separator of red leaf extract in thin layer chromatography that propanol water?
2 answers
511 views
find the given fuctions f and g, find f*g and state the domain of f*g, f(x)=�ã2x-5,g(x)=|x-1|
1 answer
365 views
find the given fuctions f and g, find f*g and state the domain of f*g, f(x)=�ã2x-5,g(x)=|x-1|
1 answer
315 views
When three or more lines intersect at one point they are, ______.
Thank You ^0^
5 answers
3,485 views
In triangle ACE, G is the centroid and BE=9. Find BG and GE.
(segments BE and AD cross in the middle of the triangle, BE overlaps
10 answers
9,527 views
For the given function f,g, and h, find f*g*h and state the exact domain of f*g*h
f(x)=e^x g(x)=log_x h(x)=x/x+8
1 answer
846 views
For the given function f,g, and h, find f*g*h and state the exact domain of f*g*h
f(x)=e^x g(x)=log_x h(x)=x/x+8
3 answers
572 views
Identify and discuss the differences between the terms ‘theories,’ ‘laws,’ and ‘hypotheses.’ Describe ‘controlled
2 answers
1,013 views
On a number line, point A has coordinate 5, and point D is on the line such that AD = 8. What are two possible coordinates of
4 answers
601 views
FQR Question: The role of political parties inorganizing Congress
1 answer
321 views
Calculate pH when 0.060 mols of HCl are added to 1.000 L of a buffer containing 0.499M KH2PO4 and 0.193M K2HPO4
2 answers
500 views
Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the
1 answer
370 views
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to manmade factors
2 answers
516 views
If you have a tank containing 10,000L of water. what weight of CaSO4.H2O must be added to math the Ca+ concentration of 130ppm
1 answer
309 views
19pi/7
Which quadrant does the terminal side lie on?
4 answers
1,470 views
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