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July 14, 2016
Why do different substances have different Rf values ? used in chromatography.
1 answer
asked by
Stephenie
3,417 views
N2H4 + 2H2O2= N2 + 4H2O What are the mole ratios of hydrazine (N2H4) to hydrogen peroxide (H2O2) and hydrazine to water
4 answers
asked by
Damon
3,378 views
1. He is less tall than Tom.
2. Tom is taller than he. 3. He is less smart than Tom. 4. Tom is smarter than he. 5. He is less big
1 answer
asked by
rfvv
3,256 views
The expenses of orphanage are party constant and partly vary as the number of the boys in the orphanage. The expenses were Rs.
6 answers
asked by
Madhura
3,251 views
In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be
6 answers
asked by
Mariah
2,769 views
The reaction 2NO (g) + 2H2 -> N2 (g) + 2H2O (g) was found to follow the rate law, rate = k[NO]^2[H2]. By what factor will the
1 answer
asked by
Mikey
2,659 views
Mr.Adams had a coin collection including only nickels, dimes, and quarters He had twice as many dimes as nickels and half as
4 answers
asked by
Emily
2,539 views
A hiker begins a trip by first walking 25.0 km 45.0° south of east from her base camp.On the second day she walks 40.0 km in a
2 answers
asked by
yow
2,501 views
The minute hand turns through __________ degrees from the digit 2 to 11 on a clock
4 answers
asked by
varun
1,967 views
The vector u = (4300, 5200) gives the number of units of two models of laptops produced by a company. The vector v = 1800, 1200
1 answer
asked by
will
1,934 views
How many numbers upto 450 are divisible by 4,6,8
1 answer
asked by
Sanjeevani
1,854 views
Calculate the amount of water produced by the combustion of 44g of propane and 16g of methane.
1 answer
asked by
Praneetha N Upadhyaya
1,825 views
The side of a triangle are in the ratio 2:3:4.If the shortest side measure 6cm,what is the perimeter of the triangle?
3 answers
asked by
pratikshya
1,378 views
6.025*10^20 molecules of acetic acid are present in 500 ml of its solution .What is the concentration of the solution?
2 answers
asked by
Kanchan
1,350 views
The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate
3 answers
asked by
Anonymous
1,302 views
How much heat is produced by the complete combustion of 287 g of CH4?
CH4(g)+2O2(g)→CO2(g)+2H2O(g)ΔH∘rxn=−802.3kJ
1 answer
asked by
Anonymous
1,185 views
Show that the line with parametric equations x = 6 + 8t, y = −5 + t, z = 2 + 3t does not intersect the plane with equation 2x
1 answer
asked by
Jake
1,109 views
1.06g of Na2CO3 is dissolved in water to make 250cm^3 solution. 10.0 cm^3 of this solution was further diluted to make 500cm^3
1 answer
asked by
Gary
1,102 views
Given that Force 1 = 70 pounds and Force 2 = 120 pounds , find the angle between the forces if the magnitude of the resultant
1 answer
asked by
oleg
1,008 views
The concept of federal law taking precedence over state or local law is commonly called the __________.
A. Preemption Doctrine B.
3 answers
asked by
Angela
992 views
If you weigh 300 N on earth, then what is your mass and weight in mars?
1 answer
asked by
Charlaine
941 views
he Supreme Court decision in the case of Brown v. Board of Education was important because it exhibited __________.
A. the use of
2 answers
asked by
Angela
938 views
A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom
of the wheel from a ramp
1 answer
asked by
Anonymous
936 views
Find the area of the shaded region, if the rectangle has dimensions 8m and 18m and the circle is
inscribed in the rectangle. I
3 answers
asked by
Anne
936 views
Mary has 6262 square blue tiles and a number of square red tiles. All tiles are the same size. She makes a rectangle with red
1 answer
asked by
Luvish
934 views
an antelope moving with constant acceleration covers the distance between two points 70.0m apart in 7.00 s.Its speed as it
1 answer
asked by
Belle
912 views
Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and
1 answer
asked by
Gina
871 views
A stone thrown upward at the top of the tower reaches the ground after 5 sec. A second stone is thrown down with the same speed
1 answer
asked by
sai
847 views
You often insert your company's logo into documents you create. One way to make it easier for you to
quickly insert it is to save
1 answer
asked by
Daniela
829 views
Three dozen eggs, 25% broken. How many left? ( Answer with working outs) please.
2 answers
asked by
Luciana Brix
792 views
1. He has less money than Tom.
2. Tom has more money than he. 3. He has less time than Tom. 4. Tom has more time than he. 5. He
1 answer
asked by
rfvv
762 views
A ball is launched from a slingshot. Its height, h(x), can be represented by a quadratic function in terms of time, x, in
1 answer
asked by
Anonymous
758 views
What is the default file extension for a file saved in Word 365?
A. .docext B. .doc365 C. .docx D. .doc My answer is C.
1 answer
asked by
Daniela
744 views
Suppose the annual expected mortality rate from coronary disease is 500 per 100,000 individuals. In a specific community of
1 answer
asked by
Redgy
717 views
Why water can be used as a solvent in paper chromatography?
1 answer
asked by
Steph
706 views
A ferris wheel has a radius of 13 m. It rotates once every 24 seconds. A passenger gets on at the bottom
of the wheel from a ramp
1 answer
asked by
Anonymous
696 views
The __________ clauses in the Constitution collectively prohibit states from enacting laws that unduly discriminate in favor of
2 answers
asked by
Angela
692 views
The ratio of a triangle's sides is 4:3:6. If the length of the hypotenuse is 1/4, what is the value of the length of the short
1 answer
asked by
Jane
678 views
10. _______ allows you to specify how a photo is positioned in the text of your document.
A. Align Photo B. Align Text C. Wrap
1 answer
asked by
Daniela
667 views
What do obesity trends presented by surveillance systems help with?
present trends in colorful, creative maps change behavior
1 answer
asked by
Anonymous
664 views
For your communication intervention, you are trying to get young mothers in a developing country to use more nutritious
1 answer
asked by
Anonymous
657 views
a heavy object is dropped from the top of a 25 m tall building and it reaches the ground in 2.26 seconds determine the
1 answer
asked by
glenn
637 views
a driver traveling 42 mph speeds up to 58 mph over distance of 660 feet how long does this increase in speed take what is the
1 answer
asked by
glenn
632 views
A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record
1 answer
asked by
Anonymous
625 views
a sports car can accelerate fo 0 to 60 in 3.2seconds what is the acceleration of the car in m/s^2 what distance would it travel
1 answer
asked by
glenn
623 views
find the density of NH3 gas at 100celsius when confined by a pressure of 1600mmHg
2 answers
asked by
gladiza
622 views
When an object is droped from a certain height , it's distance from the starting point varies as the square of the time it has
3 answers
asked by
Sarvesh
614 views
Daniel drives 30 mph to the toy store and 45 mph back home, taking the same route both ways. If the total trip took two hours,
3 answers
asked by
Gina
613 views
A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record
1 answer
asked by
Anonymous
611 views
How do you differentiate sin^2(cos t)
My work: =2sin(cos)(cost)(-sint)
1 answer
asked by
Nora
610 views
the driver of a truck going 50 mph applies the brakes giving the truck a deceleration of 4.5 m/s^2 how long will it take the
1 answer
asked by
glenn
599 views
On Feb. 27th, 2010, an earthquake of magnitude 8.8 occurred off the coast of Chile lasting
up to 3 minutes. Five months later, a
1 answer
asked by
Chris
598 views
Alexis has a pencil bag containing one of more of each of the following: red pens, blue pens, mechanical pencils, and black
1 answer
asked by
Anonymous
595 views
If 6 bass are randomly selected from Clear Lake, find the probability that the mean weight is greater than the mean of those you
1 answer
asked by
Anonymous
594 views
1. Your name has been deleted from the list.
2. Your name has been deleted out of the list. 3. Your name has been ________ from
1 answer
asked by
rfvv
586 views
a number rounds off to 4000.The digit in the hundreds place is twice the digit in the tens place.The sum of the digits is 12.The
1 answer
asked by
rosemarie
573 views
the maximum possible speed a certain car can achieve is 80 m/s (about 180 mph) the car covers a distance of 1km while
1 answer
asked by
glenn
571 views
How many molecules are in 5.2L of carbon dioxide gas?
1 answer
asked by
Joey
568 views
1. Eli shared his chocolate with the other kids.
===================== Does this sentence mean #2 or #3? Did he or the others eat
1 answer
asked by
rfvv
562 views
The graph above shows the relationship between the time it takes in minutes for Rosina to walk versus run to different
1 answer
asked by
mia
555 views
the patient is seen by his family physician for follow-up treatment of recently diagnosed asthmatic bronchitis. the physician's
1 answer
asked by
erika
552 views
a motorcyclist drives from a to B with a uniform speed of 30km/h find its average speed
1 answer
asked by
sivapriya
538 views
Mapping Notation for
y=2log _3(-3x +9)-2 log_3 mean log base 3
1 answer
asked by
Matt
515 views
What is the volume of a balikbayan box with a length of 21√5 inches, width of 12√3 inches and a height of a 25√3 inches?
Th
1 answer
asked by
Ari
503 views
true or false:
log (x-y) = log (x) - log(y) I don't know the the first part, but looking at the second part, wouldn't log (x) -
1 answer
asked by
Redgy
498 views
Five masses are positioned as follow in the x and y axis:
m1 = 1 kg at (0,0) m2 = 2 kg at (4,0) m3 = 3 kg at (4,5) m4 = 4 kg at
0 answers
asked by
Justin
491 views
If the battalion of soldiers is formed into a solid square,there would be sixteen fewer men in the front than there would be if
0 answers
asked by
Nitesh
483 views
Determine u⋅v if u =5, v =3,and θ =π/3 ,where θ is the angle between u and v.
A) 7.50 B) 12.99 C) 10.61 D) 10.25 E) 9.05
1 answer
asked by
Max
480 views
How do you solve sin2θ−cosθ=0 between -pi/2 less than or equal to θ less than or equal to 3pi/2?
2 answers
asked by
Anonymous
470 views
Find the angle between the vectors u and v if u=i+4j and v=−i+2j.
1 answer
asked by
anna
466 views
1. Let's go around this area once more.
2. Let's walk around this area once more. 3. Let's get around this area once more. 4.
1 answer
asked by
rfvv
465 views
Write an equation for a log functions base 2 whose graph has the following properties:
vertical asymptote of x=-6 Domain of x<-6
1 answer
asked by
Stacy
444 views
2kg water vapour 100degrees is condensed to water at 40degrees. The quantity of heat required?
2 answers
asked by
Hji
428 views
Find the angle between the vectors u and v if
u = (-1,4) v = (3,-4) a. 155.93 b. 158.58 c. 158.13 d. 155.24 e. 157.17
2 answers
asked by
anna
420 views
A isosceles right triangle has leg of 15. What is its area
2 answers
asked by
jason
399 views
if log_a 3 = log_b 27 then show that b=a^3
log_a mean log base a.
1 answer
asked by
Anonymous
398 views
By how much taller is the door 2meters than the boy 78meters
1 answer
asked by
Miguel
397 views
After solve a function I get these
X>_-1(greater than equal to) X>_3 & X>_2?what will be it's domain?
0 answers
asked by
X
397 views
If a family plans to have four kids what is the probability that they will have at least one girl
1 answer
asked by
Cathy
388 views
equation log_b a = c.
a) If 0 < a < 1 < b, what can you conclude about c? b) If a < 0 < 1 < b, what can you conclude about c?
1 answer
asked by
Stacy
388 views
if the velocity of a progressive wave with a periodic frequency of 10khz is 330m/s.calculate it's wavelength.
1 answer
asked by
versatile
386 views
If I travel 200 feet in 2.92 seconds what is speed I'm traveling at
1 answer
asked by
Anonymous
377 views
In phythagorean triplet how to find numer 7
1 answer
asked by
Monesh
367 views
For what value of k will the following function have y-intercept of 5.
log{base 3} (-5x +k^2)-1
1 answer
asked by
Stacy
365 views
How far could you drive for $90?
1 answer
asked by
Alisa Jones
348 views
What f-1(x) of f(x)=(1/3)^x
2 answers
asked by
Anonymous
330 views
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