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Questions Asked on March 22, 2013

what is the Ka for ethylammonium cation,C2H5NH3^+, at 25 celsius?(Kb for C2H5NH2=4.7x10^-4 at 25 Celsius)
1. 3 answers
2. asked by Bb
3. 5,436 views
2. What is the reduction half-reaction for the following unbalanced redox equation?Cr2O72– + NH4+ Cr2O3 + N2 A.) Cr2O3 ->
1. 2 answers
2. asked by jack
3. 6,011 views
What is the pH of a .0035 M Ba(OH)2 solution.I did -log(.0070) to find pOH So 14-2.15=11.85 pH? Just want to double check.
1. 1 answer
2. asked by Sarah
3. 1,900 views
Mendel also studied the trait of flower color. Some plants had white flowers, while others had purple flowers.Consider the
1. 0 answers
2. asked by qwerty
3. 649 views
Can PbCO3 + AgNO3 yield any product? Or do these two not react? If they don't react, can you please explain why? If they do,
1. 1 answer
2. asked by Clio
3. 481 views
Mendel also studied pod color, which could be green or yellow, as well as seed shape, which could be round or wrinkled.Consider
1. 2 answers
2. asked by qwerty
3. 552 views
How many moles of ethyl alcohol C2H6O are in a 25.0 sample?How do I calculate?
1. 1 answer
2. asked by Yaneth
3. 1,331 views
Please check the if they are all opinions:Martin's neighbors accused the mother of eight of ordering phantom puppies to attack
1. 1 answer
2. asked by Celest
3. 358 views
The standard score for hours spent online at home for minnesotan was 3.00 approximately how many hours do minnsotan adults spend
1. 1 answer
2. asked by wally
3. 471 views
which is an exponential equationy=x^2 y=5^x y=2x-3 y=1/x
1. 1 answer
2. asked by Anonymous
3. 265 views
Consider the following cross involving the genes for pod color and seed shape:P generation: Green pods with round seeds= ____
1. 2 answers
2. asked by qwerty
3. 598 views
P.S - I really need help please help me with this, please i try and still i can not do this please!!!!!! :( :( :( :( :(The table
1. 6 answers
2. asked by HI, I'M NEW HERE SO I NEED HELP CAN'T DO THIS ! :(
3. 915 views
Jacy taught dancing and demonstarted ballet postions.What does position refer to in that sentence? A] dances for ballet B] the
1. 3 answers
2. asked by Celest
3. 496 views
Y=|x|Y=|1/2x| Can someone help me explain how decreasing the coefficient of x affects the graph
1. 1 answer
2. asked by Carol
3. 357 views
If the intensity of a person’s voice is 3.6×10−7W/m2 at a distance of 2.1 m, how much sound power does that person
1. 0 answers
2. asked by hannah
3. 702 views
What does / Equal in a formula?Such as 2A/3 =8+4A
1. 2 answers
2. asked by Nate
3. 323 views
A bone thickens byA. Activity of osteocytes in the medullary cavity B. increased secretion of calcium salts by osteoclasts C.
1. 0 answers
2. asked by Anonymous
3. 622 views
What is PAV glue?
1. 1 answer
2. asked by Anonymous
3. 363 views
What is PAV glue?
1. 1 answer
2. asked by Anonymous
3. 477 views
If a student took a running start before starting to travel up stairs, the power calculated will be incorrect. Why must the
1. 0 answers
2. asked by Justice
3. 424 views
What is PVA glue?
1. 1 answer
2. asked by Anonymous
3. 293 views
Happy late pi day to you math lovers.
1. 1 answer
2. asked by Anonymous
3. 335 views
Manager joe presents problems to his work group and gets suggestions before making a decision . Joe's management style is
1. 1 answer
2. asked by ?
3. 1,008 views
Let PQ, RS , and TU be parallel chords of a circle. The distance between chords PQ and RS is 4, and the distance between chords
1. 8 answers
2. asked by Knights
3. 1,744 views
How is friction involved in sledding and skiing?
1. 2 answers
2. asked by Anonymous
3. 388 views
Please check if this is an opinion:He said he hopes to reschedule his trip for next year
1. 2 answers
2. asked by Celest
3. 357 views
Why does some friction occur with seemingly smooth surfaces?
1. 3 answers
2. asked by Anonymous
3. 1,503 views
What is the pH of a solution that is .060M in potassium propionic and .085M in propionic acid?Ka=1.3E-5 for the acid. The answer
1. 1 answer
2. asked by Jonah
3. 705 views
1. briefly summarize the conflict between odysseus and the cyclops.2. in what ways are the sea and the role of poseidon
1. 6 answers
2. asked by ME! PLZ HELP
3. 3,696 views
Name 3 ways screws are used?
1. 1 answer
2. asked by D
3. 299 views
Who made the first light bulb?
1. 1 answer
2. asked by Andrea
3. 600 views
The solubility of iron(III)hydroxide is 4.39E-10M. What is the Ksp for this compound? I don't know how I would go about this
1. 2 answers
2. asked by Ezra
3. 561 views
what is the graph of y=-16t^2+8t+70
1. 1 answer
2. asked by beth
3. 262 views
Area of rectangle is 40m squared it has a length that is 2m less than 3 times its width what are the dimensions of retangle
1. 1 answer
2. asked by Steph
3. 416 views
joe draws a line segment 2 1/4 inches long. then he makes the line segment 1 1/2 inches longer. how long is the line segment
1. 3 answers
2. asked by jose
3. 575 views
Why is an echo weaker than the originalsound? 1. The echo has a shorter wavelength than the original sound due to the
1. 3 answers
2. asked by hannah
3. 1,707 views
"They have lived in what is now Ghana for many centuries," she went on. Does this sentence need quotations
1. 2 answers
2. asked by Dakota
3. 400 views
The atmosphere in a sealed diving bell contained oxygen and helium. If the gas mixture has 0.200 atm of oxygen and a total
1. 2 answers
2. asked by Double checking ans
3. 2,406 views
a launched rocket has an altitude, in meters, given by the polynimial h+vt-4.9t^2 where h is the height, in meters, from which
1. 2 answers
2. asked by pam
3. 573 views
Find the sum of the measures of the exterior angles of a convex 39-gon?
1. 9 answers
2. asked by Mariel
3. 7,372 views
How many ways can a teacher give 5 different prizes to 5 different of her 25 students
1. 2 answers
2. asked by Darcy
3. 5,697 views
Hello,I have a snapshot file of some questions on elasticity I would like to send. Is there an email address and what do you
1. 1 answer
2. asked by Manuel
3. 409 views
How many ways can a teacher give 5 different prizes to 5 different of her 25 students
1. 1 answer
2. asked by Darcy
3. 948 views
Assume the dimensions of a rectangle arecontinuously changing in a way so that the area, A, of the rectangle remains constant.
1. 2 answers
2. asked by Marto
3. 694 views
ABCD is a rectangle with B(-4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can
1. 4 answers
2. asked by Mariel
3. 652 views
ABCD is a rectangle with B(-4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can
1. 0 answers
2. asked by Mariel
3. 366 views
A CaCO3 mixture weighing 2.75 grams was treated with 9.75 mL of 3.00 M HCl to liberate CO2. After the CO2 was liberated, the
1. 1 answer
2. asked by Double checking ans
3. 1,187 views
which of the following represents the best strategy for synthesizing 2-butanol, CH3CH2CH(OH)CH3a) CH3CH=CHCH3 + [H30]+ b)
1. 3 answers
2. asked by michelle
3. 553 views
whats a change of dna in an organism?
1. 1 answer
2. asked by aisleen
3. 334 views
Solve for y: 5x+7y=23
1. 1 answer
2. asked by Anne's
3. 246 views
the ka of hypochlorous acid hclo is 3.5 x 10^-8. What is Kb for the hypochlorite ion?
1. 2 answers
2. asked by Bb
3. 1,932 views
Annie's math test scores are 68 82 82 88 92 98 Her median test score is..A.30 B.82 C.85 D.88 C? The high temperature for the
1. 3 answers
2. asked by Jerald
3. 664 views
How many grams of bromine are required to react completely with 3704 grams aluminum chloride?
1. 0 answers
2. asked by Alejandra
3. 450 views
How many grams of bromine are required to react completely with 37.4 grams aluminum chloride?
1. 1 answer
2. asked by Alejandra
3. 2,251 views
How many moles of NaCl are in 2.00mL of 1.00M NaCl?
1. 3 answers
2. asked by Alice
3. 401 views
The students in Mrs. Lees class recorded the temperature at noon every day for a ten day period.The temperatures were
1. 3 answers
2. asked by Jerald
3. 605 views
1. To come up with possible solutions to a problem is referred to as:A. decision making. B. concept mapping. C. critical
1. 2 answers
2. asked by Amy
3. 1,378 views
For diagonals of square Abcd intersect at e . If ae =2x+6 and bd =6x-10 find ac
1. 5 answers
2. asked by Alice
3. 9,140 views
1. When looking at the pros and cons of a problem, you are in the process of:A. gathering information. B. implementing a plan of
1. 1 answer
2. asked by Amy
3. 590 views
Why is mount Vernon famous?
1. 2 answers
2. asked by Anonymous
3. 516 views
Abcd is an isosceles trapezoid with a(10,-1) b(8,3) and c(-1,3). Find the coordinates of d
1. 1 answer
2. asked by Alice
3. 961 views
Question 14Give reasons for the answers to each of the following questions: a) Can a normal force be horizontal? b) Can a normal
1. 1 answer
2. asked by Pritesh
3. 1,022 views
A small 0.533-kg object moves on a frictionless horizontal table in a circular path of radius 1.10 m. The angular speed is 6.41
1. 0 answers
2. asked by cody
3. 707 views
The length of one base of a trapezoid is 19 inches and the length of the median is 16 inches. Find the length of the other base.
1. 2 answers
2. asked by Alice
3. 5,881 views
Lora (of mass 42.8 kg) is an expert skier. Shestarts at 2.3 m/s at the top of the lynx run, which is 114 m above the bottom.
1. 1 answer
2. asked by Anonymous
3. 2,171 views
The real image produced by a concave mirror is found to be 0.303 times the size of the ob ject.If the distance from the mirror
1. 0 answers
2. asked by kevin
3. 448 views
A solid is known to be either BaCO3 or CaCO3. It is dissolved in 6 M acetic acid. A pale yellow precipitate forms when K2CrO4
1. 2 answers
2. asked by Anonymous
3. 2,137 views
the average proportion of red candies in a pakage is 20% and an 8 oz package contains about 250 candies.What is the probability
1. 2 answers
2. asked by john
3. 437 views
What is the length of the curve, y=1/3(x^2+2)^(3/2), from x=0 to x=9?
1. 1 answer
2. asked by rohit1
3. 384 views
Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums
1. 1 answer
2. asked by rita
3. 518 views
The angles in triangle ABC satisfy 6sin∠A=3√3sin∠B=2√2sin∠C. If sin^2∠A=ab, where a and b are coprime positive
1. 4 answers
2. asked by rita
3. 470 views
a and b are positive numbers that satisfy the equation 1/a−1b=1/a+b. Determine the value of a^6/b^6+b^6/a^6.
1. 1 answer
2. asked by rita
3. 593 views
A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A
1. 2 answers
2. asked by rita
3. 423 views
If 55034.175 kJ of heat are transferred to 150 kg of ice at a temperature of -12.15 degrees C, calculate the temperature of the
1. 1 answer
2. asked by Dylan
3. 700 views
If an airplane directly north at 2000 km/hr and there are 50 mph/hr winds blowing west. whis is the actual path of the plane
1. 1 answer
2. asked by janaki
3. 451 views
Estimate the length of venusian year using the fact that the earth is 1.49*10'8km and venus is 1.08*10'8km from the sun on
1. 0 answers
2. asked by JOY
3. 488 views
n this problem, we will carry out some steps of the quantum factoring algorithm for N=15.(a) What is the period k of the
1. 0 answers
2. asked by s
3. 578 views
Alice has a very important piece of information, which is encoded as an integer k. She is storing this number in a quantum state
1. 4 answers
2. asked by s
3. 489 views
In Problems 1-5, we will work through an example of QFTM for M=6What is ω? You can use e, pi, and M in your response. Please do
1. 6 answers
2. asked by s
3. 523 views
At time t=0 s, the radius of a circle is equal to 15 cm. The radius of the circle increases at a rate of 0.5 cm/s. The rate of
1. 1 answer
2. asked by stranger
3. 603 views
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our
1. 1 answer
2. asked by Jack
3. 612 views
A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A
1. 0 answers
2. asked by Jack
3. 933 views
What is Positive Adverbs
1. 1 answer
2. asked by Jeff
3. 364 views
how do i calculate the NaOH molarity from a titration of KHP and NaOH after preparing KHP to standardise NaOH. KHP mass was
1. 1 answer
2. asked by k
3. 807 views
why is it necessary to try and keep the temperature constant during an experiment of determining pKa by pH measurements?
1. 1 answer
2. asked by k
3. 553 views
A countrywide estate agency specializes in selling commercial ventures. Their records show that the mean selling time is less
1. 3 answers
2. asked by general
3. 1,007 views
What is the minimum concentration?Determine the minimum concentration of the precipitating agent on the right to cause
1. 2 answers
2. asked by Amy
3. 1,379 views
If you are riding a bike and your front sprocket (the one with the pedals) has 40 teeth and the rear sprocket (the one connected
1. 1 answer
2. asked by Jordan
3. 538 views
What is the value of e^i(pi)?where i^2 =-1 ,e =exponential
1. 1 answer
2. asked by black_widow
3. 866 views
Given the the instantaneous voltage across a capacitor is VC=40(1-e -t/CR) Volts When being charged by a 40 volt DC supply, find
1. 1 answer
2. asked by Rachael
3. 471 views
Can I get answers from questions assigned from the text book?
1. 1 answer
2. asked by LEW
3. 1,066 views
2. Last week, Roger suddenly quit his job. He told his family he had decided to learn carpentry. He purchased a truckload of
1. 3 answers
2. asked by bookie
3. 1,557 views
when 12ohm resistance joint in triangle caculate 1arm resistance
1. 1 answer
2. asked by vinod
3. 564 views
What are the environmental health hazards that cause ill health,accidents,crises,and disasters within my community or any other
1. 1 answer
2. asked by Karabo
3. 549 views
what is Kc at 25 celsius for the following equilibrium?CH3BH3^+ +H2O <==> CH3NH2 + H3O^+ Kb=4.4x10^-4 I got 4.0x10^4 /
1. 1 answer
2. asked by Bb
3. 1,332 views
Mark found out that his profit varies as the product of the amount spent for production and the square root of the amount spent
1. 1 answer
2. asked by May Ann Pascual Aragon
3. 969 views
How many liters of ammonia gas can be formed from 11.3 L of hydrogen gas at 93.0 C and a pressure of 42.4 kPa?
1. 1 answer
2. asked by Venus
3. 553 views
OBSERVATION REPORT PROJECT of earlly child hold
1. 1 answer
2. asked by Anonymous
3. 663 views
1. Application means to:A. memorize the concepts, ideas, or vocabulary learned. B. judge the merit or value of the information.
1. 1 answer
2. asked by Amy
3. 586 views
A diagram showing the relationships among concepts and ideas used for organizing information is called:A. visualization. B.
1. 2 answers
2. asked by Amy
3. 1,165 views

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