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Questions Asked on February 27, 2013

A triangle has side lengths 24, 32, and 42. Is it a right triangle? Explain
1. 7 answers
2. asked by georgetooraw
3. 8,870 views
A certain indicator, HA, has a Ka value of 1.3 × 10-6. The protonated form of the indicator is blue and the ionized form is
1. 1 answer
2. asked by Nancy
3. 7,792 views
A window washer pushes his scrub brush →−up a vertical window at constant speed by applying a force F as shown in Fig.
1. 6 answers
2. asked by Bella
3. 7,026 views
Javia ran 8 laps around a track to run a total of 1 mile on Monday. How many laps will she need to run on Tuesday to run 3/8 of
1. 31 answers
2. asked by Kim
3. 6,860 views
How many grams of O2 are needed to produce 45.8 grams of Fe2O3 in the following reaction? 4Fe(s)+3O2(g) - 2Fe2O3(s)
1. 2 answers
2. asked by richard w
3. 5,330 views
Congruency means that two figures or items are exactly the same size and shape. Where in life would it be vitally important for
1. 13 answers
2. asked by KittyKitKatKoo
3. 5,138 views
1-propanol (P1° = 20.9 Torr at 25 °C) and 2-propanol (P2° = 45.2 Torr at 25 °C) form ideal solutions in all proportions. Let
1. 1 answer
2. asked by Anonymous
3. 4,700 views
A long jumper leaves the ground with an initial velocity of 12 m/s at an angle of 28-degrees above the horizontal. Determine the
1. 2 answers
2. asked by Dan
3. 4,536 views
1. Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth.a) 16.0 mm b) 26.4 mm c)
1. 9 answers
2. asked by Sandy
3. 4,489 views
Is these answers correct?devoid infuriate jeopardize smug implore intimidate sibling sneer introvert vivacious 1-2. The people I
1. 3 answers
2. asked by Fred
3. 4,383 views
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone
1. 2 answers
2. asked by Dee
3. 4,218 views
The triprotic acid H3A has ionization constants of Ka1 = 6.8× 10–3, Ka2 = 8.1× 10–9, and Ka3 = 5.0× 10–12. Calculate
1. 4 answers
2. asked by Nancy
3. 4,018 views
Calculate the pH at the equivalence point for the titration of 0.160 M methylamine (CH3NH2) with 0.160 M HCl. The Kb of
1. 5 answers
2. asked by Sam
3. 3,526 views
Is these answers correct?condone, pathetic, feign, precedent, comtemplate gape furtive feasible, fiscal, punitive 1-2. "Would it
1. 3 answers
2. asked by Fred
3. 3,430 views
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 7.22?
1. 1 answer
2. asked by Nancy
3. 3,230 views
A room measures 12 feet by 12 feet. A couch is 10 feet and 6 inches long. If you center the couch in the middle of the room, how
1. 10 answers
2. asked by Hannah Adcock
3. 3,113 views
How long is a rectangular strip of land with a width of 5/4 km and an area of 3/4 square km ?
1. 6 answers
2. asked by john
3. 2,877 views
When the concentration of CH3Br and NaOH are both 0.150M, the rate of the reaction is 0.0020M/S.(a) What is the rate of the
1. 3 answers
2. asked by dj
3. 2,717 views
Martha drops a 1 kg rock off the top of Black Oak Canyon which is 100m deep. What is the KE of the rock the instantbefore it
1. 2 answers
2. asked by POTENTIAL & KINETIC ENERGY PRACTICE
3. 2,687 views
1) If m1 = 37°, what is the measure of 4?a. 53° b. 43° c. 37° d. 27° 2) If m1 = 40°, what is the measure of 5? a. 50° b.
1. 2 answers
2. asked by Alexa
3. 2,637 views
rectangular prism with a volume of 72 cubic inches; sum of the 3 lengths is 13; width is half of the height; the length is one
1. 4 answers
2. asked by jennifer
3. 2,590 views
Money is invested in a savings account at 3.4% simple interest. After 1 year, there is $1695.76 in the account. How much was
1. 1 answer
2. asked by Cathy
3. 2,349 views
identify the reducing and the oxidizing agent for each reaction:a) 2na + br2 = 2nabr b) h2 + cl2 = 2hcl c) 2li + f2 = 2lif d) s
1. 2 answers
2. asked by mfsl123
3. 2,329 views
2Al(s)+3Cl2 = 2AlCl3Limiting Reactant is Cl with 0.329mol. What is the maximum mass of aluminum chloride that can be formed when
1. 1 answer
2. asked by Veronica
3. 2,310 views
Un amigo te pregunta quiénes están haciendo varios trabajos. Responde sus preguntas con frases completas.1. ¿Quién saca
1. 2 answers
2. asked by Brianna
3. 2,159 views
ind the radius of a sphere with a surface area of 804 cm2
1. 3 answers
2. asked by Abbey
3. 2,145 views
The perimeter of a quilt had to be 34 feet because he only had that much binding. If he wanted it to be 8ft long what would its
1. 9 answers
2. asked by Trent
3. 2,118 views
What association would you expect if graphing number of hours worked and money earned?A.negative B.linear C.nonlinear D.none of
1. 1 answer
2. asked by cassie
3. 2,082 views
Comment on the relative acidities of h3po4 and the h2po4 ion?I don't understand what this question is asking? Would H3PO4 is a
1. 2 answers
2. asked by Todd
3. 2,006 views
A ball is thrown horizontally from a cliff at a speed of 15 m/s and strikes the ground 45 meters from the base of the cliff. How
1. 1 answer
2. asked by Unknown
3. 2,005 views
Find the largest four digit number which has a total of exactly 3 factors. Assuming that 1 and the number itself are factors
1. 2 answers
2. asked by me
3. 1,994 views
Complete the sentences with the correct form of ir.todos Los Dias, yo ____ a la escuela
1. 2 answers
2. asked by Jade
3. 1,920 views
Trent earned $28,500 last year. He paid $8,265 for rent. What percent of his earnings did Trent pay for rent
1. 2 answers
2. asked by joseph
3. 1,809 views
Un amigo te pregunta quiénes están haciendo varios trabajos. Responde sus preguntas con frases completas.1. ¿Quién saca
1. 3 answers
2. asked by Brianna
3. 1,800 views
What is a personification expression for hands on a clock?
1. 5 answers
2. asked by josh
3. 1,774 views
In what ways was racism common in both the North and the South?
1. 4 answers
2. asked by Victoria
3. 1,773 views
What is the maximum mass of aluminum chloride that can be formed when reacting 30.0g of aluminum with 35.0g of chlorine
1. 1 answer
2. asked by Veronica
3. 1,747 views
1. Find the area of the region bounded by the curves and lines y=e^x sin e^x, x=0, y=0, and the curve's first positive
1. 1 answer
2. asked by Jessy152
3. 1,689 views
Can someone please help me..find an equation that models the path of a satelite if its path is a hyperbola, a=55,000km and
1. 1 answer
2. asked by lee
3. 1,649 views
Let f be the function given by f(x)=(x^3)/4 - (x^2)/3 - x/2 + 3cosx. Let R be the shaded region in the second quadrant bounded
1. 1 answer
2. asked by Jessy152
3. 1,647 views
Calculate the mass of HONH2 required to dissolve in enough water to make 255.5 mL of solution having a pH of 10.02 (Kb =
1. 2 answers
2. asked by Margaret
3. 1,631 views
Consider the titration of 25.0mL of 0.10M HAc with 0.10M NaOH. That is, NaOH is added to HAc. (a)pH at the beginning of
1. 2 answers
2. asked by Layla
3. 1,630 views
Train A starts at 4 miles South of a bridge and heads North at a constant speed of 30 miles per hour. Train B starts 6 miles
1. 2 answers
2. asked by Dan
3. 1,564 views
q = 1400e^(−0.03p)(a) Write revenue, R, as a function of price. R(p) = (b) Find the marginal revenue. R′(p) =
1. 1 answer
2. asked by calc
3. 1,549 views
If a neutral element has 8 neutrons and 7 electrons, which expression correctly identifies the element?
1. 1 answer
2. asked by jj
3. 1,541 views
The National Institute of Science and Technology (NIST) kinetics database lists the rate constant, k, of a particular gaseous
1. 1 answer
2. asked by Ann
3. 1,534 views
a 3000 pound car is parked on a hill at an angle of elevation of 16 degrees. how much force must the brakes exert to keep the
1. 1 answer
2. asked by bob
3. 1,528 views
There are two conducting concentric hollow spheres of outer radii R2 and R1 ( R2>R1 ). The thickness of the material of both
1. 0 answers
2. asked by Anonymous
3. 1,503 views
I have no idea what the answers are to these. Thank YouFor questions 10-14, match the family members: A. el hijo de mis tíos B.
1. 5 answers
2. asked by Jack
3. 1,473 views
Please help. Thank YouWhich is the best answer for this question? ¿Cuántos años tiene Jaime? A.) Tienes quince años. B.)
1. 5 answers
2. asked by sarah
3. 1,456 views
Express your answers as integers separated by commas.
1. 1 answer
2. asked by Anonymous
3. 1,453 views
If a student attempts to identify an unknown compound by methodused in this experiment. She finds that when she heated a
1. 0 answers
2. asked by johnson
3. 1,365 views
a group of 100 students took a quiz. Their average score was 76 points. If the average score for boys was 80 points and the
1. 0 answers
2. asked by Sam
3. 1,352 views
Hydrogen cyanide is used in the production of cyanimid fertilisers. It is produced by thefollowing reaction: 2CH4 + 2NH3 + 3O2
1. 1 answer
2. asked by alex
3. 1,348 views
Write a opinion paper on the most significant consequences of the Agricultural Revolution. The one about 10,000 years ago.I need
1. 2 answers
2. asked by Unknown
3. 1,344 views
what is the probability of drawing 5 queens from a standard deck of cards?
1. 3 answers
2. asked by mary
3. 1,333 views
A professional employee in a large corporation receives an average of = 45 e-mails per day. Most of these e-mails are from other
1. 0 answers
2. asked by Anonymous
3. 1,304 views
Can someone please help...a hyperbola has vertices (+-5,0) and one focus (6,0) what is the standard form equation of the
1. 1 answer
2. asked by lee
3. 1,289 views
Show the predominant form of the amino acid tyrosine at pH=13.9 and ph=7.8. Be sure to include the proper number of hydrogens on
1. 1 answer
2. asked by Sam
3. 1,282 views
High-speed stroboscopic photographs showthat the head of a 197 g golf club is traveling at 36.8 m/s just before it strikes a
1. 1 answer
2. asked by dallas
3. 1,282 views
What were the two ways that the North and the South differed by the mid-1800's?My answer: The North had a rapidly growing
1. 3 answers
2. asked by Victoria
3. 1,242 views
what are topic sentences and transitions? please tell me and let me know and if you can help me i thank you very much bye oh and
1. 5 answers
2. asked by juju
3. 1,241 views
Which of the following did not influence greek mythology?a. the kingdom of Minos b. knowledge of Egyptian mythology c. Roman
1. 2 answers
2. asked by Johnny
3. 1,226 views
: how much work is done by 0.020 meters squared of gas if its pressure increases by 2.0 multiplied by 10 to the 5th power Pa and
1. 0 answers
2. asked by Chad
3. 1,192 views
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of
1. 2 answers
2. asked by K
3. 1,189 views
Isoamyl salicylate (м = 208.25 g/mol) has a pleasant aroma and is used in perfumes and soaps. Which of the following
1. 1 answer
2. asked by Dee
3. 1,175 views
The blackberry cobbler recipe makes 8 equal servings. Nina, Jack, and Cameron each ate 1/4 of the servings. How many servings of
1. 4 answers
2. asked by Bianca
3. 1,172 views
Considering the following precip reactionPb(NO3)2(aq)+2KI(aq)----->PbI2(s)+2KNO3(aq) What is the correct net ionic equation? I
1. 0 answers
2. asked by STAT
3. 1,168 views
what mass of ammonium chloride is dissolved in 100 grams water in each of the following solutions in 1.10 molal NH4Cl solution,
1. 1 answer
2. asked by andrea
3. 1,117 views
The functions f and g are given by f(x)=√x and g(x)=6-x. Let R be the region bounded by the x-axis and the graphs of f and g,
1. 0 answers
2. asked by Jessy152
3. 1,090 views
What even number has a 7 in the hundreds place, and odd number in the thousands place ?
1. 3 answers
2. asked by Kyla
3. 1,083 views
Calculate the annual holding cost if the economic order quantity is used
1. 0 answers
2. asked by Anonymous
3. 1,078 views
Put in ascending order..1/4.28% 3/100
1. 1 answer
2. asked by amy
3. 1,068 views
I have o.236 g for urea and 0.235g for NaCl.And the question is On a gram basis, which is more effective in depressing the
1. 8 answers
2. asked by K
3. 1,061 views
during the preparation of synthetic banana oil lab. Calculate the amount of isopentyl acetate that should be present in the
1. 0 answers
2. asked by Jazzmine
3. 1,057 views
Do NOT put requests for answers to tests on this message board. Doing so again will get you banned for sure.
1. 0 answers
2. asked by Writeacher
3. 1,028 views
one to increased costs the labour charge of a certain establishment from $1.20 to $1.40 per hour .what is the percentage
1. 1 answer
2. asked by BAROTSELAND NETWORK
3. 1,026 views
what is the empirical formula for a compund with 26.2 g N, 7.5 g H, and 66.3 g Cl?
1. 1 answer
2. asked by Anonymous
3. 1,025 views
Gravel is being dumped from a conveyor belt at a rate of 40 cubic feet per minute. It forms a pile in the shape of a right
1. 1 answer
2. asked by jeremy
3. 1,020 views
a rule of thumb used by car dealers is that the trade in value of a car decreases by 20% of its value each year. suppose the
1. 2 answers
2. asked by Anonymous
3. 1,006 views
of the 11 girls in class:6 dislike Trevor(T), 5 Dislike Bryce(B), 8 Dislike Drake(D), 3 Dislike T and B, 5 Dislike T and D, 4
1. 0 answers
2. asked by Josh
3. 1,004 views
Driver A had been leading archrival B for a while by a steady 3 miles. Only 2 miles from the finish, driver A ran out of gas and
1. 0 answers
2. asked by deq
3. 1,000 views
What volume of 1.60 M SrCL2 is needed to prepare 525 ml of 5.00mM SrCl2?
1. 1 answer
2. asked by Candace
3. 1,000 views
Construct a rhombus ABCD in which AB= 6 cm and angle ABC= 60degree. Divide it into two triangle ABC and ADC. Construct a
1. 1 answer
2. asked by Anonymous
3. 992 views
find volume in cubic feet of right rectangular prism 3 1/2ft, 8 ft, 2 3/8
1. 1 answer
2. asked by Jada
3. 987 views
At a certain instant, a ball is thrown downward with a velocity of 8.0 m/s from a height of 40 m. At the same instant, another
1. 0 answers
2. asked by Dan
3. 985 views
There is a very large horizontal conducting plate in the x-y plane (consider it infinitely large). Its thickness is h . The
1. 0 answers
2. asked by Anonymous
3. 985 views
1. When considering marital separation and divorce as a social problem, an effective approach might be to:__x_a. develop
1. 0 answers
2. asked by Suzy
3. 980 views
what is the difference between weathering and erosion???
1. 3 answers
2. asked by Laruen
3. 964 views
Which of the following best describes the persuasive appeal used in the sentence “Once you’ve cared for a loving animal, you
1. 4 answers
2. asked by KittyKitKatKoo
3. 954 views
Describe and explain how each of the following experimental errors or variations might affect your results.(a) You forgot to add
1. 2 answers
2. asked by Jazzmine
3. 952 views
A pitcher throws a baseball with a horizontal velocity of 132 ft/s (90 mph) toward home plate that is approximately 60 ft. away.
1. 1 answer
2. asked by Dan
3. 950 views
the vertice of rectangle ABCD are A=(0,0), B=(2a,0), C=(2a,2b) and D=(0,2b). Where M,N,P and Q are the midpoint of the
1. 1 answer
2. asked by Johnny
3. 942 views
Find a and b greater than zero such that a^2 = b^3
1. 1 answer
2. asked by me
3. 941 views
A ball is dropped from a height of 5.67 m. If the ball rebounds with a speed of 4.22 m/s, what is the coefficient of
1. 1 answer
2. asked by Kaci
3. 938 views
calculate the energy in joules lost when 70.0 grams of water cools from 86.4 celsius to 7.1 celsius
1. 1 answer
2. asked by anon
3. 936 views
A freestyle skier hits the take off ramp with an initial velocity of 17.5 m/s with a purely vertical take off (90 degrees). What
1. 1 answer
2. asked by Caitlyn
3. 932 views
An 67.6 kg object moving to the right at38.7 cm/s overtakes and collides elastically with a second 48.9 kg object moving in the
1. 0 answers
2. asked by colby
3. 928 views
I can't draw the shape here, but the picture is of a 3-sided pyramid. One side of the base is 10", another side of the base is
1. 1 answer
2. asked by Sylvia
3. 925 views
Calculate the theoretical yield (g) of precipitate formed when 10.0 mL of 0.50 M magnesium nitrate is added to 5.0 mL of 0.50 M
1. 1 answer
2. asked by Joe
3. 923 views

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