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Questions Asked on January 31, 2015

In the reaction below, ΔH°f is zero for ___________.Ni(s) + 2CO(g) + 2PF3(g) = Ni(CO)2(PF3)2(l) Ni(s) CO(g) Ni(CO)2(PF3)2(l)
1. 1 answer
2. asked by danny
3. 11,048 views
What is vegetative reproduction?
1. 2 answers
2. asked by Vuyiseka
3. 10,361 views
In humans, the allele for curly hair and the allele for straight hair show incomplete dominance. The offspring of a curly-haired
1. 11 answers
2. asked by Ruby :)
3. 3,641 views
A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer
1. 1 answer
2. asked by Jenny
3. 3,612 views
The enthalpy change for the following reaction is -483.6 kJ:2H2(g) + O2(g) = 2H2O(g) Therefore, the enthalpy change for the
1. 1 answer
2. asked by danny
3. 3,053 views
12. Use the remainder theorem to find P (-2) for P(x) =x^3+2x^2-x-7. Specifically, give the quotient and the remainder for the
1. 2 answers
2. asked by gary
3. 2,745 views
nearest star distance of 4.3 light years proxima centauri is the nearest star to our solar system. what is the distance to
1. 1 answer
2. asked by help plz
3. 2,375 views
A pill weighs 70 mg. 7/9 of the pill is the active ingredient. How many milligrams are in the part of the pill that is not the
1. 5 answers
2. asked by Luis
3. 2,158 views
what is the expression for the area of the shaded region in the diagram in factored form?diagram: (shaded) Large circle have
1. 1 answer
2. asked by Jay
3. 1,875 views
What is the molar mass of pentane if 4.18 �~ 1016 molecules of pentane weigh 5.00 ƒÊg?
1. 1 answer
2. asked by ashley
3. 1,765 views
Congress has delegated the responsibility of setting the rules of practice, procedure and evidence in federal courts to the
1. 1 answer
2. asked by Pat
3. 1,618 views
A 0.97 m aqueous solution of an ionic compound with the formula MX has a freezing point of -2.5 ∘C .
1. 2 answers
2. asked by Brittney
3. 1,616 views
Express the function in the form f o g if g(t)=csc tu(t)= sqrt(csc t) f(t)=?
1. 1 answer
2. asked by Tay B
3. 1,608 views
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
1. 1 answer
2. asked by Anonymous
3. 1,486 views
What mass of solid sodium formate (of MW68.01) must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer
1. 2 answers
2. asked by Anonymous
3. 1,485 views
What is the concentration of hydrogen ionsin a solution containing 0.645 M HOCN (cyanic acid) and 0.235 M (NaOCN) (sodium
1. 2 answers
2. asked by Anonymous
3. 1,397 views
Ali and his father sit at the ends of a see-saw, 2 m from the pivot, as shown in figure 5.12. Where should ali's mother sit in
1. 2 answers
2. asked by Fiesta
3. 1,323 views
a ship sails due north from port 90 km,than 40 km east and then 70 km north, how far is the ship from port
1. 4 answers
2. asked by Dend
3. 1,225 views
The ionization constant of HA is 1 × 10−6. What must be the ratio of [A−] to [HA] for the preparation of a buffer solution
1. 1 answer
2. asked by Anonymous
3. 1,207 views
A rectangular container 45cm long and 25cm wide was full of water. After removing 22.5 liters of the water, the level of water
1. 4 answers
2. asked by kudu
3. 1,171 views
A rectangular plot of land measures 40m by 30m. There is a wall on one of the longer sides. Four strands of wire are to be used
1. 3 answers
2. asked by kudu
3. 1,151 views
A rectangular picture is 3cm longer than its width, (x+3). A frame 1 cm wide is placed around the picture. The area of the frame
1. 1 answer
2. asked by Elias
3. 1,129 views
A clock was set on Monday at 8.30 a.m. On Tuesday, the following day, the clock showed 8.45 p.m. when the correct time was 8.30
1. 1 answer
2. asked by kudu
3. 1,057 views
How can an offspring inherit a recessive trait ?Is it when both parents carry that trait? In the plant shown (plant is an orchid
1. 1 answer
2. asked by Ruby :)
3. 1,055 views
Write 2.445353535353... as a fractionI'm learning integrals right now and this is part of the exercises under it. Is there a
1. 4 answers
2. asked by Alex
3. 1,048 views
Which grouping lists the main reasons for European exploration?A) "God, glory, and gold" B) "Salt, silk, and spices" C) "Rum,
1. 8 answers
2. asked by jam
3. 1,024 views
Compute the maximum and minimum amount of a drug remaining in a patientin the limit (that is, as time tends to infinity) given
1. 1 answer
2. asked by Jona
3. 978 views
When a car makes an emergency stop on dry road, it leaves skid marks. The speed S, in miles per hour, of the car when brakes
1. 3 answers
2. asked by Marcquillia
3. 967 views
"Do we expect too much from public figures?"I wrote an introduction. I agree to the question raised. Please take a look at the
1. 1 answer
2. asked by Sing
3. 933 views
Hi I'm grade10 and I was wondering if you's could helpMe to get a career examples after matric because my school took away our
1. 6 answers
2. asked by Zenande Snyman
3. 918 views
I would like to know if i have used properly structured sentences for the following:49. To succeed in the new economy, workers
1. 3 answers
2. asked by Frank
3. 916 views
Three point charge are located at a line 20cm with charge q1= -3uC, q2= +4uC, q3= -7uC. Determine the magnitude of the force.
1. 1 answer
2. asked by ama
3. 914 views
Please help me to solve this....The average of two numbers is 81. The difference between the number is 26. What is the smaller
1. 2 answers
2. asked by Sarah JJ
3. 869 views
In every culture, cultural constructs will be found. What are the cultural constructs found in the U.S., and how are they used
1. 5 answers
2. asked by jimmy
3. 867 views
The number of women passengers in a bus was X. The number of children in the bus was three times that of men passengers but was
1. 2 answers
2. asked by kudu
3. 854 views
Express 0.78 .as a fraction a/b where a,b,=integer
1. 2 answers
2. asked by Anonymous
3. 845 views
The power of a court to resolve a dispute:A. Jurisdiction B. Territory C. Indirect control D. Discretion Is it A?
1. 1 answer
2. asked by Pat
3. 835 views
A buffer solution is made by dissolving 0.45moles of a weak acid (HA) and 0.23 moles of KOH into 720 mL of solution. What is the
1. 0 answers
2. asked by Anonymous
3. 835 views
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 68.5 N, Jill pulls with 61.3 N in the
1. 1 answer
2. asked by Jordan
3. 826 views
Hello, I really need help on these two homework problem. ><In problem #1, I believe it is related to the exponential functions
1. 3 answers
2. asked by Aria
3. 819 views
compare and contrast what the authors identify as 21st century skills with what you would identify 21st century skills
1. 1 answer
2. asked by Fay
3. 808 views
Ali and hid father sit at the ends of a see-saw, 2 m from the pivot, as shown in figure 5.12. Where should ali's mother sit in
1. 2 answers
2. asked by Fiesta
3. 801 views
if the lengths of the sides of one triangle are 2 inches 5 inches and 7 inches respectively in the shortest leg of a similar
1. 2 answers
2. asked by keyna
3. 800 views
Describe how the Triassic period was a transitional time period during the Mesozoicera. Explain why the boundary between t he
1. 0 answers
2. asked by Khary
3. 794 views
3. Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples
1. 3 answers
2. asked by jimmy
3. 776 views
Describe the distinct differences between lineages, clans, moieties, and phratries are all types of decent groups.Lineage is a
1. 1 answer
2. asked by jimmy
3. 773 views
which following trinomial is a perfect square?A. x^2 + 2x - 3 B. x^2 - 4x - 4 C. x^2 + x + 1/4 D. x^2 - x -56 question B & C
1. 1 answer
2. asked by IVY
3. 747 views
Suppose that all the tangent lines of a regular plane curve pass through some ﬁxed point. Prove that the curve is part of a
1. 1 answer
2. asked by thida
3. 745 views
Please can anyone explain. Thank you.A rocket is launched vertically from ground with a constant acceleration. If the rocket
1. 1 answer
2. asked by ANA
3. 741 views
The Spanish, French, and English all explored America and left a lasting mark on the New World�s development. Compare and
1. 4 answers
2. asked by Hope
3. 736 views
A flagpole 12.5m high stands at the top of a bldg. From a pt. P on the street the angle of elevation of the top of the pole is
1. 7 answers
2. asked by Why?
3. 721 views
on a map, the key indicates that 2.5 centimeters equals 10 miles. a road on the map runs for 30 centimeters. how long is the
1. 2 answers
2. asked by jorge
3. 721 views
The following contingency of frequencies is based on a 5-year study of fire fatalities in Maryland. For purposes of clarity,
1. 1 answer
2. asked by jess
3. 716 views
The volume, V cm3 , of a cone height h ispi x h^3 / 12 If h increases at a constant rate of 0.2 cm/sec and the initial height is
1. 1 answer
2. asked by Akki
3. 714 views
A rocket is launched vertically from ground with a constant acceleration. If the rocket emits a burst of sound every five
1. 0 answers
2. asked by ANA
3. 703 views
The radiator in your car uses either water or ethylene glycol (anti-freeze) to remove heat from the engine and dissipate it to
1. 1 answer
2. asked by danny
3. 688 views
The space shuttle is in a 3e+5 m high orbit over the earth. The radius of the earth is 6.37e+6 m, the mass of the earth is
1. 1 answer
2. asked by Carly
3. 687 views
A bullet traveling horizontally at a speed of 350m/s hits a board perpendicular to its surface, passes through and emerges on
1. 2 answers
2. asked by Arneisha
3. 681 views
Describe significant events in the social and economic reconstruction of the South. Why are these events significant?
1. 4 answers
2. asked by Christina
3. 678 views
one out of 42 high school ball players plays college ball. one out of 47 college players plays professional ball. what fraction
1. 1 answer
2. asked by Anonymous
3. 673 views
A buffer solution is made by dissolving 0.45moles of a weak acid (HA) and 0.23 moles of KOH into 720 mL of solution. What is the
1. 0 answers
2. asked by Anonymous
3. 670 views
Samuel, Elis and David sell newspapers. One day David sold 20 newspapers more than Elis who sold 10 newspapers more than Samuel.
1. 2 answers
2. asked by kudu
3. 669 views
Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for
1. 4 answers
2. asked by jimmy
3. 646 views
ANemployee is paid a base salary of $2,150 a month plus an 8% commission on all sales over $7,000 during the month. How much
1. 2 answers
2. asked by Chuck
3. 641 views
The quadratic equation 2qx(x+1)-8x^2-1, where q is a constant, has no real roots. Find the range of values of q.Answer given is
1. 4 answers
2. asked by Sha
3. 628 views
I would like to know if i have used the correct grammar and punctuation in the following two sentences:47. "Have you ever read
1. 1 answer
2. asked by Frank
3. 620 views
In a group of 126 spectators the ratio of men to women was 3:4. What is the new ratio if 2 more men and 8 more women joined the
1. 1 answer
2. asked by kudu
3. 618 views
Where, if any, would you find a working kinship system within the United State
1. 10 answers
2. asked by jimmy
3. 618 views
Explain the different lineages, clans, moieties, and phratries
1. 3 answers
2. asked by jimmy
3. 616 views
which conditions characterize a high-pressure area?1. low density, low humidity 2. high density, high humidity 3. high density,
1. 3 answers
2. asked by Anonymous
3. 611 views
at a boutique, an evening gown is marked at a profit of 40% on the cost price. it is sold in a sale at 20% discount.a. Find the
1. 1 answer
2. asked by Sayaka
3. 595 views
please can you explain this to me I don't understand!Find the value of the following 10! 11! over 7! 13! If your answer is not
1. 1 answer
2. asked by mary ann
3. 582 views
Two observers on opposite sides are 350m apart and are looking at a balloon if the angles of elevation from each observer are
1. 2 answers
2. asked by Dend
3. 575 views
Determine the interval(s) at which f(x) is concave up given that f′′(x)=−x2+x+6.Critical points are: -2 & 3
1. 1 answer
2. asked by joshua
3. 569 views
The following contingency of frequencies is based on a 5-year study of fire fatalities in Maryland. For purposes of clarity,
1. 0 answers
2. asked by jcukane
3. 567 views
geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a
1. 3 answers
2. asked by Anonymous
3. 563 views
Two point charges Q1=-6.80nC and Q2 = -5.80nC are separated by 33.0cm. What is potential energy of the pair? Answer in units of
1. 0 answers
2. asked by Emily
3. 562 views
Is this right answers for1.Describe the distinct differences between lineages, clans, moieties, and phratries.Unilineal descent
1. 1 answer
2. asked by jimmy
3. 561 views
What is the specific heat capacity of ethanol (C 2H 6O) if a 18.3 g sample increased 12.3 C upon the addition of 553.0 J? The
1. 1 answer
2. asked by danny
3. 561 views
what differences between the United States and a Pastoralist society?My answer Both of these societies had a more complex social
1. 1 answer
2. asked by jimmy
3. 555 views
John and David had packets of tea to be packed into cartons. Each carton holds 46 packets. John packed 63 cartons and remained
1. 1 answer
2. asked by kudu
3. 550 views
Marriage patterns vary by culture themselves. In some cultures, such as in Saudi Arabia, the practice of plural marriage is
1. 1 answer
2. asked by jimmy
3. 536 views
What are the latiudinal positions of the temperature/mid latitude cyclones during january and july?
1. 1 answer
2. asked by Rabelani
3. 535 views
Compare and contrast the experiences of the Creeks and Cherokees in Georgia following the War of 1812
1. 1 answer
2. asked by Christina
3. 535 views
What is the enthalpy change when 25 g's of PCl5 are decomposed /\ H= 90
1. 1 answer
2. asked by Anonymous
3. 526 views
Hi!I was just wondering if one of the teachers could tell me whether or not it is unprofessional to wear colored contact lenses
1. 1 answer
2. asked by Mary
3. 523 views
IF 121a^2b^2 + kab + 4b^2 is a perfect square trinomial, then the positive value of k must be ________.my work: 121a^2b^2 = 11ab
1. 2 answers
2. asked by GD
3. 513 views
A cubic foot of water weighs 62.4 lb. A basketball has a radius of 0.39 ft. How much would the basketball weigh if it was filled
1. 1 answer
2. asked by John
3. 504 views
Differentiate: y = (x^2 + 8x +3)^3
1. 1 answer
2. asked by Wes
3. 496 views
A classroom of n = 10 children has a mean score of 17.200 on a measure of hyperactivity. One new child is added to the class,
1. 2 answers
2. asked by Luis
3. 494 views
What is the central theme of the “As Cheap as Coal” portion in Section 8.1 of your text? (Points : 1)
1. 1 answer
2. asked by Ashley
3. 491 views
The average of two numbers is 81. The difference between the number is 26. What is the smaller number?
1. 2 answers
2. asked by Sarah JJ
3. 486 views
why the kinship system work?Answer Because it help out the people
1. 2 answers
2. asked by jimmy
3. 484 views
5,280 divided by 9 = is what?
1. 1 answer
2. asked by Anonymous
3. 480 views
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
1. 2 answers
2. asked by Anonymous
3. 479 views
Can someone help me with this problem?Determine the number of positive integers less than 10,000 that can be formed from the
1. 2 answers
2. asked by Anonymous
3. 473 views
Determine the interval(s) at which f(x) is concave up given that f′′(x)=−x2+x+6.a) (–2, 3) b) (–∞, –2), (3, ∞)
1. 1 answer
2. asked by joshua
3. 471 views
How many rams of 96.5% pure NaOH pellets do you need to make 1 liter of 1.5 N NaOH?
1. 1 answer
2. asked by Gordon
3. 463 views
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
1. 1 answer
2. asked by Anonymous
3. 461 views
Its a request:(answer sincerely and think like you're in a pageant)If you were crowned tonight, what can you contribute to heal
1. 2 answers
2. asked by cyrille
3. 456 views

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