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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. 11,037 views
What is vegetative reproduction?
1. 2 answers
2. asked by Vuyiseka
3. 10,330 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. 3,630 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. 3,597 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. 3,043 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. 2,733 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. 2,358 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. 2,149 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. 1,862 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. 1,755 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. 1,609 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. 1,605 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. 1,601 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. 1,477 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. 1,473 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. 1,385 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. 1,317 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. 1,218 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. 1,198 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. 1,160 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. 1,142 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. 1,116 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. 1,046 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. 1,043 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. 1,035 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. 1,010 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. 965 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. 956 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. 920 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. 907 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. 905 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. 904 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. 864 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. 855 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. 843 views
Express 0.78 .as a fraction a/b where a,b,=integer
1. 2 answers
2. asked by Anonymous
3. 835 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. 829 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. 821 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. 815 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. 808 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. 796 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. 793 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. 789 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. 786 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. 765 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. 764 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. 740 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. 736 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. 728 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. 725 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. 712 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. 710 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. 707 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. 707 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. 691 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. 678 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. 677 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. 672 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. 667 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. 664 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. 660 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. 657 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. 631 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. 627 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. 613 views
Explain the different lineages, clans, moieties, and phratries
1. 3 answers
2. asked by jimmy
3. 612 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. 611 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. 610 views
Where, if any, would you find a working kinship system within the United State
1. 10 answers
2. asked by jimmy
3. 607 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. 602 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. 581 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. 578 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. 567 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. 565 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. 559 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. 556 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. 554 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. 554 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. 553 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. 548 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. 543 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. 527 views
What are the latiudinal positions of the temperature/mid latitude cyclones during january and july?
1. 1 answer
2. asked by Rabelani
3. 526 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. 526 views
What is the enthalpy change when 25 g's of PCl5 are decomposed /\ H= 90
1. 1 answer
2. asked by Anonymous
3. 518 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. 513 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. 508 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. 497 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. 486 views
Differentiate: y = (x^2 + 8x +3)^3
1. 1 answer
2. asked by Wes
3. 486 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. 483 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. 480 views
why the kinship system work?Answer Because it help out the people
1. 2 answers
2. asked by jimmy
3. 478 views
5,280 divided by 9 = is what?
1. 1 answer
2. asked by Anonymous
3. 475 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. 470 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. 465 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. 463 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. 453 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. 452 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. 452 views

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