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Morgan

Questions and answers by visitors named Morgan

Questions (557)

Which reaction shows that the enthalpy of formation of CS2 is Hf = 89.4 kJ/mol?A. C(s) + 2S(s) CS2(l) + 89.4 kJ B. C(s) + 2S(s)
1. 5 answers
2. 7,173 views
Of 10 girls in a class, 3 have blue eyes. If two girls are chosen at random, what is the probability that (i) both have blue
1. 5 answers
2. 4,070 views
An object A has half the mass and twice the velocity of object B. How are the kinetic energies of A and B related?A. The kinetic
1. 6 answers
2. 3,466 views
If the internal energy of an object remains constant, which of the following statements is true regarding the object's potential
1. 4 answers
2. 1,443 views
Why is the process of examining enthalpies of a reaction helpful?A. It helps in determining how a reaction occurs spontaneously.
1. 2 answers
2. 1,026 views
The ?H of the reaction below is -575.13 kJ. Is this reaction spontaneous?2ZnS + 3O2 + C ? 2SO2 + 2Zn + CO2 A. It is not because
1. 5 answers
2. 1,955 views
Which electron would have the highest ionization energy for an oxygen atom?A. 2nd B. 1st C. 5th D. 6th If it is the highest I
1. 5 answers
2. 2,238 views
you are dinning at a restaurant in Argentina at 9:30 n the evening.(Dinner) What meal are you most likely eating?A) el almuerzo
1. 32 answers
2. asked by Morgan
3. 9,121 views
Ammonia (NH3) boils at -33oC; at this temperature it has a density of 0.81 g/cm3. The enthalpy of formation of NH3(g) is
1. 3 answers
2. 1,993 views
A carbonate ion, CO32−, can participate in an acid-base reaction. How should the carbonate ion be classified?
1. 4 answers
2. 2,170 views
The following galvanic cell at standard conditions has a potential of 0.03 V:Ag+(aq) + Fe2+(aq) → Fe3+(aq) + Ag(s). What would
1. 5 answers
2. 2,393 views
What is ΔH in the equation ΔG = ΔH - TΔS?A. The change in specific heat between the products and the reactants B. The change
1. 6 answers
2. 3,762 views
Why is it important in gravimetric analysis to add an excess amount of precipitating ions to a solution containing an analyte
1. 4 answers
2. 1,024 views
What is the entropy change associated with the chemical reaction that occurs when iron oxide is converted to its metal form?Fe2O
1. 7 answers
2. asked by Morgan
3. 3,535 views
What does the photoelectric effect show about the connection between light and electrons?A. Light can remove electrons from
1. 4 answers
2. 1,853 views
Which of the following spectroscopies is/are suitable for studying materials on surfaces?A. IR and UV/V B. UV/V C. NMR D. XPS
1. 4 answers
2. 1,986 views
Which of the following affects how strongly anions and cations are attracted to each other in a solid?A. The nucleus B. Empty
1. 4 answers
2. 2,544 views
Which of the following elements can be detected by XPS?A. Hydrogen and lithium B. Boron and helium C. Lithium and boron I think
1. 4 answers
2. 1,596 views
How can the atomic orbital be described in the quantum mechanical wave model of the orbitals?A. A collection of balloons B. A
1. 7 answers
2. 1,630 views
The figure shows a cube of air at pressure 1.0 atm above a hot surface on Earth. Contact with the hot surface causes the volume
1. 5 answers
2. 3,099 views
A particular photon has a wavelength of approximately 2 x 10-7m. What is the energy, in joules, associated with this photon?A.
1. 7 answers
2. 2,082 views
what is the VSEPR of NF4+
1. 4 answers
2. 2,184 views
A plane leaves Seattle, flies 79.0 at 22.0 north of east, and then changes direction to 48.0 south of east. After flying at 123
1. 4 answers
2. 1,435 views
A rock is thrown vertically upward with a speed of 12.0 from the roof of a building that is 40.0 above the ground. Assume free
1. 1 answer
2. 1,135 views
Starting from rest, a boulder rolls down a hill with constant acceleration and travels 3.00 during the first second.How far does
1. 4 answers
2. 2,699 views
A dock worker applies a constant horizontal force of 77.0 to a block of ice on a smooth horizontal floor. The frictional force
1. 1 answer
2. 523 views
How do precipitates combine in a solution?Very slowly, if at all. Chemical reactions require that atoms/ions contact each other
1. 1 answer
2. 334 views
What formula do I need to use to find the missing length of right triangles? Please help.a^2 + b^2 = c^2
1. 1 answer
2. 380 views
What object in the solar system has a composition similar to that of the gas giants?Well, it is definitely NOT the Sun. The
1. 1 answer
2. 828 views
Can you tell me specifically about the fuctions of all of the squid's body parts and organs?
1. 1 answer
2. 378 views
What is the buccal mass, and why is the beak inside of it?Buccal mass - Muscular bulb at the beginning of the digestive system
1. 1 answer
2. 365 views
Why do squids need to have three separate hearts?Since this is not my area of expertise, I searched Google under the key words
1. 1 answer
2. 586 views
i need to answer these essaysany information will be helpful!!! Change Over Time choose TWO areas listed below and analyze how
1. 1 answer
2. 1,149 views
I have to do 20 analogies every week for spelling homework. They are hard to do sometimes. I only have 2 more and if you could
1. 1 answer
2. 518 views
Why does Jupiter spin?
1. 1 answer
2. 313 views
I am making a poster on the cold war. I wanted to make the background look like cracked ice, like on a lake. I thought I could
1. 1 answer
2. 427 views
90% of adults drink milk.A sample of adults in an area was taken. 657 of 750 drink milk. Do these responses provide strong
1. 3 answers
2. 433 views
List 3 examples of alliteration found in Beowulf.
1. 2 answers
2. 1,120 views
List 3 examples of Kennings found in Beowulf.
1. 2 answers
2. 557 views
Finding the volume of a cone:3.14x7x7x14=2154.04 What's the next step? I can't remember to do it?
1. 3 answers
2. 458 views
What are the subject and object pronons?
1. 2 answers
2. 486 views
-> OB bisects <AOCm<AOB=6x, m<AOC=2x+2y, m<BOC=y+5
1. 3 answers
2. 2,289 views
What was Jefferson's and Jackson's stance on the Warren Brdge v. Charles River Bridge case?
1. 2 answers
2. 896 views
what is the significance of the FAIR as in Iowa and Proposition 187 in Clifornia?
1. 1 answer
2. 365 views
i am in 9th grade biology and i am REALLY confused about the difference between controll variable, responding variable,
1. 1 answer
2. 743 views
what's the answer to .5x-y=8
1. 1 answer
2. 285 views
5000g= ______kg
1. 1 answer
2. 271 views
1. German Italy formed an alliance in 1936 known as the Axis Powers. How did this alliance affect the outcome of the Spanish
1. 2 answers
2. 735 views
Which metal will only be found in nature combined with other elements?1. gold 2. silver 3. platinum 4. lithium Thanks, Morgan
1. 1 answer
2. 463 views
I am trying to find out which one of these elements would not be reactive at all. The thing is, reactivity series only include
1. 1 answer
2. 498 views
Is it true that Iceland has designated "enchantment sites?" Where are these located? How can I find out about them? Thanks
1. 1 answer
2. 419 views
Has anyone read the book the long winter by laura ingalls wilder? We have to find the theme. I'm not sure the theme of this
1. 1 answer
2. 439 views
What were the relations between the English settlers and the Indians of the southern Atlantic coast?
1. 1 answer
2. 409 views
I need to do a current event for social, a current event is where you have to wright a paper on something big that's going on in
1. 3 answers
2. 544 views
Thanks MS.Sue
1. 1 answer
2. 270 views
WHO R U MS.SUE?
1. 3 answers
2. 292 views
Differentiate this.x^2 - sqrt(3)xy + 2y^2 = 5 Can someone show me?
1. 2 answers
2. 923 views
What are collective nouns?
1. 1 answer
2. 362 views
Does anyone know of a website that translates english into the shakespearean language? I can only find websites that translate
1. 1 answer
2. 757 views
Here is a question on my science worksheet, "if a projectile's fall matches Earth's 'BLANK', the projectile will not hit earth."
1. 4 answers
2. 450 views
could you please answer my question? I need to go read my book. my mom is getting upset! i an sorry, i don't mean to be snobby
1. 3 answers
2. 369 views
Okay, I saw this one previously posted, but the answer it kept leading me to was wrong.A sports car of mass 1400kg (including
1. 5 answers
2. 544 views
Hi. I have to make up a short comic for the 13th amendment. Any ideas?
1. 1 answer
2. 360 views
I;m sorry, but I was stuck on the second part of this problem. Can you please help me?An automobile engine slows down from 4500
1. 2 answers
2. 546 views
I;m sorry, but I was stuck on the second part of this problem. Can you please help me?An automobile engine slows down from 4500
1. 4 answers
2. 593 views
Why is sin theta used in the torque formula while the work formula uses cosine theta?
1. 1 answer
2. 350 views
Use differentials (or, equivalently, a linear approximation) to estimate the given number.sqrt100.4
1. 3 answers
2. 556 views
Find the critical numbers of the function.f(x) = x^-2ln(x)
1. 3 answers
2. 1,433 views
we have a speech do and we have to make an outline, so i did. my speech is on music so one of my ?'s on my outline is how many
1. 1 answer
2. 1,109 views
How much work does the electric field do in moving a proton from a point with a potential of +120 V to a point where it is -60
1. 3 answers
2. 1,515 views
How many atoms of 0xygen are there in 8.43 g of KMnO4?Could someone please explain this?
1. 1 answer
2. 387 views
What is the formula of a substance that contains 0.0920 g of C and 0.0180 g of H?This is what I did... Find how many moles of
1. 1 answer
2. 345 views
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 14.8
1. 1 answer
2. 1,071 views
We did a lab. The reaction of zinc and iodine.We put 1 g of zinc with 1 g of iodine.. and used alcohol. Is the equation Zn + I2
1. 2 answers
2. 639 views
Which of the following compounds would result in an exchange reaction if mixed in an aqueous solution with (NH4)2S?a. SrCl2 b.
1. 3 answers
2. 646 views
6p2 is the last one of the electron configuration. I think the element is Pb. How do I know the charge of the element?
1. 3 answers
2. 2,039 views
If you had an IR source in an otherwise dark room, would you be able to influence the nightlight to turn off? What about if you
1. 1 answer
2. 372 views
Time p.m. Mass (g)1:00 2.5754 1:08 2.5621 1:15 2.5615 1:24 2.5609 1:31 ? How do I predict the mass at 1:31 of this solid that is
1. 1 answer
2. 305 views
which has a shorter bond between nitrogens?N20 or N3-
1. 1 answer
2. 299 views
6(x+4)=3x-2
1. 1 answer
2. 243 views
Explain what would happen (and why) to the flavor of eugenol if the aromatic ring was saturated into a cyclohexane.I know the
1. 1 answer
2. 410 views
A table is shaped like a regular hexagon. The length of one side is (2x + 2) in. and the length of another side is (3x − 4)
1. 2 answers
2. 836 views
Use Simpson's Rule with n=10 to estimate the arc length of the curve. Compare your answer with the value of the integral
1. 2 answers
2. 1,053 views
I had a problem that asked what volume of water in gallons would need to be split to store the same amount of energy as found in
1. 2 answers
2. 525 views
I did a lab using an electrochemical cell to establish a relationship between cell potential and concentration. I derived two
1. 1 answer
2. 1,058 views
Que tienes que comprar para el cumpleanos de una pariente?
1. 3 answers
2. 455 views
A baseball player hits a pitch when the ball is 2 feet off the ground. Two hundred feet from the plate, the ball reaches its
1. 4 answers
2. 770 views
write the ratio as a fraction in lowest terms. Include units if any in your answer. 14 feet : 8 sec
1. 2 answers
2. 672 views
how much force is needed to accelerate a 68 kg-skier at a rate of 1.2 m/sec sq
1. 1 answer
2. 448 views
I have a rubber ball.Its diameter is 5.16 cm. Its density is 1.5 Mg/m^3. I need to find its weight in US units. I know to use
1. 1 answer
2. 443 views
Find the volume of the solid generated by revolving the region bounded by the graphs of the equations and/or inequalities about
1. 1 answer
2. 737 views
I have a problem where I need the force exerted by an object onto a scale. The object weighs 22 lbs. What is the force? Do I
1. 1 answer
2. 357 views
If I put 4 of the 10 presents under the Christmas tree, how many combinations of presents can be picked, where 2 of the presents
1. 1 answer
2. 449 views
How far will 490 Joules raise a block weighing 7 N?
1. 7 answers
2. 1,839 views
How far will 490 J raise an 8 kg mass?
1. 5 answers
2. 1,772 views
Calculate the weight of potassium chlorate required to prepare 380 mL of wet oxygen collected over water at 20 degrees C and 750
1. 4 answers
2. 601 views
How much did you invest each month at 6.10% compounded monthly if 10 years later the investment is worth $57,670.12?
1. 1 answer
2. 329 views
Balloon X is filled with the carbon monoxide. Balloon Y is filled to the same volume with carbon dioxide. The balloons are left
1. 4 answers
2. 2,073 views
How to prepare a 0.8% agarose gel with TAE. It does not give the concentration of the TAE so I am not sure how to prepare this
1. 1 answer
2. 418 views
a room is 18 ft long, 14 ft wide, and 8 ft high, then how would i find the cost of carpeting the floor with carpet costing
1. 2 answers
2. 983 views

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