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Questions Asked on November 15, 2014

What is the authors main purpose in "Why Leaves Turn Color in the Fall"?A. She wants to persuade readers to stop pollution. B.
1. 43 answers
2. asked by blue
3. 11,193 views
How many electrons can be described by the quantum numbers n = 2, l = 1, ml = -1?a.) 2 b.) 14 c.) 6 d.) 10 e.) 0 I thought it
1. 3 answers
2. asked by Annie
3. 8,453 views
Which of the following would likely be part of an ionic bond? Choose two that would apply.A.K+1 B.Cl2 C.F-1 D.Ne Are the answers
1. 14 answers
2. asked by blue
3. 5,670 views
The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic
1. 2 answers
2. asked by julie
3. 5,448 views
Which of the following is true about the atom shown Choose two that apply.The picture shows one big red one in the middle with
1. 11 answers
2. asked by Callie
3. 5,403 views
Which chemical equation shows that no atoms are lost during a chemical reaction?A. 8Fe+s8-->Fe5 B. 8Fe+8S8--> 8FeS C.
1. 15 answers
2. asked by Callie
3. 4,764 views
Which sentence is a main idea of "Why Leaves Turn Color in the Fall"?A. Leaves stop making chlorophyll add summer ends. B.
1. 11 answers
2. asked by blue
3. 4,320 views
A student made a list of reactions:Fireworks exploding Paper burning Cellular respiration How should the student title his or
1. 33 answers
2. asked by Callie
3. 4,218 views
Which sequence of processes must occur for an atom of carbon to go from a human to a car?A. Respiration, photosynthesis,
1. 22 answers
2. asked by Callie
3. 3,685 views
N2O5 is an unstable gas that decomposes according to the following reaction:2N2O3(g) ---> 4NO2(g) + O2(g) What would be the
1. 2 answers
2. asked by Aaqib Zaman
3. 3,586 views
Lisa studied the models of three carbon nuclei shown below.She listed information about the carbon nuclei in a table. Name
1. 12 answers
2. asked by Callie
3. 3,404 views
The arrows in the image show the direction in which carbon is moving. Which proces of the carbon cycle is indicated?The picture
1. 6 answers
2. asked by Callie
3. 3,115 views
Darion needs 20 pieces of string 3/8 inch in length. He cut a 4 7/8 inch piece of string into pieces that are 3/8 of an inch
1. 7 answers
2. asked by Matthew
3. 3,108 views
Assuming 100% dissociation, calculate the freezing point and boiling point of 0.700 mol of AgNO3 in 1.00 kg of water.
1. 1 answer
2. asked by Anonymous
3. 2,990 views
Johhny left a glass of milk on his bedside table for a week, and it spoiled. At the end of the week, the glass contained a
1. 19 answers
2. asked by Callie
3. 2,942 views
a total of 400 tickets were sold for the school play, they were either adult tickets or student tickets. there were 50 fewer
1. 4 answers
2. asked by denise
3. 2,866 views
is it reasonable to expect that these models will change again in time? Explain.Like the bohr diagram and etc;
1. 3 answers
2. asked by Laura
3. 2,786 views
A 1.50 X 10^2g piece of brass(specific heat capacity 3.80 X 10^2 J(kgC) is submerged in 400 mL of water at 27.7 Degrees Celsius.
1. 5 answers
2. asked by Rosie
3. 2,754 views
In a class of 50 students, 26 are Democrats, 13 are business majors, and 3 of the business majors are Democrats. If one student
1. 1 answer
2. asked by Amber
3. 2,665 views
A road rises 1m for every 15m measured along the road.a. What is the angle of inclination of the road to the nearest degree? b.
1. 1 answer
2. asked by Anonymous
3. 2,539 views
How many grams of the nonelectrolyte sucrose (molar mass -342 g / mole) must be added to 450 grams of water (molar mass 18.0 g /
1. 2 answers
2. asked by سارا
3. 2,510 views
A piece of wire x cm long is to be cut into two pieces, each to bent to be a square. the length of a side of one square is to be
1. 2 answers
2. asked by Angy
3. 2,436 views
find the area of the region bounded by the parabola y^2= 16x and its latus rectum
1. 2 answers
2. asked by Tony
3. 2,413 views
You are creating a carbon cycle poster. Which object could you add to the image as another example of combustion of fossil
1. 4 answers
2. asked by blue
3. 2,348 views
Why does the author organize"The Seasons Curmudgeon Sees the Light,"as she does? By Mary C. CurtisA. to contrast fall weddings
1. 5 answers
2. asked by blue
3. 2,233 views
In the Doric order, which of the following are alternating panels in the frieze, which are sometimes sculpted?A. Metopes B.
1. 2 answers
2. asked by Pat
3. 2,179 views
A 50.0 g sample of lead starts at 22 degrees Celsius and is heated until it absorbs 8.7 X 10^2 of energy. Find the final
1. 1 answer
2. asked by Princess
3. 2,137 views
In what ways is Bohr's model of the atom similar to and different from Thomson's model?
1. 4 answers
2. asked by Laura
3. 2,135 views
A cylinder containing 15.0 L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be
1. 4 answers
2. asked by Aaqib Zaman
3. 2,131 views
it costs 8 dollars to manufacture and distribute a backpack.If the backpack sell at x dollar each, the number sold , n, is given
1. 1 answer
2. asked by John
3. 2,118 views
The tomato is dropped. What is the velocity, v , of the tomato when it hits the ground? Assume 91.9% of the work done in Part A
1. 2 answers
2. asked by maxime Jones
3. 2,092 views
A copper wire that has been heated to 520 degrees Celsius for pliability is plunged into 350 mL of water at 18 degrees Celsius.
1. 5 answers
2. asked by Hemerla
3. 2,050 views
Melina walked her dog 2 1/5 miles. Cathy walked her dog 1 3/4 times as far as Melania did. How many more miles did Cathy walk
1. 5 answers
2. asked by charles
3. 1,675 views
a man 5 ft tall casts a shadow of 6 ft. The angle of elevation f the sun is?
1. 1 answer
2. asked by will
3. 1,642 views
find the value of the variable that would make the equation true..1.) 5x = 15 2.) -3x = 21 3.) 9x = -27 4.) -7x = -12 5.) 2/3 x
1. 5 answers
2. asked by Anonymous
3. 1,549 views
Which of the following demonstrates that reactants and profucts are chemically different?A. Zn+2HCI-->2HCI+Zn B.
1. 3 answers
2. asked by Callie
3. 1,515 views
uniform ladder 25 ft long rests against a smooth vertical wall. The ladder weighs 15 Kg. The lower end of the ladder is 15 ft
1. 1 answer
2. asked by dody
3. 1,433 views
In what ways is Bohr's model of the atom similar to and different from Thomson's model?I still need someone to help me.. I don't
1. 1 answer
2. asked by Laura
3. 1,367 views
The heat of neutralization of HCl (aq) by NaOH is -55.9Kj/mol H2) produced. If 50ml of 1.6M NaOH at 25.15 celsius is added to
1. 1 answer
2. asked by Annie
3. 1,365 views
One way to generate oxygen is to heat potassium chlorate, KCLO3 (the other product is potassium chloride). If 386 mL of oxygen
1. 1 answer
2. asked by Aaqib Zaman
3. 1,345 views
So for this question: The number of bacteria present in a culture is given by the following model B=1000e^0.276t; where t= time
1. 1 answer
2. asked by Micki
3. 1,297 views
1. Even if the sun were to rise in the west, I would never change my mind.2. Even though the sun were to rise in the west, I
1. 1 answer
2. asked by rfvv
3. 1,294 views
Brent divided 3 1/5 by a number and got 4 1/2. What number did he divide by?
1. 3 answers
2. asked by josh
3. 1,277 views
In the figure, a 4.3 kg block is accelerated from rest by a compressed spring of spring constant 660 N/m. The block leaves the
1. 2 answers
2. asked by brian
3. 1,273 views
For a gas sample whose total pressure is 740 torr, what are the partial pressures if the moles of gas present are 1.3 mol N2,
1. 1 answer
2. asked by Aaqib Zaman
3. 1,223 views
The volume V (r) of a sphere is a function of its radius r. Suppose a spherical snowball with aradius 2 f t started to melt so
1. 2 answers
2. asked by Renzo
3. 1,175 views
In an experiment, a mixture of two gases occupies a volume of 3.00 L at a temperature of 22.5 degree centigrade. The mixture
1. 2 answers
2. asked by Aaqib Zaman
3. 1,092 views
Two brothers, Sam and Jim, were fighting over the division of their ancestral property. After ten years of legal battle, a
1. 6 answers
2. asked by Matt
3. 1,079 views
If we assume that the energy-level diagrams for homonuclear diatomic molecules shown in Figure 9.42 in the textbook can be
1. 1 answer
2. asked by johnpaynejoelgishhansjurgmaria
3. 1,068 views
7 nails has a of 50g how many nails have a mass of 1/2kg
1. 1 answer
2. asked by Debbie
3. 1,054 views
Which civilization had the most fortifications?A. Cycladic B. Minoan C. Mycenaean D. Harappan I think it's C.
1. 1 answer
2. asked by Pat
3. 1,052 views
If 9560 J of energy were absorbed by 500. g of ice at 0.0 °C, what would be the final temperature?Can someone walk me through
1. 1 answer
2. asked by K
3. 1,045 views
A circular pond has radius r. The area of a pond whose radius is 6m more than r is 4 times the area of the first pond. The
1. 1 answer
2. asked by Anonymous
3. 1,041 views
if the square root of twice a number is diminished by three, the result is 5. what is the number?
1. 2 answers
2. asked by JUN
3. 1,014 views
The complete combustion of ethanol, C 2 H 5 OH (FW = 46.0 g/mol ), proceeds as follows:What is the enthalpy change for
1. 0 answers
2. asked by maxime Jones
3. 1,012 views
1. In an ice calorimeter experiment, what is the relationship between joules and volume change expressed in joules/mL of volume
1. 0 answers
2. asked by xx
3. 972 views
Suppose that a water wheel has a radius of 22 feet and makes a complete revolution every 14 seconds. The bottom of the water
1. 1 answer
2. asked by Jet
3. 953 views
The maker of an automobile advertises that it takes 11 seconds to accelerate from 15 kilometers per hour to 90 kilometers per
1. 1 answer
2. asked by Jessica
3. 939 views
Here is the scenario.-------------------------------------- Are Smarties as addictive as drugs? A new research study proves that
1. 5 answers
2. asked by John Doe
3. 889 views
A wheel is free to rotate about its fixed axle. A spring with constant k = 290 N/m is attached to one of its spokes a distance r
1. 0 answers
2. asked by edward
3. 856 views
Calculate the amount of heat absorbed when 58 g of steam at 117◦C are completely converted to ice at −32.5◦C.Specific
1. 2 answers
2. asked by Q
3. 829 views
What is the inverse of each of the functions defined by the following equations, if the inverseexists. If the inverse does not
1. 0 answers
2. asked by Keith
3. 825 views
Identify the intermolecular attractive force(s) that must be overcome to vaporize CH3Cl(l).
1. 1 answer
2. asked by Hannah
3. 822 views
Your teacher placed a 4.5 kg block at the position marked with a “ +” (horizontally, 0.5 m from the origin) on a large
1. 1 answer
2. asked by Amanda
3. 812 views
1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population
1. 1 answer
2. asked by sara
3. 808 views
consider the 666 N weight held by two cables shown below. The left hand cable and tension 530 N and makes an angle of theta2
1. 1 answer
2. asked by sally
3. 774 views
the measure of the sides of a rectangle are ( 4 √ ̅2 - √ ̅3cm) by ( √ ̅6 + 2 cm). Find the measure of its diagonal.
1. 1 answer
2. asked by JUN
3. 773 views
a city is served by two newspapers-the Tribune and the Daily News. Each Sunday a reader purchases one of the newspapers at a
1. 0 answers
2. asked by tracy
3. 769 views
The speed of a transverse wave on a stretched string can be changed by adjusting the tension ofthe string. A stationary wave
1. 1 answer
2. asked by Clement
3. 760 views
1.70 L of 0.550 M H2O2 reacts according to the following reaction.2H2O2(aq) -> 2H2O(l) + O2(g) How much H2O is formed? (molar
1. 1 answer
2. asked by bekah
3. 757 views
What is the exchange of gases between the lungs and the blood?A. Internal respiration B. Posterior respiration C. External
1. 8 answers
2. asked by Night
3. 744 views
A sample of a smoke stack emission was collected into a 1.25 L at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO,
1. 1 answer
2. asked by Aaqib Zaman
3. 739 views
1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population
1. 1 answer
2. asked by sara
3. 726 views
If a pond can support up to 10, 000 fish, the rate of growth of the fish population is jointlyproportional to the number of fish
1. 0 answers
2. asked by Francis
3. 725 views
A copper wire that has been heated to 520 degrees Celsius for pliability is plunnged into 350 mL of water at 18 degrees Celsius.
1. 0 answers
2. asked by Michelle
3. 720 views
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate DEO for the followingreaction. H2O (l) → H2 (g) +
1. 1 answer
2. asked by Mahnoor
3. 716 views
2.Find the slope of a line that passes through (–2, –3) and (1, 1).The fraction one third. 1 2 The fraction four thirds. 3.
1. 1 answer
2. asked by Mia
3. 690 views
A sample of a smoke stack emission was collected into a 1.25L tank at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6%
1. 0 answers
2. asked by Aaqib Zaman
3. 688 views
A 50.0 g sample of lead starts at 22 degrees Celsius and is heated until it absorbs 8.7 X 10^2 of energy. Find the final
1. 1 answer
2. asked by Jiskha Help
3. 687 views
A 20.0% (w/w) aqueous solution of NaOH has a density of 1.125 g/cm^3. What is the molarity (M) of this solution?
1. 1 answer
2. asked by bekah
3. 684 views
2.Find the slope of a line that passes through (–2, –3) and (1, 1).The fraction one third.< 1 2 The fraction four thirds.
1. 1 answer
2. asked by Mia
3. 679 views
In regards to decisions affecting foreign policy, how did Jefferson’s actions as President validate or contradict his
1. 1 answer
2. asked by Julie
3. 663 views
Kuhn (2000) wrote that “Thus, to study memories is to study much of what we are interested in under the headings of cognition
1. 1 answer
2. asked by Sharon
3. 654 views
How does the first amendment protect free expression?
1. 6 answers
2. asked by Ariana
3. 637 views
what metaphors or personification could i use to describe a busy bus stop?thank you
1. 2 answers
2. asked by Anonymous
3. 633 views
I already asked this question,I just wanted to clarify the answer.Problem: The polynomial f(x) has degree 3. If f(-1)=15,
1. 1 answer
2. asked by Trish Goal
3. 631 views
Convert 8.690909 . . . into a single fraction using infinite geometric series.
1. 1 answer
2. asked by Alecx
3. 629 views
Exactly .203g of zinc metal is dissolved in dilute HCl(aq) in an ice calorimeter. The heat released melts enough ice to produce
1. 2 answers
2. asked by xx
3. 622 views
The respiratory conducting passages are divided into the ________.A. Upper and lower respiratory tract B. Posterior and exterior
1. 1 answer
2. asked by Night
3. 614 views
A transport company purchased a truck for $40,000. The operating cost was $2,000 per month, with average revenues of $4,000 per
1. 0 answers
2. asked by Anonymous
3. 609 views
1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population
1. 1 answer
2. asked by sara
3. 609 views
Last week, Roger suddenly quit his job. He told his family he had decided tolearn carpentry. He purchased a truckload of wood
1. 1 answer
2. asked by Anonymous
3. 607 views
Inflation Exam1) You are developing a data base for Army tracked combat vehicles and you are normalizing the data base to base
1. 4 answers
2. asked by karen
3. 597 views
The polynomial f(x) has degree 3. If f(-1)=15, f(0)=0, f(1)=-5, f(2)=12, then what are the x-intercepts of the graph of f?
1. 1 answer
2. asked by Trish Goal
3. 596 views
examine the public policy of the exclusionary rule with respect to the 5th Amendment requirement of self-incrimination. Your
1. 1 answer
2. asked by joanna
3. 595 views
1. I'm so happy with my job.2. I'm so satisfied with my job. (Are both the same in meaning?) 3. We dress up and shout "Trick or
1. 2 answers
2. asked by rfvv
3. 593 views
How do i get a good grade on my really hard essay without messing up?!!?
1. 4 answers
2. asked by Susie
3. 587 views
Condense the expression to the logarithm of a single quantity.5lnx-6ln(x+2)
1. 1 answer
2. asked by Fiona
3. 582 views
find the area of the region bounded by the parabola y^2= 16x and its latus rectum
1. 0 answers
2. asked by Tony
3. 577 views
What is the molarity of a solution prepared by dissolving 820. g of sodium phosphate, Na3PO4, in water and diluting to 2.89
1. 1 answer
2. asked by Anna
3. 573 views

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