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Questions Asked on April 7, 2010

In photosynthesis, plants form glucose and oxygen from carbon dioxide and water.6CO_2+6H_2O --> C_6H_12_O_6+6O_2 a) Calculate
1. 2 answers
2. asked by Beau
3. 7,488 views
a 600N person picks up a 180 N suitcase positioned so that the suitcase's center of gravity is 20cm lateral to the location of
1. 1 answer
2. asked by justine
3. 3,993 views
Identify the species oxidized and the species reduced in each of these redox equationsA. 3Br2 + 2Ga -> 2GaBr3 B. HCL + Zn ->
1. 2 answers
2. asked by Anonymous
3. 3,878 views
I did an experiment on a burning candle, and I need help with some of the questions. Thank you very much in return. Please no
1. 3 answers
2. asked by Sara
3. 3,516 views
Is it possible to distinguish two spots that have the same Rf value but represent different compounds? Give two different
1. 2 answers
2. asked by Hugh
3. 2,972 views
A 22.44g sample of iron absorbs 180.8J of heat, upon which the tempature of the sample increases from 21.1 C to 39.0 C. What is
1. 2 answers
2. asked by Camarra
3. 2,959 views
A 2.00L flask is filled with propane gas(C3H8)at 1.00atm and 15C. What is the mass of propane in the flask?
1. 8 answers
2. asked by Courtney
3. 2,639 views
How many orbitals have the following quantum numbers: n=6, l=2, ml=-2??a. 0, b. 5, c. 7, d. 10, e.6 Since only one can include
1. 1 answer
2. asked by James
3. 2,615 views
What molarity of a NH4NO3 solution has a pH of 5.220? Kb for NH3 is 1.8 x 10^-5.Choose one answer. a. 6.31x 10-6. b. 2.21 x 10-6
1. 1 answer
2. asked by AMI
3. 2,444 views
Assume that a researcher randomly selects 14 newborn babies and counts the number of girls selected, x. The probabilities
1. 2 answers
2. asked by Anonymous
3. 2,183 views
which equation is equivalent to 5x-2(7x+1)=14x? why?a -9x-2=14x b -9xt1=14x c -9x+2=14x d 12x-1=14x
1. 2 answers
2. asked by eva
3. 2,019 views
About how many people lying head-to-toe are needed to strech around the earth? Is it closest to : a) 1 million; b) 25 million;
1. 3 answers
2. asked by Nina
3. 2,012 views
Consider the experiment of rolling a single die. Find the probability of the event described.What is P(number showing is not
1. 2 answers
2. asked by meghan
3. 1,949 views
An airplane flies from Ft. Myers to Sarasota, adistance of 150 miles, and then turns through an angle of 50° and flies to
1. 1 answer
2. asked by singh
3. 1,905 views
What is the polar form of the equation3x - 4y = 12? The answer is r = 12/ (3cosx - 4 sinx) (x = theta) I don't know how to get
1. 2 answers
2. asked by Jamie
3. 1,904 views
It has been suggested that rotating cylinders about 10 mi long and 5.6 mi in diameter be placed in space and used as colonies.
1. 3 answers
2. asked by Alexander
3. 1,646 views
Calculate the [NH4+] in solution that is 0.25 M NH3 and 0.20 M NaOH. (Kb for NH3 = 1.8 x 10-5)I set up ICE from the equation:
1. 2 answers
2. asked by AMI
3. 1,581 views
if albert baked 60 cookies and gave 7/12 away how many cookies does he have left
1. 5 answers
2. asked by savannah
3. 1,537 views
what is 150 divided by 2
1. 2 answers
2. asked by savannah
3. 1,533 views
Five cards are drawn at random without replacement from and ordinary deck of 52. What is the probability all 5 cards are from
1. 4 answers
2. asked by Kassie
3. 1,532 views
The value of H° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (g)
1. 1 answer
2. asked by Camarra
3. 1,518 views
Carbon-14 has a half-life of 5700 years. The charcoal from a tree killed in the volcanic eruption that formed Crater Lake in
1. 1 answer
2. asked by Sarah
3. 1,498 views
Imagine you are an elected official with the responsibility of drafting legislation designed to protect our environment. What
1. 1 answer
2. asked by Anonymous
3. 1,419 views
a) Show that if A has a row of zeros and B is any matrix for which AB is defined, then AB also has a row of zeros.
1. 1 answer
2. asked by Sarah
3. 1,342 views
10 multiple choice questions each with three possible answers only one of which is correct. A student guesses the answer to
1. 5 answers
2. asked by Kim
3. 1,341 views
how many different pizzas can be made if a pizza shop has 6 meat toppings, 5 vegetable toppings, and 3 cheese toppings to choose
1. 1 answer
2. asked by julie
3. 1,309 views
PLEASE HELP!!Solve: 1. cos(arcsin(4/5))= ?? 2. tan(arccos(4/5))= ?? 3. cos(arctan(3))= ?? Note: Give exact answers!!
1. 3 answers
2. asked by jh
3. 1,298 views
Calculate the solubility of silver iodide in a 1.0 M sodium cyanide solution.Ksp = 8.5 x 10^-17 for AgI Kform = 2.5 x 10^5 for
1. 0 answers
2. asked by Erin
3. 1,295 views
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 and a
1. 2 answers
2. asked by Hoa
3. 1,239 views
When 0.320 moles of NH4Cl is dissolved in 1.00 L of water, the temperature drops by 13.7 degrees C. What is the heat of solution
1. 4 answers
2. asked by anita
3. 1,212 views
11. Runner A crosses the starting line of a marathon and runs at an average pace of 5.6 miles per hour. Half an hour later,
1. 2 answers
2. asked by Anonymous
3. 1,193 views
In many works of literature, an individual's encounter with deathor destruction ultimately leads to the individual's affirmation
1. 1 answer
2. asked by Joel
3. 1,179 views
Five kg of ice cubes are moved from the freezing compartment of a refrigerator into a home freezer. The refrigerator's
1. 1 answer
2. asked by evelyn
3. 1,168 views
1. Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas
1. 1 answer
2. asked by Nicole
3. 1,119 views
Calcaulate the pH after 10.0 mL of 0.40 M HCl is added to 20.0 mL of 0.50 M NaOH.I wasn't sure on how to start this problem. I
1. 1 answer
2. asked by AMI
3. 1,116 views
Suppose the money supply is currently 500 billion and the Fed wishes to increase it by 100 billion. Given a required reserve
1. 2 answers
2. asked by Debbie
3. 1,112 views
Which line best paraphrases the excerpt from "Ode on a Grecian Urn"?Ah, happy, happy boughs! that cannot shed Your leaves, nor
1. 1 answer
2. asked by Skye
3. 1,110 views
A passenger in an airplane flying at an alti-tude of 14 kilometers sees two towns directly to the left of the plane. The angles
1. 1 answer
2. asked by Carter
3. 1,106 views
If the reading on a electric meter was 2345 kilowatt-hour and the next mouth was 3456 , how much electrical energy was used ?
1. 2 answers
2. asked by Gwen
3. 1,102 views
In a reaction, 39.5 g of chromium(III) oxide reacts with 14.0 g of aluminum to produce chromium and aluminum oxide. If 27.0 g of
1. 2 answers
2. asked by Anonymous
3. 1,100 views
Can a hypothesis test yield a statistically significant (say p<=0.05), yet practically meaningless result? Give an example of
1. 0 answers
2. asked by Liz
3. 1,098 views
10.0 mL aliquot of 0.100M Na3AsO4 is titrated with 0.100M HCl.pKa1=2.25 pKa2=6.77 pKa3=11.60 Sketch the titration graph by
1. 6 answers
2. asked by tara
3. 1,055 views
What is the pH of a solution prepared by dissolving 8.40 g of aniline hydrochloride C6H5NH3Cl in 750 mL of 0.210 M
1. 0 answers
2. asked by anonymous
3. 1,054 views
In the ideal apparatus shown in the diagram, m1 = 2.0 kg. What is m2 if both masses are at rest? How about if both masses are
1. 1 answer
2. asked by Anonymous
3. 1,050 views
A king couldn't sleep so, he devoured 1/6 of a bowl of mangoes. Later, the queen got hungry and took 1/5 of the bowl of mangoes.
1. 1 answer
2. asked by Rae
3. 1,045 views
What do you think Keats means in these lines from "When I Have Fears That I May Cease to Be"?I may never live to trace / Their
1. 1 answer
2. asked by Skye
3. 1,037 views
Consider three charged particles placed along the x-axis. The particle with q1 = 9.27 nC is at x = 7.66 m and q2 = 4.82 nC is at
1. 2 answers
2. asked by echem
3. 1,034 views
2. Carbon monooxide CO is product of incomplete combustion of fuel. Find the volume that 42g of CO gas occupies at STP
1. 3 answers
2. asked by Courtney
3. 1,017 views
An analytical chemist determines that an estuarine water sample contains 1.5 g/L of sulfate ion. What is the concentration in
1. 1 answer
2. asked by Laura
3. 999 views
Trying to name this compound and figure out its oxidation state[ CoBr2(NH3)3(H2O) ]+ I came up with
1. 1 answer
2. asked by Trixie
3. 993 views
1. He has lunch at 12:00.2. He has lunch at 12:00 p.m. 3. He has lunch at 12. 4. He has lunch at 12 p.m. 5. He has lunch at
1. 4 answers
2. asked by rfvv
3. 970 views
An isosceles triangle is a triangle with two sides that are the same length. Find the measure of the two equal angles to the
1. 1 answer
2. asked by Lori
3. 946 views
25. Briefly explain the difference between product design and system design.25. There are a few differences between system
1. 5 answers
2. asked by y912f
3. 941 views
Determin the absolute extreme values of the function on the given interval.1.)y= 3 sin x + 4 cos x, xE[0, 2pie]
1. 2 answers
2. asked by Terry
3. 932 views
what is the significance of a tributary?
1. 1 answer
2. asked by Olga
3. 921 views
Six mice are in an experiment on nutrition and 2 are chosen at random for the control group. What is the probability that the
1. 1 answer
2. asked by Kassie
3. 921 views
Suppose X is a normally distributed random variable with the mean u(Mu) and variance sigma^2. Suppose P(X </= 10) - .6915 and P
1. 1 answer
2. asked by Kassie
3. 917 views
It has been proposed that wood alcohol, CH3OH, a relatively inexpensive fuel to produce, be decomposed to produce methane.
1. 1 answer
2. asked by Anmol
3. 910 views
For which one of the following reactions is the value of H°rxn equal to H°f for the product?
1. 1 answer
2. asked by Camarra
3. 905 views
Which kind of ode is "Ode on a Grecian Urn"? (1 point)* Pindaric * Horatian * irregular * devotional
1. 1 answer
2. asked by Skye
3. 883 views
Which is the best paraphrase of this excerpt from "On First Looking into Chapman's Homer"?. . . all his men / Looked at each
1. 1 answer
2. asked by Skye
3. 882 views
In photosynthesis, plants form glucose and oxygen from carbon dioxide and water.6CO_2+6H_2O --> C_6H_12_O_6+6O_2 a) Calculate
1. 3 answers
2. asked by Beau
3. 873 views
How is government authority distributed in unitary, federal, and confederal systems?
1. 1 answer
2. asked by Courtney
3. 869 views
a) Photosynthesis is estimated to produce 360.0 g (dry weight) of plant matter per square meter, 50% of which is carbon.
1. 1 answer
2. asked by Laura
3. 855 views
Select all of the answers that apply.A map _____. 1)is a representation of the earth's surface 2)is a portable document
1. 1 answer
2. asked by Anonymous
3. 851 views
a 20kg block is connested to a 30kg block by a string that passes over a frictionless pully. the 30kg block is connected to a
1. 1 answer
2. asked by sello
3. 849 views
Can someone help me with this question?A) With the emergence of urban cities came the need for a distinct city government,
1. 2 answers
2. asked by Janye
3. 839 views
My science post is almost at the bottom and I need it to be checked urgently. I see science helpers on this site as of right
1. 5 answers
2. asked by Sara
3. 829 views
1. There are a lot of clubs in my school.2. There are a lot of clubs in our school. (Are both correct? Can we use 'our' instead
1. 2 answers
2. asked by rfvv
3. 801 views
Indicate whether the sequence is arithmetic, geometric or neither 10,12,22,32,42.....
1. 2 answers
2. asked by jj
3. 799 views
A company is increasing production at the rate of 25 units per day. The daily demand function is determined by the fact that the
1. 0 answers
2. asked by John
3. 795 views
For Keats in "Ode on a Grecian Urn," the lovers pictured on the urn symbolize his* eternal youth and hope. * maturation and full
1. 1 answer
2. asked by Skye
3. 786 views
A satellite moves in a circular orbit around Earth at a speed of 4390 m/s.(a) Determine the satellite's altitude above the
1. 2 answers
2. asked by Kelsey
3. 771 views
A particle of mass m moving at 5 m/s in the positive x direction makes a glancing elastic collision with a particle of mass 2m
1. 0 answers
2. asked by Lauren
3. 756 views
Hello!I am teaching English to 8th graders next week (they are learning English as a foreign language for 5 years) I have two
1. 3 answers
2. asked by mary
3. 747 views
A theater shows 8 movies at 3 prices five times each day. How many types of tickets does the theater sell?How do I solve this
1. 2 answers
2. asked by sara
3. 738 views
"Lines Composed a Few Miles Above Tintern Abbey" is a poem that celebrates the power of* analysis. * deduction. * memory. *
1. 2 answers
2. asked by Skye
3. 731 views
Suppose a fixed cannon is to fire a projectile at an enemy tank, which is moving toward the cannon at a speed of 15 mph. If the
1. 1 answer
2. asked by drew
3. 720 views
Almost all maps have these four things:A)scale, legend, title, and compass B)rock units, legend, symbols, and scales C)contour
1. 2 answers
2. asked by Anonymous
3. 703 views
Identify the rate, base, and amount in the following applications. Do not solve the applications at this point.22% of
1. 1 answer
2. asked by tea
3. 701 views
Which of the following is NOT true of colligative properties? Colligative properties are...A. dependent on the mass of solute
1. 2 answers
2. asked by eng
3. 692 views
The small town of Middling experiences a sudden doubling ofthe birth rate. After three years, the birth rate returns to normal.
1. 0 answers
2. asked by deborah
3. 692 views
I determined the area moment of inertia and the product of inertia of the cross-section of a beam about the centroidal axes
1. 2 answers
2. asked by Claire
3. 679 views
True or False?RAM is the electronic holing area on the computer. False???
1. 5 answers
2. asked by Keen
3. 675 views
The initial pressure for the compounds involved in the reaction displayed were determined to be P(SO2(g)) = 0.5932 atm, P(O2(g))
1. 1 answer
2. asked by bme1
3. 671 views
can you tell me what i did wrong on this problemRigid rods of negligible mass lying along the y axis connect three particles.
1. 0 answers
2. asked by phys
3. 661 views
A number pattern with the rule 6n, where n represents the position of the number in the pattern.What are the first five numbers
1. 2 answers
2. asked by Debbie
3. 660 views
Hint for this assignment: Pay attention to the units of measure. You may have to convert from feet to miles in this assignment.
1. 1 answer
2. asked by Tisha
3. 656 views
The freezing point of a solution isA. lower than the freezing point of the solvent alone because higher temperature is required
1. 1 answer
2. asked by eng
3. 649 views
A toy rocket is fired off a platform with an initial speed of 223 ft/sec at an angle of elevation of 32 degrees and achieves a
1. 3 answers
2. asked by drew
3. 649 views
What is Wordsworth's main subject in "The World Is Too Much With Us"?* the frenzied quest for wealth * the decline of classical
1. 1 answer
2. asked by Skye
3. 647 views
I need help on finding the definitions to these:Pressure being constant, the amount of heat in a chemical equation ___________.
1. 2 answers
2. asked by Bill
3. 646 views
You helped me with my observations yesterday, but I need help with my questions as well. I tried to answer as many as I could by
1. 4 answers
2. asked by Sara
3. 642 views
The "real heart" of the progressive movement was the effort by reformers to
1. 1 answer
2. asked by Anonymous
3. 640 views
what do you get when you cross a stick of dynamite with a lemon pie?
1. 4 answers
2. asked by sam
3. 639 views
Which was a key element of the Gothic novel that Mary Shelley set out to employ in Frankenstein?* the inexplicable * the
1. 3 answers
2. asked by Skye
3. 637 views
The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams,
1. 0 answers
2. asked by Plaster
3. 635 views
What factors shaped the move from colonial, country life to modern, urban life? What was urban city life like during the rise of
1. 1 answer
2. asked by Maryanne
3. 632 views
If the initial pressure of SO3(g) is 4.775 atm, calculate the % of SO3(g) left over after the reaction reaches equilibrium
1. 5 answers
2. asked by bme1
3. 629 views
"Lines Composed a Few Miles Above Tintern Abbey" is easy to recognize as a Romantic poem because it* describes the narrator's
1. 0 answers
2. asked by Skye
3. 625 views

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