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Questions Asked on May 20, 2010

Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is
1. 6 answers
2. asked by Keith
3. 11,716 views
A potential difference of 4.75 kV is established between parallel plates in airf the air becomes ionized (and hence electrically
1. 3 answers
2. asked by Sally
3. 5,430 views
When 2 mol of solid magnesium (Mg) combines with 1 mole of oxygen gas (O2), 2 mol of solid magnesium oxide (MgO) is formed and
1. 2 answers
2. asked by Kim
3. 4,583 views
The probability that a university graduate will be offered no jobs within a month of graduation is estimated to be 5%. The
1. 5 answers
2. asked by Miranda
3. 4,270 views
Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many
1. 2 answers
2. asked by Jack
3. 3,919 views
the molar heat of vaporization for water is 40.79 kJ/mol. How would you express this heat of vaporization in joules per gram.
1. 2 answers
2. asked by Sienna
3. 3,164 views
Aluminum nitrate and ammonium chloride react to form alluminum chloride, nitrogen, and water. what mass of aluminum chloride is
1. 2 answers
2. asked by amanda
3. 2,799 views
The specific heat of copper is .4 joules/gram degrees Celsius. How much heat is needed to change the temperature of a 30 gram
1. 2 answers
2. asked by Jake
3. 2,443 views
What are the equations for the following?Positron emission from silicon-26 and Sodium-22 undergoes electron capture I really
1. 4 answers
2. asked by Aubrey
3. 2,421 views
If f(x) = - 2x2 + 2x - 3, what is f(5)?
1. 3 answers
2. asked by Bill
3. 2,254 views
the circle is circumscribed by the pentagon as shown (not drawn to scale). If QZ=10, YX=9, XW=9, UW=17, and SU=10, find the
1. 3 answers
2. asked by josh
3. 2,157 views
A baby bounces up and down in her crib. Her mass is 13.5 kg, and the crib mattress can be modeled as a light spring with force
1. 3 answers
2. asked by gill
3. 2,121 views
Growth and DecayDave bought a new car 8 years ago for $8400. Tobuy a new car comparably equipped now would cost $12,500.
1. 1 answer
2. asked by Anonymous
3. 2,046 views
A chunk of silver has a heat capacity of 42.8 J/degrees C and a mass of 181g. Calculate the specific heat of silver.Did I do
1. 1 answer
2. asked by Ralph
3. 1,893 views
when 45g of an alloy is dropped into 100.0 g of water at 25c, the final temperature is 37c. what is the specific heat of the
1. 1 answer
2. asked by andrea
3. 1,853 views
Need help finding dimensions of a triangular prism. It has a volume of 900 cubic inches. Two of the dimensions are consecutive
1. 1 answer
2. asked by Brett
3. 1,822 views
write and balanced equation for the formation of magnesium nitride from it elements
1. 2 answers
2. asked by nia
3. 1,812 views
at a deep-sea station 200m below the surface of the Pacific Ocean, workers live in a highly pressurized environment. How many
1. 3 answers
2. asked by Billy
3. 1,761 views
A chunk of silver has a heat capacity of 42.8 J/degrees C and a mass of 181g. Calculate the specific heat of silver.
1. 2 answers
2. asked by Ralph
3. 1,746 views
Find the area of the shaded region.the outter shape is a rectangle and the inside shape is a triangle everything but the
1. 1 answer
2. asked by ashley
3. 1,544 views
Algebra For questions 1-5, find the value of the variable.1. x = (1 point) 2. y = (1 point) 3. x = (1 point) 4. x = (1 point) 5.
1. 4 answers
2. asked by Sasha Z.
3. 1,503 views
I need to find the dimensions of this rectangular prism. It has a volume of 108 cubic inches. The length and width of the base
1. 1 answer
2. asked by Brett
3. 1,473 views
a vending machine takes only nickels and dimes. there five times as many dims as nickels in the machine. the face value of the
1. 1 answer
2. asked by sally
3. 1,431 views
A rectangular prism has the following characteristics. It has a volume of 71 cubic inches. The sum of the three lengths is 14.
1. 1 answer
2. asked by Brett
3. 1,336 views
how do you calculate the area of a trapezoid the has the base of 11.25 the height of 6.5 and the top of the trapezoid 7.50
1. 1 answer
2. asked by danica
3. 1,316 views
a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where
1. 1 answer
2. asked by Brad
3. 1,307 views
I'm writing a report by interpreting myself as a Jew during the holocaust and I have to write a journal entry about 8 to 10
1. 6 answers
2. asked by Jennifer
3. 1,296 views
A pair of dice is rolled~ A possible event is rolling a multiple of 5.What is the probability of the complement of the event? A.
1. 2 answers
2. asked by NatoshaMarie
3. 1,264 views
Mrs.Ryan gave her class cupcakes. She gave half the class yellow, a third of her class chocolate and the remaining students
1. 1 answer
2. asked by YArmainee
3. 1,250 views
How does energy flow through the biosphere?
1. 0 answers
2. asked by Olivia
3. 1,245 views
"Would it be possible to have an addition polymer synthesized from a monomer that has only single bonds? Why or why not?"==> I
1. 3 answers
2. asked by Emily
3. 1,213 views
How do I draw the diagram/graph for this problem?Find the exact values of the six trigonometric functions of theta if the
1. 1 answer
2. asked by Ana
3. 1,198 views
The question is how many kilojoules are required to melt 24g of ice at 100 degrees celsius?Can you please correct me if im
1. 1 answer
2. asked by evelyn
3. 1,173 views
Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is
1. 2 answers
2. asked by Kieth
3. 1,098 views
How many kilojoules of heat are absorbed when 1.00L of water is heated from 18 degrees C to 85 degrees C?Can you please explain
1. 2 answers
2. asked by Sarah
3. 1,076 views
Simplify: (6y + 10z) - (13y - 5z + 4)
1. 3 answers
2. asked by Cody
3. 1,025 views
One paving machine can surface 1 km of highway in 6 hours. Another can surface 1 km of highway in 8 hours. how long would it
1. 0 answers
2. asked by Steven
3. 1,000 views
How many kilojoules of heat are absorbed when 1.00L of water is heated from 18 degrees C to 85 degrees C?Did I do this right?
1. 1 answer
2. asked by Sarah
3. 996 views
The measures of the angles in quadrilaterals are in the extended ratio of 3:4:5:6. What are the measures of the angles?
1. 1 answer
2. asked by Emily
3. 935 views
We have a triangular prism that has the following characteristics. It has a volume of 360 cubic inches. The base of the triangle
1. 1 answer
2. asked by Brett
3. 907 views
A sample of oxygen occupies 10.0 L under a pressure of 105 kPa. At whatpressure will it occupy 13.4 L if the temperature does
1. 1 answer
2. asked by maria
3. 899 views
The equation for the reaction of sodium with water is as follows:2Na(s) �2H2O(l) £ H2(g) �2NaOH(aq) How many liters of H2 are
1. 1 answer
2. asked by maria
3. 886 views
IN THIS EXPERIMENT YOU FILL A PREFROM WITH WATER AND PUT A DRINKING STRAW INTO THE PREFROM AND USE CLAY TO SEAL THE OPENING.It
1. 1 answer
2. asked by POPCORN
3. 883 views
WHICH FUNCTION LINEAR EXPONENTIAL OR QUADRATIC BEST MODELS THIS DATA(-1,3),(1,3),(3,27),(5,75),(7,147)
1. 1 answer
2. asked by miranda
3. 882 views
Let Y be a random number between 0 and 1 generated by an idealized random number generator. Find the following probabilities:A.
1. 1 answer
2. asked by Julia T
3. 852 views
Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is
1. 2 answers
2. asked by Kieth
3. 828 views
My class and I have to write a a-z story. It can be about anything. A-Z means that each sentence has to start with each diff
1. 5 answers
2. asked by Sara
3. 810 views
Train A is 12 mph slower than train B. Train A travels 230miles in the same time it takes train B to travel 290 miles. Find the
1. 1 answer
2. asked by Help Me Pleeease
3. 809 views
The concentration of NaOH is normally in the range of 3-6 M when they peel potatoes and soak them in a solution of NaOH , remove
1. 2 answers
2. asked by Sara
3. 804 views
pierre was born in the twentieth century and will be x years old in the year x squared. In what year was pierre born
1. 1 answer
2. asked by fred
3. 749 views
What do atoms forming the two bond types have in common(an ionic and covalent bond)?
1. 1 answer
2. asked by John
3. 732 views
f'(x) < 0 if |x| < 1And apparently this means f is decreasing on (-1, 1). I don't understand this. I know f'(x) < 0 means the
1. 2 answers
2. asked by Kelly
3. 732 views
-What are the products and reactants of chemosynthesis-What substance cam be measured in the water to estimate the amount of
1. 1 answer
2. asked by Karissa
3. 725 views
Suppose the hospital pays out $300,000 in dividends. A stockholder receives $10,000. If a stockholder's tax rate on dividends is
1. 2 answers
2. asked by Lashunta Battle
3. 722 views
Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many
1. 1 answer
2. asked by Jack
3. 717 views
The side lengths of a right triangle are each an integral number of units. If one of the legs is 13 units, what is the perimeter
1. 2 answers
2. asked by Zach
3. 716 views
What social, political, and economic changes pulled the North and the South farther apart? What was the final determining factor
1. 0 answers
2. asked by Gail
3. 706 views
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an
1. 0 answers
2. asked by Brianna
3. 697 views
What is the slope of the straight line 3x - 9y = 44
1. 3 answers
2. asked by ASWAT
3. 693 views
Matt used 2 hundreds, 18 tens, and 4 ones to model a number. What number did matt model?
1. 1 answer
2. asked by Anonymous
3. 692 views
Thhe members of a soccer team are to share the $540 cost of a banquet. When 5 students are unable to attend the cost per student
1. 1 answer
2. asked by Steven
3. 678 views
The Office Jet printer can copy Janet's dissertation in 10 min. The Laser Jet printer can copy the same documents in 8 min. If
1. 2 answers
2. asked by Marie
3. 677 views
I'm just needing a question to be ask: If you were head of health informaton management department at a hosptial later an FBI
1. 0 answers
2. asked by CC
3. 676 views
A 6 m flagpole casts a 5 m shadow at the sametime of the day as a building casts a 28m shadow. How tall is the building? I drew
1. 2 answers
2. asked by Jen
3. 663 views
Using calories, calculate how much heat 32.0g of water absorbs when it is heated from 25.0 degrees C to 80.0 degrees C. How many
1. 1 answer
2. asked by Jack
3. 649 views
How many kilojoules of heat are absorbed when 1.00L of water is heated from 18 degrees C to 85 degrees C?
1. 1 answer
2. asked by Sarah
3. 643 views
A student collects 400 mL of oxygen at 9.80 kPa. If the temperature remainsconstant, what volume would this gas occupy at 9.40
1. 2 answers
2. asked by maria
3. 634 views
The military conquest of the assyrians were made possible by theirA. powerful navy B. Efficient military organization and
1. 1 answer
2. asked by Amber
3. 629 views
Draw two parallel lines on your paper. Locate four points on the paper each an equal distance from both lines. Describe the
1. 3 answers
2. asked by lori
3. 618 views
Thanks for your last corrections. Can you check these sentences too?1)Particular attention is paid to the analysis ad
1. 1 answer
2. asked by Franco
3. 614 views
I don't get this statement. "Most cases (of typhoid fever) in developed countries are imported from endemic countries."
1. 3 answers
2. asked by AL 92
3. 606 views
In chapter 3 of the book "A Long Way Gone", is Ishmael Beah actually dreaming as he goes to bed reminicing about the memories of
1. 0 answers
2. asked by AL 92
3. 604 views
Calculate the volume of H2 produced at 300 K and 98.65 kPa when 48 g of Mgreacts with excess HCl according to the following
1. 1 answer
2. asked by maria
3. 599 views
What is the coefficient of the term of degree 4 in this polynomial?4x8 + 5x4 - 2x3 + x2 - 1
1. 1 answer
2. asked by jj black
3. 587 views
Why and how could you apply critical thinking when evaluating each of the following:• Articles • Advertising • Media •
1. 1 answer
2. asked by holly
3. 585 views
Perry ages 80,tends to put lot of salt on his food even when the food has already been salted during cooking.What is the most
1. 1 answer
2. asked by vedrana
3. 584 views
what can be the best way to explain the differences between exclusion and segregation??- Thanks
1. 1 answer
2. asked by rose
3. 581 views
A ship carries exactly 10 different signal flags. If eachpossible combination and ordering of 4 of these flags connotes a
1. 0 answers
2. asked by Felicia
3. 576 views
how do i write these in equations to represent each situation?1. the perimeter P of a rectangle is the sum of twice the length L
1. 2 answers
2. asked by Sara!
3. 575 views
Hi, For one part of my problem I have had to find the equation of a straight line that passes through two points, I have done
1. 0 answers
2. asked by Rich
3. 570 views
If f(x) = - 2x2 + 2x - 3, what is f(5)?
1. 1 answer
2. asked by Austin
3. 568 views
how do i write this in equation of this situationThe cost C of a telegram of 18 words is the cost F of the first 10 words plus
1. 4 answers
2. asked by Sara!
3. 557 views
which group believed the language of article 10 of the treaty of versailles contradicted the power of congress to declare war?
1. 2 answers
2. asked by Anonymous
3. 556 views
Thank you for your corrections.Can you check the very last sentences of the day, please?1) The sound of the music coming from
1. 1 answer
2. asked by Franco
3. 550 views
I forgot to include the following sentences. I hope you can look at them as well.8) The second theme, epiphany, describes a
1. 1 answer
2. asked by Franco
3. 548 views
can someone give me a list of 4 year colleges that teach criminology or criminal justice
1. 2 answers
2. asked by Angel
3. 546 views
We just learned equations & inequalities today and im so confused on how to do it!will someone help me??? -5 + 2 < -2
1. 2 answers
2. asked by Megan
3. 545 views
Okay, my teacher showed me in class this container. It had a balloon in the shape of a hand attached to the rim of the jar and
1. 1 answer
2. asked by ~anonymous
3. 538 views
Can you check these sentences for me?Thank you in advance. 1) Eveline belongs to a collection of fifteen stories which was
1. 1 answer
2. asked by Franco
3. 532 views
I need help with having to write an introduction on a persuasive essay about how smoking should be outlawed
1. 4 answers
2. asked by Tena
3. 530 views
Train A is 12 mph slower than train B. Train A travels 230miles in the same time it takes train B to travel 290 miles. Find the
1. 0 answers
2. asked by Marie
3. 525 views
Estimate the number of personally constructed greetingcards possible at a machine if there are 12 designs, 30 messages, 18
1. 0 answers
2. asked by Felicia
3. 518 views
When do girls stop growing?Also, if a family memeber had a late growth spurt would it be more likely that their child also have
1. 0 answers
2. asked by Anonymous
3. 511 views
please explain how a large variance from budget would you consider important to address on a monthly hospital variance report:5%
1. 0 answers
2. asked by Anonymous
3. 509 views
Thank you very much for your last corrections. Can you check these sentences too?1)Particular attention is paid to the analysis
1. 1 answer
2. asked by Franco
3. 497 views
How do you find the discount ofRegular Price $38 Discount 10%
1. 2 answers
2. asked by penelope
3. 495 views
A 1m^3 object is floating in water. A third of the object is submerged. How much does the object weigh?
1. 1 answer
2. asked by Ally
3. 491 views
I am having a hard time understanding key points to write my essay on. Can I get some opinions on why it is important to speak
1. 3 answers
2. asked by Amber
3. 482 views
Factor completely3p^2q + 9p^2q^2 - 12p^2q^3 I have done the following: 3p^2q(1+3q-4q^) but then i get stuck..not sure if that's
1. 2 answers
2. asked by help
3. 474 views
find, to the nearest minute, the solution set of 1- sin x = 3 cos^2 x over the domain 0 degrees to 360 degres
1. 0 answers
2. asked by Clarkney
3. 473 views

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