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Questions Asked on July 13, 2011

Hot air balloons float in the air because of the difference in density between cold and hot air. In this problem, you will
1. 1 answer
2. asked by Jenny
3. 9,804 views
RXN #1: H2 (g) + O2 (g) --> H2O2 (l) ; delta-H =?Calculate the enthalpy change (delta-H1) for the reaction above (RXN #1) using
1. 4 answers
2. asked by Ally
3. 5,946 views
In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from aninitial amount A0 at a given time t, and k
1. 2 answers
2. asked by sky
3. 5,487 views
An airplane has an airspeed of 450 km/hr bearing N45E. The wind velocity is 30 km/hr in the direction N30W. What is the ground
1. 1 answer
2. asked by VEJ
3. 4,318 views
a sample of Ca3(PO4)2 contains 3.1g phosphorus then the weight of Ca in the sample is ?
1. 1 answer
2. asked by Husen
3. 3,119 views
A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least
1. 3 answers
2. asked by GLEN
3. 3,102 views
A string with a linear density of 0.035 kg/m and a mass of 0.014 kg is clamped at both ends. Under what tension in the string
1. 2 answers
2. asked by Tina
3. 2,737 views
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.Log of 7(p to
1. 1 answer
2. asked by renee
3. 2,276 views
the crucible is not fired, as the procedure suggests, but had retained some impurities from previous use(or it could be oily
1. 2 answers
2. asked by wolfsken
3. 2,198 views
two velocities each 5 ms-1 are inclined to each other at 60 degrees find the resultant
1. 7 answers
2. asked by manish roy
3. 1,931 views
a stone is thrown vertically upward with an initial velocity u from the top of tower, reaches the ground with a velocity 3u.
1. 1 answer
2. asked by pavatharani
3. 1,641 views
Identify the level of measurement for the following? 1)What state/country were you born?2)What is the temperature outside rigth
1. 3 answers
2. asked by mike
3. 1,591 views
A map has a scale of 5cm=20km. If two cities are 17 centimeters apart on the map what is the actual distance between the two
1. 2 answers
2. asked by Anonymous
3. 1,506 views
18.Find the area of the shaded region. Show your work.
1. 2 answers
2. asked by Anonymous
3. 1,502 views
Why are standard solutions of reductants less often used for titrations than solutions of oxidants?
1. 1 answer
2. asked by precious
3. 1,335 views
An unmarked police car traveling a constant 90 km/h is passed by a speeder. Precisely 2.00 s after the speeder passes, the
1. 2 answers
2. asked by victor
3. 1,313 views
Find the vertex of the parabola associated with the quadratic function.f(x)= -1/7x^2 - 2/11x + 1/121 (h,k)= What is the vertex
1. 3 answers
2. asked by John
3. 1,213 views
This is the first paragraph of my essay, how does it look?Imagine being 6’3” in the eighth grade and everyone in the school
1. 2 answers
2. asked by lizzie
3. 1,210 views
A student is running at her top speed of 4.6 m/s to catch a bus, which is stopped at the bus stop. When the student is still a
1. 2 answers
2. asked by Luan
3. 1,205 views
first of all, im an ESL English student so bear with my mistakesI have been an English 101 student for about 3 weeks now, and
1. 5 answers
2. asked by healpmerealquick
3. 1,191 views
The Due Process Clause guarantees that:A. the National Government will not interfere with Constitutional rights. B. states are
1. 5 answers
2. asked by Anthony
3. 1,143 views
Find the slope of the line containing each given pair of points, If the slope is undefined, state this (-1,4) and (5,-8)
1. 1 answer
2. asked by Poochie
3. 1,137 views
Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.)x2 - 5x
1. 1 answer
2. asked by Anonymous
3. 1,135 views
Health systems can be formed through which of the following mechanismsOwnership Not-for-profits For-profits Mergers
1. 3 answers
2. asked by deedee
3. 1,120 views
The major function of Congress:A)is to check the president B)is to inform the people C)is to enact legislation D)is to check the
1. 2 answers
2. asked by Amanda
3. 1,093 views
Some would argue that women are better friends than men. Those people might mention things like women are mothers and my mom is
1. 1 answer
2. asked by Mekilt
3. 1,043 views
300 ml of a 0.5NKOH solution, how can it be neutralized
1. 1 answer
2. asked by willie
3. 1,023 views
Hybrid English course is good but it has also bad sides. If a student is looking for flexible time and busy of work hybrid class
1. 2 answers
2. asked by grammar :(
3. 1,019 views
integrate (e^x-x)^2 dx
1. 1 answer
2. asked by Steff
3. 983 views
You are in a meeting with an international executive at his office. A colleague comes in to talk to him during your appointment
1. 4 answers
2. asked by lachelle mitchell
3. 974 views
During launches, rockets often discard unneeded parts. A certain rocket starts from rest on the launch pad and accelerates
1. 1 answer
2. asked by Kai
3. 951 views
xsquared-4y squared when x=-16 y=17
1. 1 answer
2. asked by kathy
3. 925 views
How much heat is absorbed by a persons hand if 100 grams of steam at 100°C is first converted to liquid water at 100°C and
1. 1 answer
2. asked by Anonymous
3. 904 views
among instances of corparate malfeasance in the early twenty first century, the scandal was the most shocking and economically
1. 2 answers
2. asked by tasha
3. 876 views
(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the
1. 3 answers
2. asked by Jen
3. 869 views
i revised it and found my mistakes.. ignore my conclusion because it's not good i'm going to work on it.I have been an English
1. 3 answers
2. asked by healpmerealquick
3. 853 views
Question:What is the maximum number of liters of HNO3(g) that can be made from 14.88 L of H2O(g) and 10.66 L of NO2(g) at STP? 3
1. 2 answers
2. asked by Bradley
3. 808 views
Please helpf(x) = 3x² + 2 x= 3 my question, do I start by solving x² first then multiply by 3 and adding 2 f(3= 3 * 9 + 2 = 29
1. 2 answers
2. asked by kelly
3. 752 views
60 grams of ethyl alcohol, and 40 grams of H2O form a solution, what are the solute and the solvent
1. 1 answer
2. asked by willie
3. 738 views
Question:A sample of Freon-12 (CF2Cl2) occupies 2.261 x 101 L at 337 K and 2.917 x 102 kPa. Find its volume (in L) at standard
1. 2 answers
2. asked by Bradley
3. 736 views
Solve the equation. Give an exact solution.ln(3x - 2) = ln 2 - ln(x - 1)
1. 1 answer
2. asked by sky
3. 728 views
During a 12-hour period, the tides in one area of the Bay of Fundy cause the water level to rise to 6 m above average sea level
1. 0 answers
2. asked by Sean
3. 727 views
two forces whose magnitude are in the ratio 3:5 give a resultant equal to 35 newton if the angle between them is 60 degrees find
1. 1 answer
2. asked by manish roy
3. 723 views
T_T ok so here's another assignment that should be pass tomorrow. please critique and i need help on how can i close this
1. 2 answers
2. asked by healpmerealquick
3. 716 views
A planet has a mass of 6.06x 10^23 kg and a radius of 3.99 x 10^6 m. a) What is the acceleration due to gravity on this planet?
1. 2 answers
2. asked by Kristi
3. 713 views
A 38.3-kg crate rests on a horizontal floor, and a 74.7 kg person is standing on the crate. Determine the magnitude of the
1. 3 answers
2. asked by Kristi
3. 713 views
The Supreme Court usually only accepts a writ of certiorari when:A. they have a light case load and can take a few extra cases.
1. 3 answers
2. asked by Anthony
3. 709 views
Don't know how to start..Can anyone help me? For this program you are to create a two class application - a driver and a
1. 1 answer
2. asked by Sally
3. 704 views
Individual rights were included in the constitution because:A. Conflicts between individuals and the government remained
1. 3 answers
2. asked by Anthony
3. 694 views
A pair of dice is rolled and the sum of the dice is found. What is the probability of rolling a 7?
1. 2 answers
2. asked by Anonymous
3. 684 views
A car's engine can accelerate a car from rest to 30 m/s in 6 s. if the car's mass is 1300 kg, what is the power of the engine?ca
1. 4 answers
2. asked by Allison
3. 669 views
which one is angle will give the longest range ? 30 degrees ? 45 degrees ? 60 degrees ?
1. 2 answers
2. asked by cj
3. 654 views
My assignment calls for a review of a movie or television show that tells us about the society in which we live. It must address
1. 3 answers
2. asked by HUM176
3. 639 views
calculate the molar mass of an unknown whose mass was 0.846 g, and occupied a volume of 354 cm3 at a pressure of 752 torr and a
1. 1 answer
2. asked by Carla
3. 639 views
Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta.I'm not sure how to properly square
1. 1 answer
2. asked by Joe
3. 630 views
Which of the following solution has greater density?1. 100ml of saturated aqueous solution of Lif. (Ksp(Lif)=1.84*10^-3). 2.
1. 2 answers
2. asked by qwerty
3. 629 views
ok so I'm learning to solve problems likecos(x)=2 and sin(x)=5 I've wrapped my head around the process required to do so and I
1. 3 answers
2. asked by George
3. 618 views
a car accelerates from rest at a constant rate 'a' for some time. after which it decelerates at a constant rate'b' and comes to
1. 2 answers
2. asked by pavatharani
3. 618 views
You have been hired as a consultant by your neighbor to help her with her computer. You notice that she has a screen full of
1. 1 answer
2. asked by sonja
3. 612 views
1.0M FeCl3(H2O)6 IN 2M HCl + 2.0M FeCl2(H2O)4 WHAT ARE THE MAIN CHEMICAL REACTION...
1. 1 answer
2. asked by ra
3. 609 views
a car accelerates from rest at a constant rate 'a' for some time. after which it decelerates at a constant rate'b' and comes to
1. 2 answers
2. asked by pavatharani
3. 601 views
If 16.01 grams of sulfuric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced
1. 1 answer
2. asked by Bradley
3. 589 views
Identify the level of measurement for the following? How long does it take you to drive to the school on average ( to the
1. 1 answer
2. asked by mike
3. 571 views
In 1700, which of the following colonies had the largest slave population relative to its overall population?
1. 2 answers
2. asked by T
3. 563 views
the density of water is 1gm/ml. what is the molarity of 1 drop of water?
1. 1 answer
2. asked by corinna
3. 538 views
if a sample of alloy containing magnesium and metal that doesn't react wtih hydrochloric acid are reacted, how much heat would
1. 1 answer
2. asked by mike
3. 538 views
The highest priority for most members of congress:A)ensuring that the constitutional system of checks and balances works
1. 4 answers
2. asked by Amanda
3. 532 views
Sam gets deposits a total of $3500 every three months to the bank which earns a 6.5% p/a. After five years how much will he have
1. 1 answer
2. asked by Kate
3. 531 views
If u use 4 g of calcium carbonate in excess acid,instead of 2 g.They find that the rate of the reaction increases.why the rate
1. 2 answers
2. asked by Nonhlanganiso
3. 530 views
The text summarizes positive psychology as being aware that humans are both creatures and creators of their personal and social
1. 1 answer
2. asked by maria
3. 530 views
The force of gravity on a 2.0 kg rock is twice as great as on a 1 kg rock. Why doesnt the heavier rock fall faster?
1. 1 answer
2. asked by Capreeca
3. 528 views
60 grams of NaOH, a solid, will dissolve in 40 grams of H2O.what is the solute and solvent for this solution
1. 1 answer
2. asked by willie
3. 528 views
Mr smith flight took off at Vancouver at local time 1335. The flight was bounded for Sydney via hongkong. After 16.5h flight, mr
1. 2 answers
2. asked by StuartKess
3. 522 views
Find the volume of the solid formed by rotating the region enclosed by y=(e^(2x))+4,y=0,x-0,x=0.4.I tried doing this but got
1. 1 answer
2. asked by tony
3. 522 views
Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta.I'm not sure how to properly square
1. 1 answer
2. asked by Joe
3. 520 views
Can you please help me express the following concepts in English? Check the word choice, please.1) My mother wanted to make a
1. 1 answer
2. asked by Henry2
3. 519 views
the molarity of a solution containing 40 grams of NaOH in 100 ml of solution is
1. 2 answers
2. asked by willie
3. 515 views
find the value of C such that the graph of 3x+C=5y has an X- intercept of (-4,0).
1. 2 answers
2. asked by Poochie
3. 507 views
jack brought 3 items that cost 25 dollars each, and five items that cost 40 dollars each. what was the total cost, including 5%
1. 1 answer
2. asked by susan
3. 505 views
If a buffer is prepared using equal amounts of acetic acid and sodium acetate predict what the pH of the solution will be.
1. 1 answer
2. asked by Michael
3. 501 views
At STP, 461 mL of a gas have a mass of 1.88 g. What is the molar mass of the gas?
1. 1 answer
2. asked by Bradley
3. 498 views
a body travels half of its total path in the last second of its free fall from rest.what is the duration of fall?
1. 1 answer
2. asked by pavatharani
3. 498 views
Verify that each trigonometric equation is an identity tan^2+1/sec Î± =sec Î±
1. 1 answer
2. asked by maria
3. 495 views
what is the moment where boo radley and miss maudie BRING at reaction from Scout?? i Don't get the questions !!do we have to
1. 1 answer
2. asked by kim
3. 488 views
how about if the raduis of right circular cone is given and the surface area is given what is the formula? help please?
1. 1 answer
2. asked by jazz
3. 480 views
Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are
1. 1 answer
2. asked by tina
3. 470 views
As a rocket accelerates upward, its thrust remains constant but its acceleration increases. what is the cause of this?
1. 2 answers
2. asked by Capreeca
3. 466 views
Here is my first paragraph of my essay:Imagine being 6’3” in the eighth grade and everyone in the school making comments
1. 2 answers
2. asked by lizzie
3. 464 views
How many grams of NaCl are neeeded to make 100ml of a 2M solution of NaCl
1. 1 answer
2. asked by corinna
3. 456 views
3x/4-21x/32= -1 1/8
1. 3 answers
2. asked by Anonymous
3. 453 views
one interior angle of a pentagon has a measure of 120 degree. the other four interior angles are congruent to each other. What
1. 1 answer
2. asked by Anonymous
3. 453 views
This is what my teacher gave us I guess he want us to figture out the question.cost/mile 0.08 normal distribution means=.08
1. 0 answers
2. asked by elizabeth6
3. 452 views
i don't know what to do on this one.my teacher told that i need to get the readers attention again back to my thesis which is
1. 3 answers
2. asked by won sho han
3. 452 views
What happens when SO2 gas is mixed with burning Oxy-Acetylene gas
1. 0 answers
2. asked by Gene
3. 448 views
Solve the equation. If necessary, round to thousandths.3^(2x + 1) = 27
1. 2 answers
2. asked by sky
3. 445 views
A solution contains 153g Na3PO4 and 415g H2O. What is the percentage concentration of Na3PO4 in this solution
1. 1 answer
2. asked by wj
3. 444 views
Find the range of the data set.{11.3, 7.3, 8.8, 6.4, 9.2} Highest 11.3 lowest 6.4 11.3-6.4 = 4.9 Answer: 4.9 Right?
1. 2 answers
2. asked by candy
3. 443 views
Why do Alkali Metals & Alkaline Earth Metals have so much difference in their properties?
1. 1 answer
2. asked by Gilda
3. 443 views
Construct a truth table for (p ^ q) ↔ ~p
1. 1 answer
2. asked by Jen
3. 441 views
In Jefferson's view, George Washington's action in addressing the Whiskey Rebellion
1. 1 answer
2. asked by T
3. 438 views

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