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Questions Asked on May 21, 2010

How much heat is required to raise the temperature of 250.0 g of mercury 52ºC? The specific heat of mercury is 0.14 J/(gºC).
1. 7 answers
2. asked by Meg Hat
3. 11,756 views
A chunk of silver has a heat capacity of 42.8 J for 1ºC and a mass of 181g. Calculate the specific heat of silver.
1. 7 answers
2. asked by Meg Hat
3. 10,093 views
What type of intermolecular forces would you expect to find between molecules of H2O? of BrCl? of hexane (C6H14)?
1. 2 answers
2. asked by Ariana
3. 6,822 views
Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of
1. 3 answers
2. asked by Physics
3. 4,979 views
I am one of the United States' most famous attractions. I am 279 milies (449 km) long and 1 mile (1.6 km) deep. People come from
1. 18 answers
2. asked by Precious
3. 3,809 views
Design a program in pseudocode that calculates the amount of money a person would earn over a period of time if their salary is
1. 2 answers
2. asked by Ant
3. 3,181 views
(True or False) Wax is nonpolar, yet it exists as a solid at room temperature. Its solidity is best explained by the presence of
1. 3 answers
2. asked by Ariana
3. 2,712 views
Which of the following mixtures will be a buffer when dissolved in a liter of water?a. 0.1 mol Ca(OH)2 and 0.3 mol HI b. 0.3 mol
1. 1 answer
2. asked by George2
3. 2,698 views
A standard deck of cards is shuffled and one card is drawn. Find the probability that the card is red or a jack.
1. 1 answer
2. asked by NatoshaMarie
3. 2,651 views
Which half-reaction represents reduction?Choose one answer. a. Cu → Cu^+2 + 2e- b. Fe^+2 → Fe^+3 + 1e- c. Ag^+1 + 1e- → Ag
1. 2 answers
2. asked by Tim
3. 2,599 views
-Suppose K= 4.5x10^-3 at a certain temperature for the reaction :PCl5 <--> PCl3+ Cl3, what must be the concentration of Cl2
1. 6 answers
2. asked by Ashley
3. 2,508 views
your electronics friend needs a 20-ohm resistor but has only 40-ohm resistors. He tells you that he can combine them to produce
1. 1 answer
2. asked by Meg
3. 2,219 views
Which of the following refers to when a researcher gathers data from a sample and uses the statistics generated to reach
1. 2 answers
2. asked by Thara!
3. 2,187 views
a particle of mass 0.3kg vibrates with a period of 2 sec. if its amplitude is 0.5m what is its maximum kinetic energy
1. 2 answers
2. asked by onda
3. 2,110 views
a mass of gas emitted from the rear of toy rocket is initially 0.2kg/s. if the speed of the gas relative to the rocket is 40m/s
1. 4 answers
2. asked by onda
3. 1,993 views
A father swings his child around in a circle. The source of the centripetal force that keeps the child moving in a circle is
1. 4 answers
2. asked by Jessica
3. 1,942 views
one side of a triangle is 2cm shorter than the base The ofther side is 3cm longer than the base what lengths of the base will
1. 2 answers
2. asked by Sulynn
3. 1,597 views
a piece of gold aluminuim alloy weighs 100g in air and 80g in water.what is the weight of the gold in the alloy if the relative
1. 3 answers
2. asked by onda
3. 1,551 views
A weather balloon at Earth's surface has a volume of 4.00 L at 304 K and 755 mm Hg.?If the balloon is released and the volume
1. 2 answers
2. asked by Jake
3. 1,531 views
A person takes about 20 breaths per minute with 0.5 litre of air in each breath. How much heat is removed per hour by the
1. 1 answer
2. asked by Victor
3. 1,510 views
Which level of data has an absolute zero?A) nominal B) ratio C) ordinal D) interval IS IT (B)
1. 2 answers
2. asked by Thara!
3. 1,466 views
a coin placed on a disc rotates with speed of 33 1/3 rev. per minute provided that the coin is no more than 10 cm from the axis
1. 4 answers
2. asked by onda
3. 1,431 views
use technology to find the P-value for a right-tailed test with n=21 and test statistic t=2.065apparently, i don't have a stat
1. 3 answers
2. asked by shasha
3. 1,421 views
How are the three types of intermolecular forces similar? How are they different?
1. 1 answer
2. asked by Ariana
3. 1,412 views
A researcher is hired by a company to ascertain the morale of company employees. The company employs over 10,000 employees. The
1. 5 answers
2. asked by Thara!
3. 1,391 views
Rationalize the denominator. Assume that all expressions under radicals represent positive numbers.The square root of 3y^4 to
1. 0 answers
2. asked by B.B.
3. 1,351 views
Simplify by taking roots of the numerator and the demoninator. Assume that all expressions under radicals represent positive
1. 2 answers
2. asked by B.B.
3. 1,331 views
Which should be used a permutation or combination?Determine the number of different ways in which a committee of four can be
1. 1 answer
2. asked by CB
3. 1,263 views
1. How many joules of energy must be absorbed to raise the temperature of 20 grams of water from 25°C to 30°C?
1. 2 answers
2. asked by ana
3. 1,249 views
You roll a red die and a green die. Find the probability of rolling a four on the red die and a three on the green die.
1. 4 answers
2. asked by Thomas
3. 1,145 views
The mean and standard deviation of a set of data are two measurments that describe the data. A certain student has written 8 out
1. 1 answer
2. asked by Leigh
3. 1,121 views
check if the capitalized word is correctPARTICIPLES AND GERUNDS 1. americans have many different ways of CELEBRATING holidays.
1. 1 answer
2. asked by Sara!
3. 1,102 views
A company manufactures bicycles in 8 different styles. Each style comes in 7 different colors. How many different bicycles does
1. 2 answers
2. asked by Ariel
3. 1,077 views
describe how something is learned using classical conditioning. Be sure to identify the unconditioned stimulus, the conditioned
1. 3 answers
2. asked by Amber
3. 1,053 views
a 75.0 pF capacitor is connected to a 12V battery. How much charge is on each plate?
1. 1 answer
2. asked by Anonymous
3. 1,019 views
For how many kilojoules are required to change 44.0g of ice at -12.0 degrees C to water at 85.0 degrees C?Would this be correct:
1. 1 answer
2. asked by Anonymous
3. 1,003 views
An equilibrium mixture contains N2O4, (P= 0.30 ) and NO2 (P= 1.1 ) at 350 K. The volume of the container is doubled at constant
1. 3 answers
2. asked by Anonymous
3. 979 views
Which one of the following lines best illustrates personification?A. A narrow wind complains all day. B. The fog comes on little
1. 3 answers
2. asked by Anonymous
3. 942 views
Using the formula: w=Cr^-2 where C is a constant, and r is the distance that the object is from the center of Earth. W is the
1. 3 answers
2. asked by Teri
3. 927 views
Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find
1. 3 answers
2. asked by JOHNNY
3. 911 views
List the characters in the story. Write one to two sentences on the defining characteristics of each one, providing at least one
1. 0 answers
2. asked by Chelsea
3. 891 views
I'm doing a Spanish assignment but theres no need for any spanish words, so i'll call it an English paper. I'm doing a research
1. 2 answers
2. asked by Danii
3. 878 views
An elevator cab in the New York Marriott Marquis has a mass of 4.96 x 103 kg and can carry a maximum load of 1.80 x 103 kg. If
1. 1 answer
2. asked by jack
3. 873 views
A researcher studies the effectiveness of managers at a small company containing 46 employees. The researcher interviews every
1. 1 answer
2. asked by Thara!
3. 839 views
The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag.
1. 2 answers
2. asked by Thomas
3. 839 views
Find three additional polar representation of the point (-3, pie over 6) given in polar coordinates,using -2 pie <0 <2pie.
1. 1 answer
2. asked by Sasha
3. 838 views
find the power of an engine in kilowatts which pulls a train of mass 600 tonnes up an incline of 1 in 100 at the rate of 60 km
1. 1 answer
2. asked by onda
3. 830 views
A long string carries a wave; a 5.40-m segment of the string contains three complete wavelengths and has a mass of 180 g. The
1. 2 answers
2. asked by pam
3. 823 views
;A; Help writing a "topic sentence" about the dominican republic food?&& iwould need help on more of my essay .__. unfortunately
1. 14 answers
2. asked by Danii
3. 782 views
Can anyone show me how to balance:Ce+4 +H3AsO3 ==> Ce+3 + H3AsO4 using the half-reaction method?
1. 2 answers
2. asked by Chris Pike
3. 751 views
Find the area between y=cosx and y=sinx from 0 to 2pi.To find the zeros, I combined the equations cosx-sinx=0 What's next?
1. 3 answers
2. asked by sh
3. 750 views
iNeed help getting a 200 word essay done TONIGHT.I'll be away from the computer for about ten minutes because ihave to pick up
1. 20 answers
2. asked by Danii
3. 743 views
1. In a survey of a TriDelta chapter with 46 members, 13 were taking mathematics, 33 were taking English, and 6 were taking
1. 3 answers
2. asked by bill
3. 724 views
Writing is a very important component of online learning. College-level writing is more formal most of your daily writing.
1. 3 answers
2. asked by Anonymous
3. 723 views
For each body system, identify which body approach(es) might best be used to organize information. Choose only from the
1. 0 answers
2. asked by chris
3. 694 views
ABCD is a square with area =625 in square. The circumfrence centered in circle is circunscribed by ABCD. Find the approximately
1. 1 answer
2. asked by Sonia
3. 691 views
I posted this early, I don't understand the answer, Two angles are complementary. The sum of the measure of the first angle and
1. 1 answer
2. asked by Johnny
3. 683 views
How do you solve this math problem?h= -8t^2+40t then it says: when t=0 and when t= 5 there are 2 questions that i have to
1. 1 answer
2. asked by Rachel
3. 672 views
I posted this early, I don't understand, Two angles are complementary. The sum of the measure of the first angle and one-fourth
1. 1 answer
2. asked by TIM
3. 666 views
(1)A motorist is traveling at 15 m/s when he seesa deer in the road 44 m ahead. If the maximum negative acceleration of the
1. 1 answer
2. asked by oh you know
3. 660 views
I will deposit $1000 per year for 25 years.� Assuming a 5% compound interest rate, what will my account be worth in 25 years?
1. 1 answer
2. asked by kathy
3. 650 views
Round 1,643,253 to the nearest hundred thousand. I say it's 1,600,000 but the workbook says 1,700,000. Please explain.
1. 3 answers
2. asked by Aaron
3. 647 views
Could someone please help me with this math problem? This is what I have so far but now I am stumped as to what to do next.Multi
1. 1 answer
2. asked by B.B.
3. 641 views
are this sentences GERUNDS1. in almost every american town, holding parades on the 4th of july is a tradition. ( IF its a gerund
1. 2 answers
2. asked by Sara!
3. 629 views
A 0.077-kg arrow is fired horizontally. The bowstring exerts an average force of 50 N on the arrow over a distance of 0.75 m.
1. 1 answer
2. asked by jack
3. 621 views
Hello. Can someone check my answers to the followingFactor each of the following 1. a^2 - 9 My answer a^2 - 9 = 0 (a - 3)a + 3)
1. 1 answer
2. asked by Tamir
3. 603 views
Every night before closing, the night manager counts the amount of money in the cash register. The amount of money in the cash
1. 1 answer
2. asked by Thara!
3. 592 views
Imagine that you are a business owner Choose whether to hire a new person in the marketing department or upgrade your computer
1. 1 answer
2. asked by Anonymous
3. 586 views
Can't figure this one out....how do you balance MnO4- + SO3-2 ====> SO4-2 + Mn+2?
1. 1 answer
2. asked by Jake
3. 577 views
Okay, so i've got 8 reactions i am supposed to balance "according to the half-reaction method". Only problem is, i was gone for
1. 1 answer
2. asked by Nessy
3. 575 views
check if the capitalized word is correctPARTICIPLES AND GERUNDS 1.SINGING songs such as "auld lang syne", people say good bye to
1. 1 answer
2. asked by Sara!
3. 562 views
No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most
1. 1 answer
2. asked by rose
3. 562 views
solve 4y + 10 = 46
1. 1 answer
2. asked by cathy
3. 554 views
can you help me with my 3-d top map construction project of a pear island.I would like you to explain to me step by step on how
1. 5 answers
2. asked by Ted
3. 550 views
solve the equation 2 sec x- tan x = cot x for the interval 0 to 360 please:)
1. 1 answer
2. asked by HELPPPP
3. 547 views
There are twenty songs from which a disc jockey can chose five to play on her program. How many different arrangements of songs
1. 1 answer
2. asked by Thomas
3. 542 views
I am looking for the answer to this assignment. I am not an accounting major and have no clue. Please help Assignment Name: Unit
1. 0 answers
2. asked by Terill
3. 541 views
Website For Grammar Lessons 6th grade????....
1. 2 answers
2. asked by Alina
3. 539 views
in this sentence is the verb losing used as main verb or gerund as direct object?they are definitely LOSING that game!
1. 1 answer
2. asked by Sara!
3. 534 views
Imagine that you have to make a presentation on your MBA project to a group of your professors and industry experts. Prepare the
1. 0 answers
2. asked by haleema
3. 532 views
what is the formula of a compuond formed by combining 50g. of element X and 32 g. of oxygen
1. 0 answers
2. asked by Kaila
3. 526 views
Discuss the different developmental eras of American education. How did the philosophies and practices of those eras scaffold
1. 2 answers
2. asked by Anonymous
3. 522 views
Let x = 10, y = 4, z = 2, and evaluate the following.x − y + z =
1. 9 answers
2. asked by Aswat
3. 514 views
How does the merchandise displayed in toy stores reflect the issues of race, gender, and class?
1. 1 answer
2. asked by Jill
3. 513 views
find, to the nearest minute, the solution set of 1- sin x = 3 cos^2 x over the domain 0 degrees to 360 degrees
1. 1 answer
2. asked by HELPPPP
3. 506 views
Determine triangle H when 10g of HN3 are reacted in the following reaction:4HN3 + 2NO2 arrow pointing > 2H202 + 7N2 (note:
1. 1 answer
2. asked by Anonymous
3. 499 views
Is the world polarized used correctly:The issue of imperialism polarized the Americans during the late 19th and early 20th
1. 1 answer
2. asked by Anonymous
3. 493 views
I am not sure how to multiply and simplify this problem:Sqrt 50 * Sqrt 54
1. 4 answers
2. asked by Kat
3. 482 views
A cellular phone company offers a a contract for which the cost C, in dollars, of t minutes of telephoning is given by
1. 1 answer
2. asked by TIM
3. 478 views
In how many different ways can you roll doubles in a monopoly game when you use two die?Please check my answer = 6
1. 1 answer
2. asked by CB
3. 476 views
Is this code right?Declare Integer days, counter = 1 Declare Real penny = 1, salary, total = 0 Display "Enter a number of days."
1. 0 answers
2. asked by Anon
3. 473 views
As we age, our physical functioning deteriorates. This is most likely due to reduced efficiency in basic cellular processes. One
1. 1 answer
2. asked by angie
3. 473 views
A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of
1. 2 answers
2. asked by Thomas
3. 471 views
How are computers and software aplications utilized in a bussiness setting to solve bussiness problems?
1. 1 answer
2. asked by JJ
3. 467 views
After completing the required readings for this week, discuss how you see the theme of creating art developing in the different
1. 1 answer
2. asked by Anonymous
3. 463 views
Can you please tell me if the following senences are possible?1)I'm always stricter than him (or than he is) when evaluating the
1. 1 answer
2. asked by Franco
3. 462 views
HELP ! I just don't get this. The perimeter of a rectangle is 40 m. The length is 5m more than twice the width. Find the
1. 1 answer
2. asked by JOHNNY
3. 462 views
The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he
1. 1 answer
2. asked by CB
3. 461 views
wat influence does culture have on personality?
1. 1 answer
2. asked by sally
3. 456 views
A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of
1. 3 answers
2. asked by CB
3. 455 views

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