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Questions (206)

A 0.016076-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter
1. 1 answer
2. 745 views
A sample of gas is compressed from 13.57 L to 3.93 L using a constant external pressure of 2.91 atm. At the same time, 1,759 J
1. 1 answer
2. 793 views
A 0.016076-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter
1. 0 answers
2. 766 views
The enthalpy change for the reaction below at 25oC is -2,051 kJ (per mole of C10H22). What is the internal energy change for the
1. 2 answers
2. 542 views
The standard enthalpy of combustion of C2H6O(l) is -1,367 kJ mol-1 at 298 K. What is the standard enthalpy of formation of
1. 1 answer
2. 4,520 views
Given the following thermochemical equations,NO(g) + (1/2) Cl2(g) --> NOCl(g) -37.78 kJ (per mol NOCl) NO(g) + (1/2) O2(g) -->
1. 0 answers
2. 605 views
When a 6.79-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 369 kJ of heat is liberated.
1. 1 answer
2. 837 views
What is w when 1.27 kg of H2O(l), initially at 25.0oC, is converted into water vapour at 133oC against a constant external
1. 1 answer
2. 717 views
Hello, a few questions: Thanks so much!1. The heat capacities of titanium and water are 0.522 J g-1 K-1 and 4.184 J g-1 K-1,
1. 4 answers
2. 866 views
A 33.0-L cylinder contains 481 g O2(g) at 22.5°C. What mass of O2(g) must be released to reduce the pressure in the cylinder to
1. 2 answers
2. 444 views
whats the uses of the element mercury?
1. 1 answer
2. 450 views
WA -10.0 nC point charge and a +20.0 nC point charge are 15.0cm apart on the x-axis.hat is the electric potential at the point
1. 1 answer
2. 1,781 views
Tell whether each of the following is true for all sets A, B, or C. If false, give a counterexample.?a. A-B=A- ∅ b. (A �¾B)
1. 0 answers
2. 1,247 views
order these fraction from least to greatest 3/4,-2/3,7/10,-5/6
1. 1 answer
2. 416 views
An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together
1. 1 answer
2. 978 views
rule=input3 output 2 input 6 output3 input 9 output4 input 12 output 5
1. 1 answer
2. 353 views
at this rate how many minivans would pass luann if 60 vehicles passed her? HINT; minivans= 15
1. 6 answers
2. 975 views
A woman walks due west on the deck of a ship at 4 mi/h. The ship is moving north at a speed of 15 mi/h. Find the speed and
1. 0 answers
2. 772 views
calculate the volume occupied by 10^22 molecules of a gas 300 k and 760 mm pressure.please help me please...................
1. 2 answers
2. 4,162 views
a ladder is leaning up against a wall. The ladder is 8 feet long and is 3 feet away from the base of the wall. find the angle
1. 1 answer
2. 837 views
what is A=____,b=8.1 mm,h=16mm
1. 1 answer
2. 358 views
over 8 months,the value of Alana's investments dropped a total of $56. What integer value represents the average monthly change
1. 0 answers
2. 405 views
An electric motor lifts an elevator 1.1 m in 13.0 s by exerting an upward force of 7.80 x 104 N. What power does the motor
1. 1 answer
2. 483 views
True or false? Explain, all multiples of 3 are composite
1. 1 answer
2. 432 views
object is oblong measure's 16" round and tapers and is 21" round at wides whats the volume???
1. 1 answer
2. 310 views
a teacher requests that a child use a small stepladder to reach a book on a shelf she is helping the child developa)primitive
1. 2 answers
2. 534 views
a childs ability to jump for distance is an example ofa)agility b)flexibility c)explosive power d)reaction time i put b am i
1. 1 answer
2. 1,212 views
need a word with 5 letters, 3rd letter is a "g" the riddle is "amazing tricks that seem real"
1. 4 answers
2. 442 views
looking for help with apostrohe catastrophe in the followingit is, use_________. if not,use_______ there is, use______. if
1. 4 answers
2. 471 views
looking for antonym for "all" needs to be seven letters the 6th letter is an "n"
1. 1 answer
2. 340 views
what is 8+10+2/12+4/9 in lowest term if possible
1. 1 answer
2. 369 views
how many milliliters of hydrogen at 0 degree C and 1400 mmhg are produced if 15g of magnesium reacts with sulfuric acid?
1. 2 answers
2. 711 views
you must prepare 300 mL of .750M NaBr solution using 2M NaBr stock solustion. how many mL of stock solution should you use?
1. 1 answer
2. 747 views
Is the saying "an apple a day keeps the doctor away" true?
1. 1 answer
2. 635 views
determine the molar concentration of Ca^2+ and Cl- in a .075 M CaCl2 solution
1. 0 answers
2. 484 views
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 142-kg laser sensor that measures the
1. 0 answers
2. 583 views
if an astraunout could jump 40 cm on jupiter how high could he ir she jump on earth how about the moon also????? pleese help me
1. 0 answers
2. 577 views
Lyla deposited $250 in an account earning 4% simple interest. At the end on one year, how much was in the account, assuming no
1. 5 answers
2. 602 views
what multiplication fact could you use to find a number that can be divided evenly by 8 and by 9
1. 5 answers
2. 1,542 views
Write a balanced chemical equation for the reaction for propane C3H8 burning in oxygen to for carbon dioxide and water vapor
1. 1 answer
2. 1,589 views
A place or object used for comparion to determine whether something is in motion is called what?
1. 1 answer
2. 769 views
information about landform
1. 1 answer
2. 460 views
a bicycle rider left town at noon at traveled at a uniform rate of 15 miles an hour. at 2 pm the same day, a motorcycle rider
1. 1 answer
2. 700 views
i have this quetion and answer thing and i am having troubles with the meanings can anyone help me?
1. 1 answer
2. 380 views
shoud i add a predicate or a subject to this sentence this baseball team.
1. 1 answer
2. 1,004 views
Predict the effect of each of the following on the indicated equilibrium system in terms of which reaction will be favored
1. 1 answer
2. 1,580 views
List 3 components of the environmentBriefly describe the major pollutant in each category and their effect on health Explain how
1. 2 answers
2. 644 views
List 3 components of the environmentBriefly describe the major pollutant in each category and their effect on health Explain how
1. 1 answer
2. 586 views
what is the formula for finding a percentage of a dollar amount???ex. 30 % of 233 is ??? Please help me! Thanks!
1. 2 answers
2. 389 views
Use the given vector to find a vector b such that compab = 4.a = ‹4, 0, 1› ‹s, t, >
1. 1 answer
2. 1,291 views
At what points does the helix r = sin(t), cos(t), t intersect the sphere x^2 + y^ 2 + z^2 = 26?(Round your answers to three
1. 1 answer
2. 2,106 views
An oscillator with a mass of 520 g and a period of1.2 s has an amplitude that decreases by 2.20% during each complete
1. 3 answers
2. 769 views
You pull a simple pendulum of length 0.237m to the side through an angle of 3.50 degrees and release it.How much time does it
1. 2 answers
2. 2,963 views
The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10
1. 1 answer
2. 2,593 views
I am doing a project on Percy Jackson and the Olympians: The Lightning Thief. I need to five 5 Hero's Journey Archetypes, but i
1. 4 answers
2. 350 views
Elsie is starting a recycling club at her school and hopes to use the money earned from recycling cans to buy recycling bins for
1. 2 answers
2. 1,365 views
The recycling center pays 25 cents per kg for aluminum cans. If her school recycles 2070 cans each day, how much money will
1. 1 answer
2. 1,197 views
What organ receives pancreatic juices? What organ absorbs water and what organ, in animals, helps digest cellulose?? Please help
1. 0 answers
2. 1,233 views
2/5 of 40What is the formula to find this????
1. 2 answers
2. 217 views
a bank teller had $2750 in 10 dollar bills and5 dollar bills he had twice as many10 dollar billsas 5 dollar bills how many of
1. 1 answer
2. 743 views
what are two actions outlawed by the english bill of rights?
1. 0 answers
2. 530 views
according the the english bill of rights, how is freedom of speech protected?
1. 2 answers
2. 547 views
Over the past two weeks, Jane earned $292 and $193 respectively, at her part time job. What must she earn in the third week to
1. 1 answer
2. 603 views
true or false if false why hindus believe that souls are born and reborn many times each time into a new body which is a process
1. 3 answers
2. 767 views
Why were American political leaders so interested in the Pacific islands in the late 1800's?
1. 1 answer
2. 419 views
in the lab of reaction with coppercopper is suppose to loose mass because it oxidates. its that right or does it gain mass
1. 0 answers
2. 342 views
when heated in the presence of air, 80 grms. of copper completely react to form 100 grms. of copper oxidewhat is the mass of
1. 0 answers
2. 588 views
ok figure 1 has one block figure 2 has 5 block and figure 3 has 9 block whats the pattern
1. 4 answers
2. 486 views
how did the lives of slaves differ from those of the free in the united states
1. 1 answer
2. 862 views
how did the lives of slaves differ from those of the free in the united states
1. 0 answers
2. 369 views
what is the proclamation?
1. 2 answers
2. 342 views
last weekend,alans basketball team played in a tournament. alan scored 1/5of the teams points,his friend jake scored 30% of the
1. 2 answers
2. 439 views
bobpursley, I am confused to the equations that you have just posted. However, this is what I figured out but I'm not if it's
1. 1 answer
2. 463 views
susan is buying three different colors of tiles for her kicthen floor. she is buying 25 more red tiles than beige tiles , and
1. 2 answers
2. 865 views
-60rs/204rs Simplify
1. 1 answer
2. 279 views
how would you solve for x: (e^(x)+e(-x)/2)=3
1. 1 answer
2. 279 views
i have to unscrammble this word. the letters areeihmlyebt the question that comes with it is if this sign is on my dressing room
1. 0 answers
2. 608 views
what is a symbol used in writing?
1. 3 answers
2. 934 views
The problem states that I have to come up with best possible predictor of a 100yr flood plan. Well I found that best projection
1. 1 answer
2. 503 views
what kind of volcanoes are found in Iceland?Chile and Argentina? The Arabian Peninsula and the Middle East? thanks
1. 1 answer
2. 478 views
what dose the n stand for inthe math question 54-n=24
1. 1 answer
2. 413 views
what dose the n stand for in the math question 54-n=24
1. 1 answer
2. 389 views
what are the indivdual right of a citzen under law called
1. 1 answer
2. 352 views
what is a word that means the same as nation goverment
1. 1 answer
2. 409 views
where is the united states federal goverment located
1. 2 answers
2. 558 views
i found most of the info. on foot binding but still am unsure about a couple.was this mainly practiced in the sung dynast in the
1. 1 answer
2. 462 views
pronoun reference agreement?David lent his motorcycle to someone who allowed their friend to use it.
1. 2 answers
2. 1,693 views
pronoun agreement?By the final curtain, ninety percent of the audience had voted with their feet.
1. 4 answers
2. 548 views
does generation and tradition have either assonance or consonance or neither?
1. 1 answer
2. 491 views
The Binary Ice Cream Shoppe sells two flavors, vanilla and chocolate. On Friday, the ratio of vanilla cones sold to chocolate
1. 1 answer
2. 1,682 views
how do you do standard from linear equations
1. 1 answer
2. 311 views
last of the homework packet questions hopefully!These questions are the ones I had the most trouble on. I have a feeling I
1. 1 answer
2. 563 views
Got a question3. Given 325 ml of saturated gas at 760 mmHg and 25°C, what would be its volume if dry at the same pressure and
1. 1 answer
2. 668 views
I have a packet of homework so I think I may post other questions that I'm stuck on later this weekend. So that's a heads up.Thi
1. 4 answers
2. 1,049 views
how would I define "infection vs colonization"?Infection is the growth of a parasitic organism within the body colonization is
1. 1 answer
2. 421 views
yeah its me again :) and thank you Writeacher for checking my answer on smokingAn antihistamine used to treat a common cold is
1. 1 answer
2. 400 views
What is the purpose of nicotine replacement therapy?A. To reduce the number of cigarettes smoked B. To reduce the food cravings
1. 2 answers
2. 693 views
can someone tell me how to cite a source like this: Asthma and sinusitis solutions have been recognized in the years past by the
1. 3 answers
2. 498 views
I have to write a paper for my bio class and the teacher is giving us alot of freedom on it.Its a research paper on many topics
1. 1 answer
2. 563 views
What is the density of helium?Where can I find that info?
1. 3 answers
2. 478 views

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