Archives
2014
June

Questions Asked on June 18, 2014

Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 × 10-7
1. 2 answers
2. asked by Veronica
3. 12,052 views
The probability that a randomly selected individual in a country earns more than 75,000 per is 10.5%. the probability that a
1. 2 answers
2. asked by carol
3. 5,718 views
From the following data at 25°C,H2(g) + Cl2(g) → 2HCl(g) ΔH0 = −185 kJ 2H2(g) + O2(g) → 2H2O(g) ΔH0 = −483.7 kJ
1. 3 answers
2. asked by walter
3. 5,289 views
A 50.0 mL solution of 1.2 M HCl at 24.1C is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1C, in a coffee-cup calorimeter. After
1. 3 answers
2. asked by jesse
3. 4,419 views
Suppose that E and F are two events P(E and F)=0.1 and P(E)=0.4 what is P(F/E)?
1. 2 answers
2. asked by carol
3. 4,317 views
A gas occupies 210 mL at -73°C. To have the same gas occupy 360 mL:Should the temperature be increased or decreased? What is
1. 3 answers
2. asked by ginger
3. 4,282 views
When Truman used the phrase "alternate ways of life," what two ways of life was he talking about? This is from my book:"At the
1. 2 answers
2. asked by Tina
3. 4,093 views
Find the 12th term of the arithmetic sequence 2, 6, 10, … .
1. 3 answers
2. asked by Annika
3. 3,863 views
indium(atomic wt.= 114.82 u ) has two naturally occuring isotopes, the predominant one from has isotopic wt. 114.9041 and
1. 4 answers
2. asked by veer
3. 3,276 views
If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water and the calorimeter
1. 1 answer
2. asked by Anonymous
3. 3,019 views
the atmospheric pressure on mars is 0.61 kPa. what is the pressure in mm of Hg?
1. 4 answers
2. asked by veer
3. 2,864 views
Find the probability of P(E or F) if E and F are mutually exclusive P(E)=0.25 and P(F)=0.47
1. 3 answers
2. asked by carol
3. 2,781 views
Suppose every student in your class got a score of 85% on an exam. What are the mean and standard deviation of those exam scores
1. 2 answers
2. asked by Tiffany
3. 2,585 views
on chemical scale, the relative mass of the isotopic mixture of x atoms (x^20,x^21,x^22) is approximately equal to:(x^20 has 99
1. 4 answers
2. asked by veer
3. 2,581 views
A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid,
1. 1 answer
2. asked by Veronica
3. 2,526 views
I need a thesis sentence for online dating and traditional dating for a compare and contrast essay
1. 7 answers
2. asked by LANA
3. 2,112 views
an open box is to be formed out of a rectangular piece of cardboard whose length is 8 cm longer than its width to form the box,a
1. 2 answers
2. asked by kenneth
3. 2,019 views
Four coins fall onto the floor. Find the probability that(a) exactly three coins land heads up (b) all coins land tails up (c)
1. 3 answers
2. asked by Shelagh
3. 1,764 views
in the proportion 2/8=8/32, which numbers is the geometric mean of the other two numbers?
1. 1 answer
2. asked by alice
3. 1,732 views
How much energy (in kilojoules) is released when 13.3g of steam at 114.5∘C is condensed to give liquid water at 67.0∘C? The
1. 2 answers
2. asked by Jess
3. 1,728 views
remove the irrationality in the denominator(i) 1/1+√2+√3
1. 5 answers
2. asked by tanvir
3. 1,728 views
Why is respiration an exothermic reaction?
1. 2 answers
2. asked by josie
3. 1,691 views
The entire can needs to be painted, including the top and bottom. If the diameter of the lid (x) is 5 cm, and the height of the
1. 2 answers
2. asked by Rebecca
3. 1,623 views
choose from: benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant.Believing he was better than
1. 1 answer
2. asked by Linda
3. 1,614 views
A STATE LOTTERY IS DESIGNED SO THAT A PLAYER CHOOSES FIVE NUMBERS FROM 1 TO 30 ON ONE LOTTERY TICKET. WHAT IS THE PROBABILITY
1. 1 answer
2. asked by JOHN
3. 1,450 views
"To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time
1. 3 answers
2. asked by Em
3. 1,430 views
At this year's State Fair, there was a dice rolling game. If you rolled two dice and got a sum of 2 or 12, you won $20. If you
1. 1 answer
2. asked by Shelagh
3. 1,323 views
A rifle bullet with a mass of 16.5 g traveling toward the right at 285 m/s strikes a large bag of sand and penetrates it to a
1. 1 answer
2. asked by Sara
3. 1,293 views
A person runs 800. m at an average speed of 6.00 m/s and then the next 800. m at an average speed of 8.00 m/s.Calculate (a) the
1. 1 answer
2. asked by Jade
3. 1,284 views
I am a decimal between 2 and 3. The digit in my thousandths place is the sum of the digits in my tenths and hundredths place.
1. 5 answers
2. asked by jude
3. 1,268 views
1. Nitric acid is produced via the following equation: 3 NO2 + H2O = 2HNO3 + NO. How many grams of NO2 are required to produce
1. 2 answers
2. asked by Brett
3. 1,239 views
the atomic wt. of two elements A and B are 40 u and 80 u respectively. if x g of A contains y atoms, how many atoms are present
1. 1 answer
2. asked by veer
3. 1,235 views
Carlo drives his car for a picnic by first going 105 km north to pick up his girlfriend and then 120.0 km east to reach the
1. 1 answer
2. asked by Piper
3. 1,212 views
A person of mass 83.8 kg escapes from a burn- ing building by jumping from a window situ- ated 25 m above a catching net.The
1. 2 answers
2. asked by Kirbi
3. 1,199 views
In an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot.
1. 1 answer
2. asked by josie
3. 1,193 views
Which sentence has an infinitive phrase that functions as the subject?To convert sunlight and energy into food is the end result
1. 3 answers
2. asked by happy
3. 1,186 views
Hi, I needed help with this improper integral.lower limit : 2 upper limit : infinity integral of (lnx)/(x+1) dx Thank You so
1. 1 answer
2. asked by Bradley
3. 1,183 views
I was (hardy,indisposed) to accept the halfhearted invitation that reached me only a day before the partyANS - indisposed
1. 1 answer
2. asked by need help
3. 1,162 views
The probability that a 3-year old garter snake will reach 4 years old is 0.62719. (a) what is the probability that two randomly
1. 1 answer
2. asked by carol
3. 1,162 views
You start your shift as a cashier with your drawer containing ten $1 bills, 5 $2 bills, three $5 bills, one $10 bill and one
1. 2 answers
2. asked by Shelagh
3. 1,155 views
Using 32.00 g/mole as the molecular mass of oxygen and 28.01 g/mole as the molecular mass of carbon monoxide, solve the above
1. 0 answers
2. asked by help (:
3. 1,150 views
what is the greatest mass that can be taken an exact number of times from 720kg,1008kg and 672kg?
1. 6 answers
2. asked by Ghislaine
3. 1,148 views
Set up a Hess’s law cycle, and use the following information to calculate ΔH∘f for aqueous nitric acid, HNO3(aq). You will
1. 0 answers
2. asked by Meg
3. 1,114 views
"To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time
1. 0 answers
2. asked by anonymous
3. 1,036 views
What is the mass of a proton? Is it 1g, 1amu, or something else?
1. 2 answers
2. asked by Cici
3. 1,019 views
The number of students who attended the class from monday to saturday were consecutive integers the average number of students
1. 2 answers
2. asked by Navami
3. 1,012 views
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 1.00
1. 0 answers
2. asked by Julie
3. 997 views
A number whose digit in the ten billions place is 5 less than 8
1. 1 answer
2. asked by Harry
3. 983 views
state whether each relation y=f(x) describes a quadratic function or noty=3-x^2
1. 2 answers
2. asked by Jeff
3. 947 views
a body of mass 40kg walk to a step in 40. find the kinetic energy
1. 1 answer
2. asked by godwin
3. 943 views
1g of hydrogen contains 6x10^23 atoms. the atomic wt. of helium is 4 u. it follows that the number of atoms in 1g of He is:
1. 2 answers
2. asked by veer
3. 938 views
the isotopic abundance of C-12 and c-14 is 98% and 2% by mass respectively. what would be the no. of atoms of c-14 isotope in
1. 2 answers
2. asked by veer
3. 938 views
If a latex balloon had a volume of 7.00 L at 39 °C, what would be the volume of this balloon at 21 °C?
1. 1 answer
2. asked by Tamisha
3. 924 views
okay so I have to work out this problem for school work and I don't understand it. the problem is : if the perimeter of an
1. 1 answer
2. asked by kayla
3. 918 views
state whether each relation y=f(x) describes a quadratic function or not
1. 2 answers
2. asked by Jeff
3. 914 views
Mary Happens is an 82-year-old Hispanic patient who has been admitted to the hospital. She has Medicare and Medicaid. What
1. 1 answer
2. asked by shay
3. 907 views
A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F=
1. 0 answers
2. asked by carol
3. 885 views
The decomposition reaction, x-->products, is second-order with rate constant k=0.0183 L/(s)(mol).How long will it take for the
1. 1 answer
2. asked by Jin
3. 880 views
Any vector can be written as a unit vector multiplied by the magnitude of the vector (a positive scalar). Write each of the
1. 0 answers
2. asked by rebekah
3. 872 views
According to a certain countries 44.5% of 3 year olds are enrolled in daycare. What is the probability that a randomly selected
1. 1 answer
2. asked by carol
3. 867 views
un Lanes Bowling charges a fee of $4 to use their shoes and $6 for each game played. Salim wants to figure out how much it will
1. 1 answer
2. asked by Madison
3. 855 views
The sun is a satellite of Milky Way's galactic central cluster. The sun revolves around this center with a radius of 2.28x10^20
1. 1 answer
2. asked by Tyco
3. 840 views
1 mole of element x has mass, 0.444 times the mass of 1mole of element Y. one average atom of element x has mass 2.96 times the
1. 3 answers
2. asked by veer
3. 840 views
Lily designed a deck in her backyard that is in the shape of a quadrilateral that has only 1 pair of parallel sides. What is the
1. 1 answer
2. asked by Anonymous
3. 825 views
Suppose a coin is tossed 100 times 57 heads and 43 tails what is the probability the next one will be heads.
1. 1 answer
2. asked by carol
3. 801 views
what is the value of x if m arc ADC =5(x-3)and angle ABC=165
1. 1 answer
2. asked by adiba
3. 792 views
The CIA published data about foreign countries on its web page. In particular they show total population as well as population
1. 0 answers
2. asked by Jamie
3. 778 views
1. Arrange the following in order of decreasing reactivity toward nitration. Fully explain please I could use some help!!A.
1. 0 answers
2. asked by Anonymous
3. 769 views
A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F=
1. 0 answers
2. asked by carol
3. 764 views
Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3.
1. 3 answers
2. asked by Annika
3. 763 views
A baseball player hit 59 homeruns in a season. Of the runs, 22 went to right field, 15 went to right center field, 8 went to
1. 1 answer
2. asked by carol
3. 734 views
What type of reaction is photosynthesis, the process where carbon dioxide combines with water to form glucose in the presence of
1. 3 answers
2. asked by josie
3. 732 views
find the value of the permutation12P0
1. 1 answer
2. asked by carol
3. 727 views
) Calculate the amount of unreacted aqueous ethanoic acid (CH3COOH(aq)) in the sample taken for titration with aqueous potassium
1. 1 answer
2. asked by jsame
3. 714 views
Imagine that you have a rectangular swimming pool, but you have no idea how deep it is. Youknow that the pool has a volume of
1. 2 answers
2. asked by shameek
3. 714 views
I'am doing grade 11 now and when i passed grd 12 next year.i want to know what caree is good for my subjects ,because i don't
1. 15 answers
2. asked by Avumile
3. 711 views
a rise of 4 meters and a rise of 6 meters
1. 1 answer
2. asked by Anonymous
3. 704 views
the approximate no. of molecules of co2 present in 44g of co2 is:
1. 2 answers
2. asked by veer
3. 704 views
a sample of ammonium phosphate (NH4)3PO4 contains 3.18 mole of H atoms. number of mole of o atoms in the sample is:
1. 3 answers
2. asked by veer
3. 697 views
1. Two similar cylindrical polished bars weighing 5.00 N each lie next to one another in contact. A third similar bar is placed
1. 3 answers
2. asked by GG Khannam
3. 693 views
The activation energy, Ea, for a zeroth-order reaction, X-->products, is most readily obtained from the slope of a plot of:
1. 1 answer
2. asked by Jin
3. 689 views
If John stands near a 30 foot tall tree and leans a 50 foot tall ladder against the tree that reaches to the top of tree, then
1. 2 answers
2. asked by Anonymous
3. 670 views
A baseball player hit 59 homeruns in a season. Of the runs, 22 went to right field, 15 went to right center field, 8 went to
1. 2 answers
2. asked by carol
3. 664 views
A group of friends consist of 3 girls and 5 boys. If that group of friends is separated into a group containing 1 girl and 2
1. 1 answer
2. asked by y.
3. 660 views
a boy travels in a boat at an angle of 20 degrees to the river bank.if he travels 200m before reaching the opposite
1. 2 answers
2. asked by mbongeni
3. 656 views
Use back substitution to solve the system of linear equationsx-2y+z=8 y+z=5 z=2 **I tried to solve it eventho im still
1. 2 answers
2. asked by Anonymous
3. 655 views
A bicycle tire has a diameter of 60cm and rotates 33.3 revolutions per minute.How far does a point on the edge of the tire
1. 2 answers
2. asked by Ghislaine
3. 653 views
which one of the following pairs of gases contains the same no. of molecules:
1. 0 answers
2. asked by veer
3. 653 views
what is the molarity of a solution prepared by dissolving 1.25g of hcl in water to make 30 centimeter cube of solution
1. 1 answer
2. asked by hifsa
3. 646 views
8. Among 38-43 year old, 25% say they have written an editorial letter while under the influence of peer pressure. Suppose two
1. 0 answers
2. asked by carol
3. 642 views
A golf ball is selected at random from a golf bag. If the bag contains 3 black balls, 8 orange balls, and 4 brown balls, find
1. 1 answer
2. asked by carol
3. 636 views
On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of
1. 1 answer
2. asked by Piper
3. 608 views
the quotient of g and 9
1. 1 answer
2. asked by Anonymous
3. 596 views
It's me again :)and again I need help with a mail to my prof... Dear Ms. ... ... and I thought about our presentation. Our topic
1. 1 answer
2. asked by Cindy
3. 594 views
Prove the identitycsc^2x = 2sec2x / sec2x - 1 Sorry i really tried. I got : LS = 1 - (cos^2x/sin^2x) but that's it. please help
1. 1 answer
2. asked by Nihira
3. 585 views
At the faculty costume party , each teacher from Transylvania Middle school came dressed as his of her favorite creepy creature
1. 1 answer
2. asked by Jessica
3. 580 views
1. (Covered Interest Arbitrage) Harry Norman, a foreign exchange trader at UBS’s office in Tokyo has $2,000,000 or its yen
1. 0 answers
2. asked by Anonymous
3. 579 views
How to solve first question using a t table please help answer question really stuck on wok new answers 19 or170 can you tell me
1. 1 answer
2. asked by Jessica
3. 572 views
Write a sentence that explains the relationship between the two numbers. 5/1/2 + 14 (5/1/2 + 14) x 1/4 . My answer was they are
1. 2 answers
2. asked by Pinks
3. 570 views
ind the monthly payment for the loan. (Round your answer to the nearest cent.)Finance $450,000 for a warehouse with a 7.50%
1. 1 answer
2. asked by Mary Ann
3. 568 views

Back to June 2014

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025