Questions Asked on April 20, 2008

TiO2 + C + 2Cl2 > TiCl4 + CO2If you begin with 1.25 moles of TiO2, what mass of Cl2 gas is needed? i got 175g of Cl2 is my
1. 4 answers
2. asked by shaggy
3. 9,238 views
Calculate the theoretical yield of aspirin to be obtained in this experiment, starting with 2.0 g of salicylic acid and 5.0 ml
1. 7 answers
2. asked by Sara
3. 3,025 views
What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10?Rate my answer please For your understanding: HCN ⇌
1. 2 answers
2. asked by Amandeep
3. 2,827 views
During the electrolysis of molten aluminum chloride in an electrolytic cell, 5.40 g of aluminum is produced at the cathode.
1. 2 answers
2. asked by Rishikesh
3. 1,543 views
1)Ethanol is made by the fermentation of sugar.(a)Suggest a temperature for carrying out the fermentation and explain your
1. 1 answer
2. asked by Anonymous
3. 1,502 views
Sodium Chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine
1. 2 answers
2. asked by shaggy
3. 1,452 views
A weak base with a concentration of 1.3 mol/L has a percent ionization of 0.72%. What is the Kb of this weak base?
1. 1 answer
2. asked by Chaitanya,
3. 1,287 views
What is the percent ionization of a 1.38 mol/L weak acid if its Ka = 2.7 x 10^-6?Thanks again!
1. 1 answer
2. asked by Amandeep
3. 1,269 views
Good Afternoon,Could you please see if i have translated this english to french correctly? Most squirrels are active during the
1. 3 answers
2. asked by Rachael
3. 1,231 views
1)Ethanol is made by the fermentation of sugar.(a)Suggest a temperature for carrying out the fermentation and explain your
1. 0 answers
2. asked by Anonymous
3. 1,216 views
Find the temperature at which the reaction below is spontaneous given this data:Hf^o of NH3(g) = - 46 kJ/mol, S^o of NH3(g) =
1. 1 answer
2. asked by Amandeep
3. 1,146 views
Three moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 430 to 160 K.(a) What is the work
1. 1 answer
2. asked by Tasha
3. 1,081 views
I am confused as to how light would work in the following question:Some very efficient streetlights contain sodium vapour under
1. 4 answers
2. asked by Corin
3. 1,064 views
Calculate the sound level in decibels of a sound wave that has an intensity of 2.25 µW/m2.F
1. 1 answer
2. asked by chris adison
3. 1,011 views
A crane in a marble quarry is mounted on the rock walls of the quarry and is supporting a 2900kg slab of marble as shown in the
1. 0 answers
2. asked by Hong
3. 1,010 views
Chromium metal can be plated onto an object from an acidic solution of dichromate ions. What average current is required to
1. 1 answer
2. asked by Rishikesh
3. 1,002 views
I am working on the cost of taxation.Question: The market for pizza is characterized by a downward-sloping demand curve and
1. 2 answers
2. asked by G
3. 942 views
My French teacher is having us write to our fifth grade pen pals, and I sent my first letter a while ago with everyone else in
1. 8 answers
2. asked by Nadine
3. 926 views
A bullet of mass 50 grams is fired horizontally into a wooden block of mass 0.2kg. The wodden block is suspended from the
1. 1 answer
2. asked by ibroo
3. 870 views
I am super confused with permutations and combinations. I just don't see when you are supposed to use each one, and when you
1. 7 answers
2. asked by Destiny
3. 857 views
1)Ethanol is made by the fermentation of sugar.(a)Suggest a temperature for carrying out the fermentation and explain your
1. 1 answer
2. asked by Anonymous
3. 838 views
24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after
1. 1 answer
2. asked by Chaitanya
3. 829 views
A grocery store has a gallon of milk for $2.30. They also have a 4 litter container of milk for $2.30. Which is the better buy
1. 1 answer
2. asked by Dj
3. 823 views
Which of the compounds below exhibit geometric isomerism (cis-, trans-)?1-chloro-1-pentene 1-heptene 1,2-dimethylcyclopentene
1. 3 answers
2. asked by lie
3. 822 views
please check my answer thankswhat is the normal range of a pulse rate of an adult A 60 -80 B 60-110 C 75-120 D 80-140 I picked B
1. 1 answer
2. asked by Helana
3. 818 views
I have to match the following:A. Individualism versus collectivism answer: Humanity theory B. Popular theorist Eysenck initiated
1. 2 answers
2. asked by rose - Ms. Sue
3. 801 views
What mass of Ag2CO3 would be found in 1.4 L of a saturated solution if the Ksp of Ag2CO3 is 8.2 x 10-12?
1. 1 answer
2. asked by Chaitanya
3. 777 views
A car bumper is plated with chromium using chromium(III) ions in solution. If a current of 54 A flows in the cell for 45 min 30
1. 1 answer
2. asked by Alex
3. 764 views
Sucrose is commonly known as table sugar. The formula is C12H22O11. You burn 7.29 grams of sucrose in a bomb calorimeter. The
1. 1 answer
2. asked by billy bob j
3. 756 views
Hi, is there anyone who can help me with this essay's English checking? Thank you very much!##################################
1. 3 answers
2. asked by Nina
3. 737 views
For corrosion resistance, a steel bolt is plated with nickel from a solution of nickel(II)sulfate. If 0.250 g of nickel produces
1. 1 answer
2. asked by Alex
3. 728 views
match-Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural E. Popular theorists include Maslow
1. 1 answer
2. asked by rose - Ms. Sue
3. 725 views
please check my answerTrue or False The medical assistant measured the circumference of the infant's head the method of the exam
1. 1 answer
2. asked by Helana
3. 719 views
Good Afternoon,Could you please see if i have translated this english to french correctly? Most squirrels are active during the
1. 2 answers
2. asked by Alyssa Nand
3. 714 views
Calculate the value of the equilibrium constant (Kc) for the reaction shown, if SbCl5 was found to be 5.57% decomposed at 521K
1. 4 answers
2. asked by help!!
3. 694 views
please check my answer thanksTrue or False The purpose of OSHA Bloodborne pathogens Standards is to prevent exposure of
1. 1 answer
2. asked by Helana
3. 692 views
An apartment has a living room whose dimensions are 2.5 m 4.8 m 5.9 m. Assume that the air in the room is composed of 79%
1. 2 answers
2. asked by Johnson
3. 683 views
You drop a hot copper penny (500 degrees celsius) that has a mass of 4.5 grams into a glass of cold water (6.0 degrees celsius)
1. 1 answer
2. asked by billy bob j
3. 671 views
match-Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural E. Popular theorists include Maslow
1. 1 answer
2. asked by rose - Ms. Sue
3. 669 views
An aspirin tablet weighing 0.650 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolvedthe
1. 2 answers
2. asked by un
3. 655 views
After the death of Uthman, the Islamic world split into two groups: The Shiites and the what?I believe it is the Sunnis. Right?
1. 9 answers
2. asked by Tyler
3. 643 views
match-Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural A. Individualism versus collectivism
1. 1 answer
2. asked by rose - Ms. Sue
3. 633 views
In a study of particulate pollution in air samples over a smokestack, X1 represents the amount of pollant per sample when a
1. 1 answer
2. asked by amelie
3. 621 views
An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3.(a) How many moles of gas are present? moles
1. 1 answer
2. asked by Johnson
3. 617 views
spanish and french explores came to north america looking for what
1. 2 answers
2. asked by kathy
3. 617 views
please check my answer thanksTrue or False Korotkoff sounds are related to the determination of blood pressure I picked True
1. 1 answer
2. asked by Helana
3. 607 views
Write the equation for the reaction by which aspririn decomposes in an aqueous ethanol solution.C9H8O4 + C2H6 --> ?
1. 0 answers
2. asked by Sara
3. 594 views
In which of the following poems does the tone change from stanza to stanza?1) "Storm Ending" 2) "We Wear the Mask" 3) "Any Human
1. 1 answer
2. asked by Lucy
3. 587 views
a) why should you use moles in stoichimetric problems?b) solid reacts violently with water, producing heat, hydrogen gas, and
1. 1 answer
2. asked by john
3. 584 views
The pressure and volume of a gas are changed along a path ABCA in the figure. The vertical divisions on the graph represent 3.50
1. 0 answers
2. asked by Johnson
3. 578 views
For the sheet-metal stamping machine in a certain factory, the time between failures, X1 has a mean between the failures, of 56
1. 0 answers
2. asked by amelie
3. 575 views
The first step of the synthesis is described by the reaction below. When 1.200 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of
1. 1 answer
2. asked by david
3. 557 views
An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3.(a) How many moles of gas are present? moles
1. 1 answer
2. asked by Tasha
3. 547 views
What is the larger group of Muslims?Shiites or the Sunnis Is the Shiites the largest group?
1. 2 answers
2. asked by Tyler
3. 545 views
A portion of DNA molecules wound around a spool of histone protein is called aA. Centromere B. Nuclesome C. Spindle D. Furrow E.
1. 0 answers
2. asked by Anna
3. 535 views
a) why should you use moles in stoichimetric problems?b) solid reacts violently with water, producing heat, hydrogen gas, and
1. 3 answers
2. asked by john
3. 532 views
Following are rates of return on medical equip. company's stock and debt, and on the market portfolio, along with the
1. 0 answers
2. asked by teresa
3. 532 views
how could an element emit alpha and beta particles and result in the same element?
1. 1 answer
2. asked by cguff
3. 529 views
1. during pollination, where is pollen transferred to?2. the endosperm that forms from the union of a sperm nucleus and the
1. 0 answers
2. asked by shaggy
3. 528 views
Calculate the sound level in decibels of a sound wave that has an intensity of 2.25 µW/m2For this question don't I use
1. 1 answer
2. asked by chris adison
3. 521 views
balance the following equations and write an equation for the mole to mole relationship and the mass relationshipa. Na + H2O >
1. 5 answers
2. asked by shaggy
3. 515 views
Why would a manufacturer want to use hydrogenation?
1. 0 answers
2. asked by Jessica
3. 512 views
2Na + 2H2O > 2NaOH + H2How do i plug in the masses into this equation. or How do i find the mass relationship
1. 2 answers
2. asked by shaggy
3. 511 views
Hi. What was the percentage increase in energy consumption from 1970-1988? In 1970 it was 66.4 and in 1988 it was 80.2 So I
1. 7 answers
2. asked by Victor
3. 503 views
I've been doing alot of extra questions for physics lately, and these four are still giving me trouble. Please help me out and
1. 2 answers
2. asked by Joe
3. 501 views
Bonjour MmeI have tried to implement the corrections that you have given me but i wasn't sure about a few. But here is the
1. 1 answer
2. asked by Alyssa Nand
3. 501 views
Islam spread quickly due to :Good roads Musilims who were expert traders and traveled widely. People making pilgrimages to
1. 1 answer
2. asked by Tyler
3. 495 views
A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity of 1.34 Bq. How old is the mummy?
1. 2 answers
2. asked by Sandhya
3. 474 views
What is the correct answer?Question: An electroplating cell operates for 35 min with a current of 1.9 A. Calculate the amount,
1. 1 answer
2. asked by What is the correct answer?
3. 471 views
Determine whether the graphs of the two lines are parallel.y+3=3x 6x-y=-3 Are the graphs of the given equations parallel?
1. 1 answer
2. asked by Shawn
3. 470 views
similarities between and oxidative phosphorylation and photophosphorylation
1. 0 answers
2. asked by Helen
3. 466 views
what is the word for the definition stress that puches a mass of rock in two opposite directions??please help!
1. 1 answer
2. asked by sami
3. 466 views
Enter the oxidation number with the sign above each elementH2 OH^- Mg^2+ CO3^2-
1. 3 answers
2. asked by Amandeep
3. 461 views
Is water needed in the extraction of aluminium from bauxite in either the Bayer or Hall-Heroult proccesses?Please reply as soon
1. 1 answer
2. asked by Jonathan
3. 460 views
please check my answer thanksTrue or False the review of systems is a history of the patient's previous diseases, injuries and
1. 1 answer
2. asked by Helana
3. 458 views
please check my answer thank youWhat is the first thing you should do if your bare hands accidentally comes in contact with a
1. 1 answer
2. asked by Anonymous
3. 456 views
i need help finding this diabetes how it affects the body, diabetes it affects the body,
1. 3 answers
2. asked by Dawn
3. 455 views
Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each
1. 0 answers
2. asked by teresa
3. 447 views
I need a Title to my research paper, my topic is about telecommunication and I need it to be specific. I choose the use computer
1. 1 answer
2. asked by James
3. 444 views
In 1961, President Kennedy backed an invasion of the island by Cuban refugees in the US; it failed.what does it mean to back an
1. 1 answer
2. asked by sake
3. 444 views
please check my answer thanksTrue or False The Fowler's position is used for an exam of the abdomen I said False
1. 1 answer
2. asked by Helana
3. 441 views
I need a Title to my research paper, my topic is about telecommunication and I need it to be specific. I choose the use computer
1. 1 answer
2. asked by James
3. 440 views
I am doing a similar assignment as Anaa please help!y = 3cos(x-1) Amplitude: Period: Two x - intercepts: y-intercept: Domain:
1. 0 answers
2. asked by Amandeep
3. 438 views
i am studying the no child left behind act and i read that some states have a higher level of proficiency than others. In a pdf
1. 1 answer
2. asked by maggie
3. 435 views
The depth of a body of water can be found by emitting sound pulses reflected from the bottom. If the time interval from emission
1. 1 answer
2. asked by Bafana
3. 433 views
Logarithmics:Ie: log3 3^11 : Evaluate? Thanks.
1. 1 answer
2. asked by Pam
3. 431 views
An electroplating cell operates for 35 min with a current of 1,9 A. Calculate the amount, in mols, of electrons transferred.
1. 1 answer
2. asked by Alex
3. 428 views
limx-> -infinity 1/(sqaure root of 4/x^2 plus one) i don't understan why the answer is 1.
1. 1 answer
2. asked by rudy
3. 424 views
A cell, transferred 0.146 mol of electrons with a constant current of 1.24 A. How long, in hours, did this take?
1. 1 answer
2. asked by Rishikesh
3. 414 views
what's the area behind your knees called
1. 1 answer
2. asked by sake
3. 413 views
Will someone send me the ti 83 steps for: determine the graph of the equation: 9x^2+25y^2+z^2=225if one is available.
1. 1 answer
2. asked by Pam
3. 408 views
How would you translate 'it was better than i expected' into spanish?
1. 2 answers
2. asked by cat
3. 406 views
please check my answer thanksFor which of the following procedures should you wear gloves ? A veinipuncture B CT scan C EKG D
1. 1 answer
2. asked by Helana
3. 405 views
Please can someone help, I need to find info on what Quakers think of Peace?
1. 1 answer
2. asked by mathilda
3. 402 views
Islam treated jews and christians with tolerance, but made them what?1)Pay special taxes 2)worship Abraham & Moses 3)follow the
1. 5 answers
2. asked by Tyler
3. 402 views
Could you please help pe formulate a thesis for the following topic;'Women in WWII:An important step in womens libertion or
1. 3 answers
2. asked by Alyssa Nand
3. 397 views
Show that the line of symmetry for the graph of f(x)=(x-a)(x-b) is x=(a+b)/2, where a and b are any positive real numbers.I
1. 1 answer
2. asked by Malisa
3. 392 views
what are the methods recomanded by experts for helping victims of bullying?
1. 1 answer
2. asked by dudu
3. 387 views
later and then are what part of speech
1. 1 answer
2. asked by tish
3. 374 views
how is heliocentric(planets and Earth revolve around the sun) connected to science?math? the world? you? and y is it important?
1. 1 answer
2. asked by anonymous
3. 367 views

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