Monday
August 29, 2016

Posts by michelle

Total # Posts: 1,899

Bio 20
Hydrogen sulfide gas is combusted with oxygen gas to produce sulfur dioxide gas and water vapour. If there is 19.3 L of oxygen gas, what maximum volume of hydrogen sulfide gas could be combusted?
May 11, 2015

Chemistry 20
Hydrogen cyanide gas is produced industrially by the reaction 2 CH4(g) + 3 O2(g) + 2 NH3(g) → 2 HCN(g) + 6 H2O(g) What volume of O2(g) is needed to completely react 17 L of CH4(g) at STP?
May 11, 2015

Math
its D 4 is D GAWH
May 8, 2015

Chemisty
What is the molar solubility of AgCl, Ksp= 1.60x^-10, in a solution that also contains 0.0250 M KCl? The answer is 1.60x^-10. But I am not sure why this is. Does it have to do with the solubility rules? Please Help.
May 7, 2015

Medical science
Dimethyl ether = predominate weak dipole-dipole intermolecular force. (positively charged hydrogen atoms and the negatively charged oxygen atoms). H+ H+ H+- C- O - C - H+ H+ H+ Ethanol = hydrogen bonding (Hydrogen bonding to oxygen) H+ H+ H+ - C - C - O - H+ H+ H+ Hydrogen ...
April 29, 2015

Medical science
Dimethyl ether = predominate weak dipole-dipole intermolecular force. (positively charged hydrogen atoms and the negatively charged oxygen atoms). Ethanol = hydrogen bonding (Hydrogen bonding to oxygen) Hydrogen bonds have higher boiling points
April 29, 2015

Math
EX: I took the answers from Amy and got a 5 out a 8 meaning I got 3 questions wrong (doesn't matter any way, I get good grades. I can bring that up to a A ( without Jiskha)
April 24, 2015

Math
Look at the question, Look what the person is saying what number 7 is or 8 honestly, I though y'all would think about that
April 24, 2015

Math
Some questions are mixed up so someone can be like " the Answer are A, D, B, C, and someone can just take them without looking. What im trying to say is someone quick check can be A, D, B, C, When someone else is A, B, D, A, That way you HAVE to look first
April 24, 2015

chem
a solution is prepared with 3.26g kcl and water to make 25.0ml,of kcl,what is the %(m/V) of the kcl solution.
April 22, 2015

Molarity question
ahh thank you!
April 18, 2015

Molarity question
okay so in lab we made up 2 solutions of FeCl3 and KI. We varied the volumes...I was just wondering how to calculate a new concentration for those solutions. We weighed out .825g of the FeCl3 and 1.35 g of the KI. For trial one we used 20 mL of both. For trial 2 we used 20.0 ...
April 18, 2015

Chemistry: Potentiometric Anyalysis
Ok. Thank you. That is what I was thinking. I really appreciate your help.
April 14, 2015

Chemistry: Potentiometric Anyalysis
I am still working on a handful of the calculations.
April 14, 2015

Chemistry: Potentiometric Anyalysis
DrBob222, In the lab we used a NaOH solution with a 0.1088M to calculate the equivalence point of a unknown weak acid using "Logger Pro" program. I used 0.4530g of the unknown acid and dissolved it in 75ml of distilled water. For my 3 three trials, I gather enough ...
April 14, 2015

Chemistry: Potentiometric Anyalysis
If the pH probe was miscalibrated and reports the pH to be 1 unit higher than the true pH of the solution it is in, would the molar mass you report for the solid acid be higher, lower, or equal to the true molar mass of the acid? This for my post lab write up. I think that the...
April 14, 2015

Math
Perform the calculations 6 ft, 5 in,-2 ft, 7 in = what in ft, and inches Thanks
April 14, 2015

Math
Perform the following calculations 7 yds , 1ft -3 yds, 2 ft= what in ft Thanks
April 14, 2015

L.A
1.B 2.A 3.D 4.C
April 14, 2015

Math
A plane has a height of 1000 m. You see the plane at an angle of 40 degrees with the ground . How far away is the plane from where you are standing.
April 12, 2015

Math
A wall has dimensions 25 m by 10 m represent the wall with a drawing if the scale is 1 cm represents 5 m
April 12, 2015

statistics
would it be B
April 10, 2015

LA plz help ms.sue
DAB
April 9, 2015

Chemistry
0.688g of antacid was treated with 50.00ml of 0.200M HCl. The excess acid required 4.21 mL of 1.200 M NaOH for back-titration. What is the neutralizing power of this antacid expressed as mmol of HCl per gram of antacid? I think the answer should be: (50.00ml HCl)(0.200M HCl)= ...
April 6, 2015

physics
A car speeds up uniformly from rest so that it has a velocity of 30ms -1 after 20 second.How far does the car travel in first 10 seconds?
April 6, 2015

physics
A car speeds up uniformly from rest so that it has velocity of 30 ms-1 after 20 seconds. Question/ How far does the car travel in first 10 seconds?
April 6, 2015

physics
A car speeds up uniformly from rest so that it has a velocity of 30 ms-1 after 20 second. How far does the car travel in first 10 second?
April 6, 2015

Chemistry
The bubble in the tip of the buret is not removed prior to performing the NaOH standardization. Will the reported concentration of the NaOH be greater than, less than, or equal to the true concentration of the NaOH if the bubble is flushed from the buret during the titration? ...
April 4, 2015

Chemistry
am I doing this equation correctly, please help. K3PO4(aq) + Ba(NO3)2(aq) my answer: 3K(NO3)2(aq) + 2Ba(PO4)3(s) Double displacement precipitation
April 4, 2015

Chemistry
Why can't milk of magnesia (Mg(OH)2), act as a buffer?
April 2, 2015

Chemistry
A jar contains 75mL of a .45M silver nitrate solution. Will 200g of solid copper be enough to bring all the silver out of solution as a solid?
March 30, 2015

Chemistry
Thank you Dr. Bob222
March 30, 2015

Chemistry
Given that Ka for HIO is 3.2 × 10-11 at 25 °C, what is the value of Kb for IO– at 25 °C? Then, Given that Kb for C6H5NH2 is 1.7 × 10-9 at 25 °C, what is the value of Ka for C6H5NH3 at 25 °C? I don't know where to start? Do I need an ICE ...
March 30, 2015

Physical Science
A man loads 1,000 sacks of flour into a truck in 30 minutes. each sack has a mass of 20 kg and the man must lift each sack 1.00 m from a cart up onto the truck bed. How much power did the man develop?
March 30, 2015

Physics
A motorist is trying to loosen a stubborn lugnut by standing on the end of a wrench. The wrench is inclined 33.8 degrees above the horizontal and the distance from the center of the nut to the end of the wrench is 0.60 m. Assuming the motorist does not bounce up and down on ...
March 29, 2015

Chemistry
Great! Thank you. This helps a lot!
March 27, 2015

Chemistry
A buret is partially filled with NaOH solution, to a volume of 1.14mL. A 20-mL sample of 0.1011 M HCl is titrated to a faint pink phenolphthalein endpoint. The final buret buret reading is 22.37mL. What is the molarity of the NaOH solution? Please help. Thank you in advance.
March 27, 2015

Math/Science
How do you convert millimeters to micrometers? For 10 mm, I got .010 micrometers, but I'm not sure if that's right.
March 25, 2015

algebra
what is the square root of 144?
March 23, 2015

Math check
GG bro i got 5/5 thanx cake and chris
March 21, 2015

English
Is the foghorn an archetype then ? I'm just really lost in this whole poem. Because archetypes are suppressed in the unconscious, so they talk about something they never intended is that what is meant ?
March 19, 2015

English
That is the idea that was proposed...I just don't understand the poem and its context in order to apply Jung's theory.
March 19, 2015

English
There is a deeper meaning to the poem and I am supposed to analyze the poem using Jung's theory of the psyche !
March 19, 2015

English
I need help with the following poem analysis, I do not know what it is saying! FOGHORN Surely that moan is not the thing That men thought they were making, when they Put it there, for their own necessities That throat does not call to anything human But to something men had ...
March 19, 2015

math
An arc AB of length 5cm is marked an a circle of radius 3cm. Find the area of the sector bounded by this arc and the radii from A and B.
March 15, 2015

math
A cord AB of length 4cm divides a circle of radius 3.3cm into two segments.find the area of each segment.
March 15, 2015

math
which pizza has the best value for the money; a 10 inch round pie for $6 or a 14 inch pie for $10? Support your answer.
March 14, 2015

English-Please Help
OMG TY ANSWER
March 13, 2015

math
6/(v-5)(v+2) if the rational expression is defined for all real numbers
March 9, 2015

math
Leslie needs 324 inches of fringe to put around the edge of a tablecloth. The fringe comes in lengths of 10 yards. If Leslie buys 1 package of fringe, how many feet of fringe will she have left over?
March 9, 2015

math
No
March 8, 2015

Math
A phone tree is used to let committee members know that a meeting is cancelled. The committee chair calls 5 people . Those 5 people each call 5 people and those additional people each call 5 people. How many members have been called?
March 6, 2015

CHEMISTRY!!!!
Determine the pH at the equivalence point in the titration of 41.0 mL 0.096 M formic acid with 0.108 M NaOH at 25oC. Calculate the pH of a solution that is 0.22 M pyridinium ion (C5H5NH+) at 25oC.
March 5, 2015

Art Help!!! Thank you
OG help. Thanx You
March 3, 2015

Chemistry! Please Help!
I have part b if that helps 100 g of CacO3 give 44 g of CO2 so 12 g will give 5.28 g of CO2 so moles of CO2 = 0.12 moles Volume = 0.12 X 22.4 L = 2.688 L PV = nRT Pressure = 0.12 X 0.0821 X 998 / 2.688 = 3.65 atm
February 26, 2015

Chemistry! Please Help!
Lime (CaO) is used to prevent SO2 from escaping smokestacks of coal burning power plants by the formation of solid CaSO4•2H2O also known as the mineral gypsum. One of the important reactions in the overall process is the dissociation of CaCO3(s). b. If a 12.0 g sample of ...
February 26, 2015

Math
The math question is "in a piggy bank there is a total of $15.75. If the ratio of dimes to quarters is 5:7, find the total amount in quarters. My question is, what formula would I use to solve this?
February 19, 2015

English
TY ITS D, B, C, AND B
February 18, 2015

Language Arts
I need help!!!!!!!
February 17, 2015

Art
Bruh ok the REAL answers 1. D 2. A 3. C
February 16, 2015

Chemistry!!!!
1. For a reaction mechanism to be plausible, what 2 criteria must be met? 2. The reaction between CO and NO2 to produce NO and CO2 is thought to occur in 2 steps. NO2 + NO2 ====> NO + NO3 NO3 + CO =====> NO2 + CO2 The experimental rate law is, R=k[NO2]2 Write the ...
February 12, 2015

Chemistry!!!!
1. For a reaction mechanism to be plausible, what 2 criteria must be met? 2. The reaction between CO and NO2 to produce NO and CO2 is thought to occur in 2 steps. NO2 + NO2 ====> NO + NO3 NO3 + CO =====> NO2 + CO2 The experimental rate law is, R=k[NO2]2 Write the ...
February 12, 2015

physics
A man named Harold is standing in a train car that has no windows. Since there aren't any windows, he doesn't know how fast or in what direction the train is moving or whether it is accelerating or decelerating. Harold decides that he might be able to figure something ...
February 11, 2015

Art
Thanx midnight
February 11, 2015

chemistry
Balance redox reaction. Fe(s) + O2(g) + H2O(l)-->Fe2+(aq) +OH-
February 8, 2015

SS
it's not cheating, this website is from connections
February 7, 2015

Physical science
A 70-kg man and a 50-kg woman are in a 60-kg boat when its’ motor fails. The man dives into the water with a horizontal speed of 3 m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1 m/s? If not, can the woman ...
February 6, 2015

Chemistry
1. If an aqueous solution that is 0.15 M in HF has an osmotic pressure of 3.9 atm at 25oC, what is the percent ionization of HF at this concentration? 2. A mixture of 2 volatile liquids is said to be ideal if each component obeys Raoult’s Law: Pi=XiPio Two volatile ...
February 4, 2015

English
@LMAO WTF
February 3, 2015

L.A.
Thank you
February 1, 2015

biochemistry
Calculate the pH of the solutions obtained by dissolving the following in a liter of water: 0.2 mole of glycine plus 0.1 mole of NaOH I know the answer is ph = 9.60 which i know is pka2 of glycine but im not sure how to set up this question. This is just a practice problem for...
January 30, 2015

LA
OH GAWD are y'all really fusing over this??? really?????
January 23, 2015

Language Arts
lol me too 100% :D
January 21, 2015

English (Dracula)
ok thank you!!! i like night stalker
January 20, 2015

English (Dracula)
I am making a Wanted Poster of Dracula and i dont know what statement to put about him below the picture of him. i was thinking like: Evil Count and Blood Thristy
January 20, 2015

Dracula novel
What are some physical and psychological attributes of Dracula
January 20, 2015

MATHEMATICS
How do i get to the answers as shown above
January 18, 2015

Calc Physics
The velocity as a function of time for an asteroid in the asteroid belt is given by v(t)= vo e^(-t/to)i + (vo t/ 2 to) j with vo and to constants. Use ti = 0 as the initial time, and tf = 472 s as the final time. The values for the constants that you will use are: vo = 9 m/s ...
January 17, 2015

math
Problem: A ball is dropped from the top of a building that is 250 feet tall. The height h of the ball in feet after t seconds is modeled by the function h = -16t2 +250. How long will it take for the ball to reach the ground? Round your answer to the nearest tenth if necessary.
January 13, 2015

chemistry
Sulfuric acid is dripped onto samples of three metals: silver, =zinc, and aluminium a) Use the activity series to determine whether a reaction will occur with each metal b) Write a chemical equation for each reaction that occurs
January 11, 2015

algabra
Janie's couch is 7 1/2 feet long.the scale of the dollhouse is 1 inch:2feet. what is the length of the miniature couch for the dollhouse?
January 10, 2015

chemistry
a 2.00l buffer contains 1.00 mol HNO3 mixed with 1.00mol NaNO2 a. write the relevant ionization equation for this buffer. b. determine its pH c. determine the new pH if 1.00g of NaOH is added to the buffer
January 1, 2015

Math
rick has a box of coins. The box contains 51 coins. Which consist of pennies, dimes and quarters. The number of pennies equal the number of dimes the total value of the box of coins is 5.73. How many dimes? how many pennies ? how many quarters?
December 19, 2014

math
A company will need 55,000 for a new addition. To meet this goal the company deposits money in an account today that pays 5% interest annual compound quarterly. to meet this goal in five years what would the company need to deposit today?
December 18, 2014

Math
given the function f decribed by f(x)=-x-6, find f(-7)=?
December 16, 2014

ap physics
a 37.4-kg traffic light is supported by two wires prove you answer applying newtons law
December 4, 2014

accounts
Did you ever get the answer to this? Please help
December 4, 2014

Chem 130
Carbon monoxide burns in oxygen to form carbon dioxide. what volume of oxygen at 25 degrees Celsius and 760. mmHg is required to react with 15.0 L of carbon monoxide which id at STP?
December 1, 2014

Social Studies
im on the quiz of s.s
December 1, 2014

Algebra 2
Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 I'm having trouble solving this problem.
December 1, 2014

math
a company will need $30.000 in 7 years for a new addition. To meat this goal the company deposits money in an account today that pays 7% annual interest compounded quarterly. find the amount that should be invested to total $30.000 in 7 years?
November 28, 2014

IT
The No Interest Credit Company provides zero-interest loans to customers. Design an application that gets customer account data, including an account number, customer name, and balance due. Output the account number and name, then output the customer's projected balance ...
November 27, 2014

U.S. History Help!!!!!!!
are yall from connexus???
November 26, 2014

math!!
5^6 * 5^3
November 26, 2014

math
can you explain more im lost . plz
November 26, 2014

math
conver the numeral to a numeral in base 10 1101 basetwo can some one plz help .
November 26, 2014

math
(-q^2 +3)(q^2 -2)mulitply
November 21, 2014

math
multiply (-5-p)(5+p)
November 21, 2014

Math
multiply -p(p+q+2)
November 21, 2014

Physics
A naked person (e=0.75) with a surface area 2.00 square meters and a skin temperature of 34 degrees Celsius is in sauna at 90 degrees Celsius. If he stays in the sauna for 30 minutes, (a) How much heat does the perspn radiates? (b) How much heat does he absorb from the walls ...
November 19, 2014

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