Friday
July 1, 2016

Posts by Patrick

Total # Posts: 692

Math
I will go back and try number 1 again and relook at that one and will then post my second answer.
October 21, 2015

Math
The assignment is Compare Estimated Quotients 1) $46.35/3 and $81.35/5 Round $46.35 to $50/3=16.666 Round $81.35 to $80/5=16 16.666 is greater than 16 2)$7.27/13 and $9.08 divided by 19 Round $7.27 to $7/13=0.538 Round $9.08 to $9/19=0.473 0.538 is greater than 0.473 3)8.2/12 ...
October 21, 2015

Math
Ty so much. I am a little slow at this.
October 21, 2015

Math
If I have to compare the below estimated quotient: 98.4/4 and 62.8/3 Would I estimate 98.4 to 98? Would I estimate 62.8 to 63? Then do: 98/4=24.5 63/3=21 So 98.4 would be greater than 62.8 Would this be correct?
October 21, 2015

Math
The assignment is Compare Estimated Quotients. 3) 654.3/82 and 289.5/31 654/82 and 290/31 654/82=7 and 290/31=8 So 7 is less than 8 Please let me know if I am correct on this or not.
October 21, 2015

Math
I have more math problems that I will to figure out. 2) 3.1 divided by 4 and 6.4 divided by 9 Estimate 3.1 which would be 3 Estimate 6.4 which would be 6 3 divided by 4 and 6 divided by 9 This one I am totally confused about. The only other way I can think is 32 divided by 4=8...
October 21, 2015

Math
Thank you so usually no the numbers behind the decimals don't really matter. I will keep that in mind.
October 21, 2015

Math
80/8=10 35/7=5 10 > 5 would be the answer. I would like to try and send a few more problems to see if I am on the right track with this. Do the number behind the decimal not really matter when estimating?
October 21, 2015

Math
Also with what you showed 80/8= 35/7= Do you need to actually do the division and then determine which number is bigger or smaller?
October 21, 2015

Math
Let me ask you. I guess what I don't understand is how did you get 80 and then 35? What is confusing me is that the number is 76.3 so I would have assumed with the .3 80 but then there is 37.6 and I was thinking rounding that up to 40. What am I not understanding?
October 21, 2015

Math
I have an assignment and it is Compare Estimated Quotients. Estimate each quotient. Then write < or > in the circle to compare each pair of estimates. Please let me know how I would begin estimating decimal division? 76.3 divded by 8 and 37.6 divided by 7
October 21, 2015

chemistry..anybody!
Actually, it was a typo...dr bob was right. Thank you, dr bob!
October 21, 2015

chemistry..anybody!
I don't know why it was marked wrong. This is what it said: Where is the 5.64 coming from? Is this a typo?(thank you) HINT To balance the equation, make sure that the number of each atom on the reactant side is the same as the number on the product side. Should the ...
October 21, 2015

Chemistry DR BOB help!!
Dr bob...you were right again! Thank you, it was a typo😊
October 20, 2015

Chemistry DR BOB help!!
I don't know why it was marked wrong. This is what it said: Where is the 5.64 coming from? (thank you) HINT To balance the equation, make sure that the number of each atom on the reactant side is the same as the number on the product side. Should the enthalpy change for ...
October 20, 2015

Chemistry DR BOB help!!
I don't know why it was marked wrong. This is what it said: Where is the 5.64 coming from? (thank you) HINT To balance the equation, make sure that the number of each atom on the reactant side is the same as the number on the product side. Should the enthalpy change for ...
October 20, 2015

Lnguage Arts
Thank you so very much for your time and assistance. Have a wonderful evening!
October 20, 2015

Lnguage Arts
Hello Ms. Sue. I think I somewhat get sentence 3. The part then that I would need to circle is-unless they lower their rope ladders for them since that is a dependent clause. The part that would be independent is-No one can reach them in their mountain tree forts. Would that ...
October 20, 2015

Lnguage Arts
There is a paragragh and I have to circle dependent clauses an underline independent clauses. The paragraph is as follows: Although some people are afraid of ninjas, since they kill tons of people, I think they're cool. Because Ninjas have so many enemies, they live high ...
October 20, 2015

chemistry-Dr BOB
thank you!!!!!
October 18, 2015

chemistry-Dr BOB
Hi Dr. Bob, I first want to tank you for all your help. Secondly, I don't understand why this was marked wrong. When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of ...
October 18, 2015

chemistry Dr. Bob
Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2 (g) and H2O (g) and releases 5.16x10^3 kJ/mol sucrose. a) Write a balanced thermochemical equation for this reaction. Make sure to include the physical ...
October 18, 2015

chemistry-Dr Bob
is that a -56? Dr. BOb. thank you When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and...
October 18, 2015

chemistry
Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2 (g) and H2O (g) and releases 5.16x10^3 kJ/mol sucrose. a) Write a balanced thermochemical equation for this reaction. Make sure to include the physical ...
October 18, 2015

chemistry
Sucrose (C12H22O11, table sugar) is oxidized in the body by O2 via a complex set of reactions that ultimately produces CO2 (g) and H2O (g) and releases 5.16x10^3 kJ/mol sucrose. a) Write a balanced thermochemical equation for this reaction. Make sure to include the physical ...
October 17, 2015

Spanish
-ar and -er verbs that change their stem in the present tense do not change in the preterite. They are conjugated just like other regular preterite verbs, using the regular endings. cerrar cerré cerraste cerró cerramos cerrasteis cerraron entender entendí ...
October 17, 2015

chemistry
is that a -56? Dr. BOb. thank you When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and...
October 17, 2015

Spanish
traduci and dijo ( el hombre dijo las direcciones a nosotros))
October 17, 2015

Spanish
"Mis" is referring to the books.
October 17, 2015

Spanish
puso........( only one person put or placed)
October 17, 2015

Spanish
Ellos trajeron la pintura a su casa y todos le dieron a ella una carta bonita .
October 17, 2015

Spanish
It's pidio....past tense...what did your dad ask you to do? El ( tu papa) te pidio.
October 17, 2015

Spanish
-ar and -er verbs that change their stem in the present tense do not change in the preterite. They are conjugated just like other regular preterite verbs, using the regular endings. cerrar cerré cerraste cerró cerramos cerrasteis cerraron entender entendí ...
October 17, 2015

chemistry/check my work I have to submit today
Is that a -56 ?
October 16, 2015

chemistry/check my work I have to submit today
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 16, 2015

chemistry
actually..I know this is right. I don't need help with this one. Thank you.
October 16, 2015

chemistry
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition. 2 H2O2(l) 2 H2O(l) + O2(g) Hrxn = -196.1 kJ How much heat is released when 529 kg H2O2 decomposes? ( ......... ) KJ *note ..watch sig figs . my work: • 2 H2O2(...
October 16, 2015

chemistry help DR. BOB
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 16, 2015

chemistry
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition. 2 H2O2(l) 2 H2O(l) + O2(g) Hrxn = -196.1 kJ How much heat is released when 529 kg H2O2 decomposes? ( ......... ) KJ *note ..watch sig figs . my work: • 2 H2O2(...
October 16, 2015

chemistry
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 16, 2015

chemistry Dr BOB
Am I correct? From data below, calculate the total heat (J) needed to convert 0.539 mol gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C c ethanol gas 1.43 J/g·°C c ethanol liquid 2.45 J/g·&...
October 16, 2015

chemistry
From data below, calculate the total heat (J) needed to convert 0.539 mol gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C c ethanol gas 1.43 J/g·°C c ethanol liquid 2.45 J/g·°C ÄH&...
October 16, 2015

chemistry
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition. 2 H2O2(l) 2 H2O(l) + O2(g) Hrxn = -196.1 kJ How much heat is released when 529 kg H2O2 decomposes? ( ......... ) KJ *note ..watch sig figs . my work: • 2 H2O2(...
October 16, 2015

chemistry
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 16, 2015

chemistry
From data below, calculate the total heat (J) needed to convert 0.539 mol gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C c ethanol gas 1.43 J/g·°C c ethanol liquid 2.45 J/g·°C ÄH&...
October 16, 2015

Grammar
Hello Mrs. Sue. You are correct. I rushed through those but I do see why now that I had number 2 and 5 wrong. I will study some more and look at the website. Thank you for all of your assistance and my god bless you.
October 15, 2015

Grammar
I have 10 more sentences that I just need to be shown if I am right or wrong on. I have to identify again whether the sentence has a dependent clause or independent clause. 1. The dog was at the clinic for three hours while the splinter was being removed. -The part of the ...
October 15, 2015

Grammar
Okay. Adjective clause in this case is what you are saying. Let me ask you. If the choices though are dependent clause or independent clause or neither then it would be neither is that correct?
October 15, 2015

Grammar
Thank you. There is one sentence that I am stumped on. It is as follows: Students who fail to show up for the Regents test must enroll in the Regents' remediation courses. The part of the above sentence that is underlined is-who fail to show up for the Regents test. That ...
October 15, 2015

Grammar
I have another three sentence in grammar that I just need to know if I am right or wrong on. 1. Christa left home at 4:00a.m. since she had to drive to Atlanta for a meeting. since she had to drive to Atlanta for a meeting is the part that is underlined. I feel that this ...
October 15, 2015

Grammar
Great. I will definitely check out this website that you sent. Thank you.
October 15, 2015

Grammar
Thank you so much for letting me know on this if I am right or wrong. Some of these sentences can be very confusing. Can you let me know what is the best way to determine the difference between dependent and independent clauses?
October 15, 2015

Grammar
7When you finish your homework, please take the dog for a walk. The part of the sentence that is underlined is When you finish your homework. I believe that this is a dependent clause because it cannot stand alone and When is a dependent marker. 8. After Juan completed the ...
October 15, 2015

Grammar
Yes however the entire sentence is underlined and I don't see unless I am missing something any indicators in it. So maybe if I am not mistaken since the entire sentence makes sense then it makes it an independent clause and they just tried to throw in a bit of a trick by ...
October 15, 2015

Grammar
Can you let me know how number 5 is an independent clause? I do not understand why?
October 15, 2015

Grammar
4. While walking at the park, John saw a raccoon eating potato chips. John saw a raccoon eating potato chips is underlined so I believe that this is an independent clause. 5. Students enrolled in bachelor's and associates degree programs must pass the Regents' Test as ...
October 15, 2015

Grammar
2.Brianna eats chocoloate whenever she gets poor grade in math. whenever she gets a poor grade in math is underlined. I believe this is a dependent clause. 3. After the house flooded, the family moved into a temporary shelter. After the house is flooded is underlined. I ...
October 15, 2015

Grammar
Thank you for letting me know if I am right or wrong. I am doing this for all for homework and am very rusty at this.
October 15, 2015

Grammar
The homework I determine whether the underlined group of words are dependent clauses, independent clauses or not a clause. 1. Although it is raining, Maria went for a jog at Green Park. Although it was raining is underlined. I believe this a dependent clause. I have 9 more ...
October 15, 2015

chemistry
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition. 2 H2O2(l) 2 H2O(l) + O2(g) Hrxn = -196.1 kJ How much heat is released when 529 kg H2O2 decomposes? ( ......... ) KJ *note ..watch sig figs . my work: • 2 H2O2(...
October 15, 2015

chemistry
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 15, 2015

chemistry
From data below, calculate the total heat (J) needed to convert 0.539 mol gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C c ethanol gas 1.43 J/g·°C c ethanol liquid 2.45 J/g·°C ÄH&...
October 15, 2015

chemistry
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition. 2 H2O2(l) 2 H2O(l) + O2(g) Hrxn = -196.1 kJ How much heat is released when 529 kg H2O2 decomposes? ( ......... ) KJ *note ..watch sig figs . my work: • 2 H2O2(...
October 15, 2015

chemistry
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ...
October 15, 2015

chemistry
From data below, calculate the total heat (J) needed to convert 0.539 mol gaseous ethanol at 300°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. Boiling point at 1 atm 78.5°C c ethanol gas 1.43 J/g·°C c ethanol liquid 2.45 J/g·°C ÄH&...
October 15, 2015

chemistry
What is the change in internal energy (in J) of a system that absorbs 0.246 kJ of heat from its surroundings and has 0.771 kcal of work done on it? Is this correct? 0.246, kJ x (1000 J/1 kJ) = 246 J 0.771 kcal x (4184 J/1 kcal) =3225.86 j 246 J + 3225.86 J = 3471.86 J or 3....
October 14, 2015

chemistry
Am I correct? Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g) --> ...
October 14, 2015

chemistry
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g) --> 2Fe2O3(s) ...
October 13, 2015

chemistry
Dr. Bob.. 630.24 kj was marked wrong...it said hint: make sure to carry out dimensional analysis........ ÄH value refers to the amounts of (moles) of substances and their matter in that specific equation. help....please....
October 13, 2015

chemistry
Consider the following balanced thermochemical equation for a reaction sometimes used for H2S production: 1/8 S8 (s) + H2 (g) ¨ H2S (g) ƒ¢Hrxn = -20.2 kJ (a)Is this an exothermic or endothermic reaction? (b)What is ƒ¢Hrxn for the reverse reaction...
October 13, 2015

chemistry
A 49.3 g sample of ethylene glycol, a car radiator coolant, loses 624. J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)? 624= 49.3 x 2.42(T-32.50) T = 37.73 = 38degrees is this correct? ...
October 13, 2015

chemistry
What is the (H3O+) and the ph of a buffer that consists of 0.25M HNO2 and 0.69M KNO2? (Ka of HNO2 = 7.1 x 10^-4) is this right? pH of acidic buffer pH = pka + log(salt/acid) pka = -log ka = -log(7.1*10^(-4)) = 3.15 = 3.15+log(0.25/0.69) pH = 2.71 [H3O+] = 10^-pH = 10^(-2.71...
October 9, 2015

Math
2.0
October 8, 2015

Math
A bakery used 4 cups of flour to make a full size cake. If they wanted to make a cake that was 0.5 the size, how many cups of water would they need.
October 8, 2015

Math
I apologize about this question I meant to send a different
October 8, 2015

Math
On Halloween 2 friends received 0.1 of a pound of candy. How much candy did they receive total?
October 8, 2015

math correction
correction what is : 1 x 10^-14 / 2.54 x 10^-3 the x's are (times) not variables thank you.
October 5, 2015

math
what is 1 x 10-14 / 2.54 x 10 -3 the x's are times not variables. I need the answer in scientific notation
October 5, 2015

chemistry
excited state
October 5, 2015

chemistry
The weak acid HQ has pKa of 4.89. Calculate the (OH-) of 0.500 M HQ This is what I have: pKa = 4.89 so Ka = 10^-4.89 = 1.29x10^-5 Ka = 1.29x10^-5 = [H+][Q-] / [HQ] 1.29x10^-5 = x^2 / 0.046 - x x^2 + 1.29x10^-5x - 5.93x10^-7 = 0 x = [H+] = 7.64x10^-4M pH = -log[H+] = 3.12 1....
October 4, 2015

chemistry
The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M Dissociation of HQ is ...
October 4, 2015

ap chemistry
The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M Dissociation of HQ is ...
October 4, 2015

chemistry
acetylsalicylic acid (aspirin) HC9H7O4 is the most widely used pain reliever and fever reducer. Find the PH of 0.040 M aqueous aspirin at body temperature (Ka at 37 C = 3.6 x 10-4) is this correct? initial concentration is 0.040 M. let change in concentration to equilibrium ...
October 4, 2015

chemistry
How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 9.75 to 9.01? Assume a negligible volume change. ……….x 10………Moles of ……………………..h3O+ or OH- I got 4.6001 x 10-5 M of ...
October 4, 2015

chemsitry
acetylsalicylic acid (aspirin) HC9H7O4 is the most widely used pain reliever and fever reducer. Find the PH of 0.040 M aqueous aspirin at body temperature (Ka at 37 C = 3.6 x 10-4) is this correct? initial concentration is 0.040 M. let change in concentration to equilibrium ...
October 4, 2015

chemistry
How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 9.75 to 9.01? Assume a negligible volume change. ……….x 10………Moles of ……………………..h3O+ or OH- I got 4.6001 x 10-5 M of ...
October 4, 2015

chemistry
Codeine (C18H21NO3) is a narcotic pain reliever that forms a salt with HCl. What is the pH of 0.064 M codeine hydrochloride (pKb of codeine is 5.80)? Thank you.
October 2, 2015

AP Chemistry
I am fairly sure that a) is no change, and c) is shifts to the right...but I am not sure about b) and d). Thanks. How does the equilibrium position shift as a result of each of the following disturbances? Sodium bicarbonate undergoes thermal decomposition according to the ...
October 1, 2015

chemsitry
1)Balance the following gas-phase reaction and 2) write its reaction quotient, Qc: CH4(g)+F2(g)......>>.....<<....... CF4(g)+HF(g) Include the physical states of all reactants and products in your balanced equation. Qc=
September 29, 2015

Math
Wtf
September 28, 2015

Chemistry
I was doing a lab experiment on the reaction of copper(II) sulphate and aluminum: 1) I measured 2.02g of copper(II) sulphate pentahydrate 2) I dissolved the copper(II) sulphate pentahydrate in 10mL of distilled water 3) I added 2.0mL of concentrated HCl to the solution and ...
September 26, 2015

Chemistry
I was doing a lab experiment: 1) I measured 2.02g of copper(II) sulphate pentahydrate 2) I dissolved the copper(II) sulphate pentahydrate in 10mL of distilled water 3) I added 2.0mL of concentrated HCl to the solution and mixed well 4) I added 0.25g on Aluminun foil to the ...
September 26, 2015

CBU
I was doing a lab experiment on the reaction of copper(II) sulphate and aluminum: 1) I measured 2.02g of copper(II) sulphate pentahydrate 2) I dissolved the copper(II) sulphate pentahydrate in 10mL of distilled water 3) I added 2.0mL of concentrated HCl to the solution and ...
September 26, 2015

CBU
How to calculate moles in a sample
September 26, 2015

math
Allison and Fred both work at the mall., but Allsion make $2 more than Fred. They work equal hours. Let x represent Allison earnings and y to represent Fred earnngs. Draw a graph representing the relationship between Allison and Fred earnings.
September 21, 2015

Math
combine like terms. 14 + 5x + 15 - 7x 29 - 2x
September 21, 2015

chemistry
Assume water boils at 100.0 C in Houston(near sea level) and at 90.0 C in Cripple Creek Colorado(near 9, 500 feet). If it takes 4.7 min to cook an egg in Cripple Creek and 4.4 min in Houston, what is Ea for this process? Enter your answer in scientific notation. Thanks.
September 14, 2015

chemistry
Assume water boils at 100.0 C in Houston(near sea level) and at 90.0 C in Cripple Creek Colorado(near 9, 500 feet). If it takes 4.7 min to cook an egg in Cripple Creek and 4.4 min in Houston, what is Ea for this process? Enter your answer in scientific notation. Thanks.
September 14, 2015

science
. Three charges are positioned as indicated in the figure. Calculate net force exerted on the +15 µC charge by the +11 µC and +13 µC charges
September 2, 2015

Physics
A 480 N man is standing on a 120 N pole supported by 2 blocks. The pole is 6 m long. One block is at the end while the other is 2 m away from the center. Where should the 480 N man stand?
July 12, 2015

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. Next>>