Chem- follow up question

36,141 results

Gen Chem II

Thanks for the information Dr. Bob. Would you be able to work it out so that I can actually see the steps with the numbers and follow from there. The question was on Vitamin K from Sunday at 2:44pm which you answered at 3:45pm. Thanks again. I am looking to get a tutor since I...

chem-follow up question to previous post

how do you calculate the molar mass?

follow up(for Count Iblis)

i have a follow up question for a previous post How do you know 2B is (20 "+" B) and not (2 "x" B) _______________________________________ to me this question does not make sense... it comes from a review packet for the SAT _______________________________________ Q: If 299 is ...

chem: Drbob222

Hi I have a follow up to a question that was answered previously. New question: So when the HPO4(2-) reacts with the NaOH, will the equation be this?: HPO4^(2-) + NaOH --> H2O + NaPO4(2-) But how do I write the equation for the H2PO4^- and HCl? H2PO4^- + HCl --> Here is ...

PHY: To AJAYB, follow up on previous response

First, I'd like to thank you for your response to my question. However, I had some follow up questions on your response from Saturday, July 28, 2012 at 8:27am. If you could take a look at that post and get back to me, it would be greatly appreciated.

To @Bosnian

I posted a follow up question to your answer to my recent question about a sum of a series.Hope you can check it. Thank you!

Chemistry (Analytical) followup

Thanks DrBob for answering the question! I was assuming it was something similar to that, but my confusion is that a follow up question is asking what happens to the dissolved Ca2+ if the pH is reduced to 2, so the pH has some effect, but I don't know what.

Can't submit follow up questions or thank the tutor

I can't submit a follow up question or thank the tutor after an answer or a response is posted by a tutor,as the "post answer" button not available in the bottom of the form,as it used to be. I tried reopening,refreshing the browser and switching the browser. Is this a new ...

life science , geography , history and math literecy

I am a grade 11 student and want to follow careers linked to geograpy . My problem is that most of the careers I am in interested in want pure math and im doing math literecy . My question is that , Is it possible for me to start mathematics in University so that I can follow ...


so i posted this question yesturday and got some help. which is the stuff below. can you look at the last thing i said which was the answer i got by doing what DrBob222 said to do and tell me if its correct.(the question is the first section) thanks chem - hannah, A salt ...

chem- drbob222 please help

my original question was: how do i figure this out?? How much heat does your body lose when 2.46 g of sweat evaporates from your skin at 25°C? chem - DrBob222, Tuesday, February 22, 2011 at 10:52pm q = mass water x delta Hvaporization. chem - Rebekah, Wednesday, February 23, ...

Chem Help!

I really need help with this question for my chem H.W. 1) On a summer day in Breckenridge, Colorado, the atmospheric pressure is 525 mm Hg. What is this air pressure in atmospheres? (round to the hundredths place) atm

chem repost!

when drawing molecular shapes, how do you decide which atoms go on axial or equtorial? (the more electronegative goes on _____) please help, my textbook confuses me with exmaples that follow both sides!


Write a net ionic equation for the reaction that occurs when excess nitric acid (aq) and potassium sulfite (aq) are combined. Note: Sulfites follow the same solubility trends as sulfates.


For Mathguru_ from statistic question on Tuesday April 10, 2007 follow up question- what if I wasn't given the standard deviation either- how would I solve this problem Other tutors can help, but without the previous information, it is impossible to help you. Please repost ...

K => I answered your question at bottom or next pg

I helped the best I could on your organic chem question


I know that Reiny has answered this question on how to simplify this, but what steps do I follow? (r^2 s)^5


2+7x8/4= 9x2=18 or 56/4+2=16 do i follow M.D.A.S or do I follow the problem? these have no parentheses.

English III

What is the theme of follow the poem Follow the Drinking Gourd? Give examples.


Follow this l*ink to see question!! It's on Brainly. (I think it's the first option... also, get rid of the spaces in the l*ink, i just put them there so jiskha would let me post) ht tps :/ /brainly. com /question/ 3764416


This is a follow up on my other question: I need help on Mitosis, and cell reproduction.

CHEM (DrBob222)

I had posted the question to that previous chem question, regarding Mo & V...they said that it should have been correct. What I am thinking that I was missing...must have been that I did not include 4s & then just not fill it. I had excluded it from my electron filling ...


Sorry I wrote that wrong. The exact question from the textbook says, 'Comment of the effect of concrentration of reaction time.' I don't really understand the question.

U.S. Government

I'm struggling with answering this question and I would appreciate any help one could offer. I'm needing to answer the following question in paragraph form: Which one of these two philosophies do you think the Supreme Court should follow: judicial activism or judicial restraint?

Chem question?

I have a homework question that says, If you were dissolving table salt in a beaker of water, what would a saturated solution look like (macroscopically)?


1. However you may go, I will follow you. 2. No matter how you may go, I will follow you. 3. However you go, I will follow you. 4. No matter how you go, I will follow you. [Can we use both 'go' and 'may go'? Any difference?] 5. It helps us talk to people at any place where ...

Chem help!

I need help for this question in combining gas law P1V1/T1=P2V2/T2. P1V1/T1=P2V2/T2 P1 is 1.5 atm V1 is a question mark. T1 is -20 °C K P2 is 2.6 atm V2 is 750 mL with a blank box underneath it. T2 is -5 °C K. How can I combine this question?

To @Writeacher

Yes,I used my phone to access this site from the very first day because I'm far from home due to my studies and usually I use my phone to get help with my studies.And it wasn't until yesterday this happened. So will I have to post it as a new question,every time I want to ask ...


1.“Follow-up” or “followup” can be a noun or an adjective. A) True B) False I answered A 2. Select the 2 correctly punctuated sentences: A) His followup appointment is in 2 weeks. B) His follow up appointment is in 2 weeks. C) His follow-up appointment is in 2 weeks. I...

Chem Home Work Help!

I am a bit confuse with a question from a home work that I need to do by today please help! HW question... 1) A sample of neon gas occupies 8.77 L at 20°C. What is the pressure, in atmospheres, exerted by 1.45 mol of this gas? When you've gotten the answer to this question ...


I have a really urgent question. I am wondering wheter or not esters are polar and what types of intermolular forces they have. can anybody answer this question nvm

Chem simple question

how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL I know the answer came out to 20.4 ml My only question is how do I convert HCL to Sr(OH)2

Math-to Steve

I posted a follow-up question to your response at my post available at, display.cgi?id=1501575066 Hope you saw it! Thank you!


In writing and balancing equations using sulfur chemists usually use the empirical formula, S, rather than the molecular formula. Why? I'm not sure how to answer this question.


1. What evidence did ancient Greek astronomers have that Earth does NOT move? The answer is because of the lack of parallax, but then there's a follow-up question... 2. How do we knoew it DOES?

Grammar and hyphens

Select the sentence which is correctly punctuated. A) He will follow-up in 4 weeks. B) He will follow up in 4 weeks. My answer is B

org. chem

The question asks, "draw the hemiacetal obtained by addition of ethanol 2-methylpentanal" My question is how to do this problem? I know you can't actually draw it out on this site. However so I know how to do it on the upcoming test. Thanks :)

science(chem 11)

did a lab on separation of salt and sand. the initial mass that my teacher gave me was the stock mixture that was: salt= 54.79g; sand= 97.90g. after the experiment my mass were as follow: salt= 1.35g; sand= 3.17g. question #1 was asking about the % composition of the mixture ...

Language Arts (help Ms. Sue)

•What traits do leaders have? •What motivates individuals to follow the crowd? •How can others help us understand our own behavior? •When is it good to follow what others are doing? When is it bad to be a follower?


Follow up to Angie's question? If both sides are not = then why is there an equal sign? And is the answer 2 or both 2 and -1? Thanks!

another chem question

Examine the following unbalanced chemical equation: CO(little2) + C --> CO Which of the following is the correctly balanced form of this equation? 2CO(little2) + C --> CO CO(little2) + C -->2CO CO(little2) + C(little2) --> CO CO(little2) + C -->C(little2)O ...


I have a question for chem 1LD webworks number 4. it asks to repeat the previous question steps and find the delta H for the high spin and low spin for Fe(ox)3 3- but calculate with B3LYP, 6-31G* instead of a semi-empirical


what is the verbal phrase in this sentence? Victoria taught Priscilla to swim with the family dogs. Is it to swim with the family dogs or just to swim? In this sentence, what is the verbal phrase? He decided to follow Carol and the pig into the deep water. Is it to follow or ...


Select the correctly punctuated sentence: A) He will follow up in 2 weeks. B) He will followup in 2 weeks. C) He will follow-up in 2 weeks. Answer A


For the question(s) that follow, consider the following equation. 2Mg + O2¨ 2MgO How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg?


I had a Bio lab about gel electrophoresis and PCR. for each lab, we have to make up thoughtful, detailed questions. You don't have to answer the questions so please don't go through the trouble by answering them. The first question is about something we did in lab. My question...


These sets of numbers all follow logical patterns. Which numbers replace the question marks? ( 00001, 00011, 00101, ?, 01001 )


The rate constant for a reaction is 4.65 L mol-1s-1. The overall order of the reaction is: zero first second third I am having trouble with the order of reactions. I don't understand this question. this is an assignment question but i have no idea how to do it.

y912f / Spanish

Please go back to those two where I asked you to follow the 4 steps. I will NOT supply the answers until you do that! You need to proove to me that you can and will follow those 4 steps first! Sra

What does the question in my post mean?

What does the following question mean? -- How can you live within a democracy that expects you to participate, to hold an opinion and vote and thereby control and be responsible for your society—but at the same time, you must surrender and follow the will of others if even ...


These sets of numbers all follow logical patterns. Which numbers replace the question marks? ( 1, 8, ?, 64, 125 ) ( 00001, 00011, 00101, ?, 01001 ) ( 17,23,?,18,20,25,21,9,15,16 )


These sets of numbers all follow logical patterns. Which numbers replace the question marks? ( 1, 8, ?, 64, 125 ) ( 00001, 00011, 00101, ?, 01001 ) ( 17,23,?,18,20,25,21,9,15,16 )

Algebra-Another question

Evaluate 4log(4)8 Possible answers are: 4 0 8 1 Where do I start-I don't have an example to follow? Please give me a direction do I evaluate log(4)8 first


first, thanks so much Bob for helping me!!!! will be asked to prepare 25.0 mL of a 0.019 M solution of sodium chloride during this experiment.... a.calculate mass of sodium chloride needed to prepare solution. (0.25L)(0.019M NaCl/L)*(58.5g NaCl/1mole NaCl)=0.278 g NaCl...

Basic chem question

3dz2 how many orbitals can this have?? what is the z?


no typeo dr bob... the question reads.. 0.788g/cc


Hyphens are so confusing, so I'm asking for a little help. 2. Select the sentence which is correctly punctuated. A) He came in for his follow up. B) He came in for his followup. My answer: B 4. Select the sentence which is correctly punctuated. A) He will follow-up in 4 weeks...

physics - follow up question

so, (3.75)(4) + (.5)(3.75)(49) or 106.875 radians that's not the correct answer, so is it just the second part to find the additional angle? (.5)(3.75)(49) = 91.875 but it too is incorrect, what am I missing?


Follow on the Sall Sue question earlier. What frequency would be required for sally and her cheerful and hard-wroking partner to produce the standing wave with three nodes. Identify the steps.

Calc pt2

Original question: Posted by Lost One on Tuesday, March 5, 2013 at 12:04pm. Let f(x) = (2/3)x^3 - 2x + 1 with a restricted domain of [1,infinity]. What is the value of (f-1)'(x) when x = 13? •Calc - Steve, Tuesday, March 5, 2013 at 12:58pm since x = f^-1(y) and dx/dy = 1/y' ...


Responded to the original post and follow up at original site. If you have trouble finding it I can come back and paste the asnwer here. !


Dr bob, can you check my reply to chem question from andy thanx

honors Chem B

How do I find specific heat? from previous question.


no question - just thank you "drbob", you've answered a few of my questions.

english--Please help me!!!

"Most Americans would follow a thinker rather than become one themselves." Please help me explain that sentence, and also give me examples!!!who is a thinker?? in what situation do they follow the thinker, and why????

us history

The Insular Cases stated that a.island territories do not have the full benefit of the American Constitution. b.the Constitution does not necessarily follow the flag. c.the Constitution does follow the flag. d.none of the above were true. I think it is B


how do u set up with problem How would you prepare 165 mL of a 0.0317 m solution of benzoic acid (C7H6O2) in chloroform (CHCl3)? Just follow the definition of molarity. M = mols per L of solution I am assuming the m is molarity. But if it is molality, then molality is mols per...

General Chem

So for Chem we have to answer a question asking why graphing is a more accurate method for measuring density than manually calculating the density. I originally thought that manually calculating was better, but my teacher told me that I would have to back that up with a lot of...

Advice...about chemistry degree Dr.Bob

Based on the question topic posted by Britney below titled:In your opinion (your answer to this reminded me of something) (I posted the same thing there but I thought it was improper to piggyback on that post so I posted this under a new topic) I don't know where to start but ...

Chem Question?

I answered this question already, but would like you to check if the answer I provided was right. If for some reason my answer was not right please provide me with the right answer. 1)The air in the inner tube of the tire of a racing bike has a pressure of 115 psi. Convert ...


When the question asks for the qualitative pH of NH3, how would I find the answer?

science again last question

Can a chemical characteristic for the element Neon be that it is toxic to the air? thanks agian and that's the last question!! thank you!!! I'd say not. Try the chemical or physical properties listed here: I don'...


ndicate which species in each pair has the higher ionization energy. Choose at least one answer. a. Between K and I, I b. Between K and I, K c. Between Al and Al+, Al d. Between Al and Al+, Al+ e. Between Ar and Cl-, Ar f. Between Ar and Cl-, Cl- g. Between Mg and Ca, Mg h. ...

Please check my answer(Social Studies)

In the Mayflower compact, why do the pilgrims "all due submission and obedience"? To show that they will remain sevants of God To show that they will follow the colony's rule•• To show that they will elect a colonial leader To show that they will follow the king of England

Road surface

Follow-on from a previous question: is there a component of any vertical force resulting from the braking force a braking vehicle?


help me i hev a lab You need to post a question with details about what yo don't understand.

basic chem lab question

what is the mass of a typical 50 ml glass beaker in grams


Hi in this question A typical intravenous dose of I-125 for a thyroid diagnostic test is 100 u Ci. What is this dosage in megabecquerels (MBq)? (3.7 x 1010 Bq = 1 Ci) my book solved it like this: 100 u Ci * 1Ci/1x10^6uCi * 3.7x10^10/1Ci * 1MBg/1 x 10^6 Bq = 3.7 MBq. My ...

I have a question concerning Spring Semester

Im a freshman in college and I just took Chem1, Trig, and Drama (12units). I am planning on taking Chem2, Pre-Calc, and Art1 for spring sem. (13units). I'm not sure if this is too much to take for next semester considering two five unit classes or should I add another class? ...

third grade hw help

My third grade is needing help with his science homework please the question is as follow List as many resources as you can that you use during one day? Thanks!

chem lab

I'm doing a lab on helium and hydrogen emission spectra. so I got violet 20.35cm blue/green 21.70cm green 22.75 light green 23.08 yellow 27.70 red 31.70 faint red 33.95 and I also have the wavelenghts for helium spectra, its given. like for ex. violet is 380-420, my question ...


this is a follow up question from my last one with the exact question If you dissolve 200 g of salt in 20 l of water, what is the density of that solution of salty water? Hint: In this particular example, assume that the total volume doesn’t change when salt is added to ...


I am a co-op student in a Grade 1 class have been preparing lessons have to develop a language lesson on Valentine's Day vocabulary and follow up with an activity I am being tested on this I just need a good idea once I have the idea the rest will follow

Health (Ms. Sue)

Compare the steps you should follow when helping a choking adult with those you should follow when helping a choking infant.

Health (Ms. Sue)

Compare the steps you should follow when helping a choking adult with those you should follow when helping a choking infant.

to bobpursley

My classmates friends want me to post their questions as well.Thats why there are multiple names is there a problem. Yes. You are posting duplicate or even triplicate questions. That is silly. If we have answered one, the answers to the others follow. People here are ...


sir, there was a question in my biology test that required us to draw a graph of concentration of sucrose solution against rate of reaction. so how do I plot the graph? If i follow the question's requirement, i have to put the concentration of sucrose solution as the y-axis ...


sir, there was a question in my biology test that required us to draw a graph of concentration of sucrose solution against rate of reaction. so how do I plot the graph? If i follow the question's requirement, i have to put the concentration of sucrose solution as the y-axis ...


Hi , I have this question and I do not know what steps to follow. Please help guide me. It will be really appreciated. Calculate the extent of oxidation in a stream where water it's in equilibrium with atmospheric oxygen and had a pH pic 6.5 (a(H3O+) =antilog (-6.5) ). The ...

physics: BOB or DRWLS follow up question

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?

Chem Help PLEASE!

Asked earlier but got no reply :/ hopefully I get one now cause I'm really stuck and can't completely my assignment cause of one question.. How many grams of dry NH4Cl need to be added to 1.90 L of a 0.200 M solution of ammonia, NH3, to prepare a buffer solution that has a pH ...


Calculate the H+ ion concentration given the following pH readings: a) 2.00 b) 9.50 c) 10.40 d)-125(is this a reasonable question neee help


Follow this link please! It is an interactive question that I just cannot figure out

DrBob222-re: chem question

Sorry, I did make an error when I posted the earlier question: It should have said: A solution has [OH-] = 2.0 x 10-^14 M. The [H+] in this solution is? I hope you can help. Thank you. Sorry about the earlier error.


key contributors to Christianity's's impact on philosophy Here's an interesting response to this same question. There are some good ideas here to follow up on. Please note that we don't do students' ...


What do question about Aluminum, hand this is some general question about it can someone help me to answer them Why is it wise to clean the aluminum? Why is the reaction done in the hood? Why must suspended solids be removed from the basic solution? Why is an ethanol-water ...


I have a question on this question would I forgo the sqaure root on this on because there is no sqaure except on the products side which is 2HI? I am lost because I set up ICE then got to: 54=(4X-0.09)^2/x*x Kc=[HI]^2/[x][x] At a particular temperature, Kc = 54 for the ...

vocab help

i need 3 sentences using wretched plz help Please do not post the same question twice. Please follow directions below and let us know what you have come up with. We will give you feedback on the sentences you write.


When you are driving a golf ball,a good follow-through helps to increase the distance of the drive. A good follow-through means that the club head is kept incontact with the ball as long as possible.Why does this technique allow you to hit the ball farther ?


Hi Steve, You helped me with a question earlier today about finding surface area of a triangular prism with the base being an equilateral triangle . I got the answer 386.6 Is this correct.? I tried to follow your equation and am having a bit of trouble. Thanks for all your help.


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