# Posts by Tom

Total # Posts: 1,423

**chemistry**

Captain Kirk, of the Starship Enterprise, has been told by his superiors that only a chemist can be trusted with the combination to the safe containing the dilithium crystals that power the ship. The combination is the pH of Solution A described below, followed by the pH of ...

**chemistry**

A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in contact with a saturated solution of calomel (Hg2Cl2...

**Chemistry**

how do u use Solution B to solve for the Ka?

**Chemistry**

Captain Kirk, of the Starship Enterprise, has been told by his superiors that only a chemist can be trusted with the combination to the safe containing the dilithium crystals that power the ship. The combination is the pH of Solution A described below, followed by the pH of ...

**Chemistry**

Where can I find a picture of the molecular orbital diagram for OH-?

**Physics**

can someone explain how a "solenoid" wire works?

**English **PLEASE HELP****

In Romeo and Juliet, I remember there was something with the disruption of time. Something made the timeline of the play very confusing...can some1 explain? I think it had something to do with Juliet's wedding

**chemistry-confirm please**

Only a chemist can be trusted with the combination to the safe containing a ton of money. The combination is the pH of solution A, followed by the pH of solution C. (for example: is the pH of solution A is 3.47 and the pH of solution C is 8.15 the combination to the safe is 3-...

**chemistry-Please confirm this**

I'm pretty sure that OH- has a bond order of 1. OH+ has a bond oder of 1. confirm this please.

**Math**

A traingle has an area 48sqaure cm and its shorter sides have lenghts 9 cm and 12cm. Find the largest angle of the triangle

**chemistry**

What is the bond order of OH- and OH+? I tried to solve it but couldn't so Im about to give up. Help me please.

**admission policies**

I am having to write a paper on when admission policies are made for schools. there no specific school it is all in general do anyone have any idea where I go and find some answers to this any help I am really lost on this.

**Probability.**

Sorry for posting so many topics, but I really need help on this stuff. I recently lost my work I did on a separate sheet from 2 weeks ago, and now I can't seem to find the answer again. a fair six-sided die is tossed seven times in a row. A) What is the probability that a...

**Test tomm. Need help *Urgent***

Sorry for posting so many topics, but I really need help on this stuff. I recently lost my work I did on a separate sheet from 2 weeks ago, and now I can't seem to find the answer again. a fair six-sided die is tossed seven times in a row. A) What is the probability that a...

**TEST TOMM. NEED HELP IMMEDIATELY. PROBABILITY**

A fair coin is tossed ten times in a row. What is the probability that "heads" comes up at least eight times? I got an answer of 7/128, but I lost the paper with the work I showed. Can someone refresh my memory please?

**Probability. NEED HELP!!!**

What is the probably that a five-card hand dealt from a standard deck of cards will include four cards of the same alue? (This is called a "four of a kind" in poker)

**Probability**

I've tried but i need help =/

**Probability**

An urn contains 7 red marbles labeled {1,2,3,4,5,6,7} and 5 green marbles labeled {1,2,3,4,5}. Four marbles are pulled out at once. What is the probability that A. All four marbles are red? B. More of the marbles are green than red? C. Both red and green marbles are present? D...

**English-Literature**

What is the "American Dream"? Where did it originate, how has it caged over the centuries?

**Science**

Effect of Food habits on GIT problems of Adolescence

**GEN 300**

describe your optimal learning times and optimal learning environment can someone please explain to me what my instructor might be wanting in this section I have read all the materials and I can not find nothin he might be looking for

**Chemistry**

Which of the following is the formation reaction for CaO(s) ? A. Ca2+(aq) + O2–(aq) CaO(s) B. Ca(s) + .5O2(g) CaO(s). C. CaO(s) Ca(s) + .5O2(g) D. 2 Ca(s) + O2(g) 2CaO(s) E. 2 CaO(s) 2 Ca(s) + O2(g) Left with B and D. Please Help

**Chemistry**

Which of the following is NOT true about the thermodynamic standard state? A. A solid is in its standard state when the atmospheric pressure is 1.00 atm and the temperature is 25C. B. A pure liquid is in its standard state at 25C and a vapor pressure of 1.00 atm. C. An ...

**chemistry**

Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons) with a ...

**Chemistry**

Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. B. H-O-H and C-O-H bond angles are all equal to 1095. C. Dispersion forces ...

**math**

why dos presidents put vegetables in his blender

**Accounting II**

Does anyone know how to calculate cost of savings when calculating the net present value? The NPV was given and I have to backed into the other figures. The only thing about cost savings provided is "25% reduction in direct material. The DM cost listed is $10. I tried ...

**chemistry**

a sample consisting 22.7g of a nongasous unstable compound X is placed inside a metal cylinder with a radius of 8Cm and a piston is carefully placed on the surface of the compound so that for all practical purposes the distance between the bottom of the cylinder and the piston...

**chemistry**

is this then equal to the Ka of the acid solution?

**chemistry**

oh ok.. thanks so much... So when you have the pH of a substance the [H^+] is always equal to 10^-pH?

**chemistry**

if the pH of a half-neutralized acid solution is 5.4, how would you find the [H+] of the the solution. There is 1.0 g of L-ascorbic acid which was dissolved in 100 ml of water. That solution was split in two and 50 ml of the solution was titrated with 0.2 M NaOH (13 ml NaOH). ...

**physics**

I did a lab on the potential difference and how it relates to the number of batteries connected. What would be a good title for my lab?

**english**

• The article I chose is: how stuff works – communication. The type of introduction that the writer used was to include interesting facts about the subject. He also gave animated illustrations to show how telephone communication works. The kind of impact his ...

**math**

1. (sinx/cscx)+(cosx/secx)=1 2. (1/sinxcosx)-(cosx/sinx)=tanx 3. (1/1+cos s)=csc^2 s-csc s cot s 4. (secx/secx-tanx)=sec^2x+secxtanx 5. (cosx/secx-1)-(cosx/tan^2x)=cot^2x

**Physics**

yes.

**Physics**

I just did a lab on potential difference/voltage, resistance, and current. What would be good title for my lab? Thank You.

**Science**

I need to develop a management and sustainment plan that you think will alleviate water pollution, any ideas where I would start?

**Physics**

Try this one. you seem to have forgotten about the coeficient for copper pipe. Remember volume gained (reservoir) equals volume lost (pipe) deltaV =beta_water x V_i x deltaT this gives the change in V for water then deltaV = beta_copper x V_i x deltaT this gives the change in ...

**criminal justice**

Do we even need Miranda anymore, doesnt everyone already know the warning?

**criminal justice**

Imagine you were an officer confronted with a hostage situation. Explain how you would use the twelve stages explain how you would use the twelve stages of conflict resolution, and what effective strategies you would use to bring about a positive resolution. Before you address...

**criminal justice**

Hearing Impaired - I believe all officers are trained in the very basics of sign language; I could be mistaken. Gang Members - Most all Law Enforcement Agencies in areas with high gang activity have a Gang Unit. Elderly – You must have patience.

**criminal justice**

how criminal justice professionals can best communicate with person's with hearing impairments, gang members, and the elderly

**communication in criminal justice**

Describe functions of organizational networks and specialized criminal justice databases, recognizing that technology is rapidly becoming more important in the field of criminal justice

**Interpersonal Communication in Criminal Justice**

Escobedo actually asked for an attorney and was refused. His confession was thrown out. Miranda ruling was that all suspects must be given their rights in a form that they can understand. Two years later Congress tried to weaken Miranda in Federal cases. They protect the ...

**Interpersonal Communication in Criminal Justice**

Could someone critic this for me? Escobedo v. Illinois came first when he filed a case against the State of Illinois because they did not allow him access to an attorney after having been arrested previously on the same charge of murdering his brother-in-law. In the Miranda ...

**Interpersonal Communication in Criminal Justice**

The Escobedo and Miranda Laws are landmark court decisions that impact the manner in which law enforcement int Question Details: What is the relationship between the two? What was the impact of both decisions in terms of interviews and interrogations of a suspect? What statute...

**Math**

3x^3 -15x^2 -13x-4 what are the zeros of this problem?

**criminal justice**

Does anyone have any information on Mark Fuhrman that you can provide from the O.J. trial. What role did he play in this case?

**Physics**

the diagram I drew looked nothing like that.The mirror is on the bottom, and B is in the middle, and A is on the left bottom corner. S is on the upper left corner, and F is on the upper right corner. There's 30 cm between each point. There's some triangles.

**Physics**

S +\ + /+F + \ + / + 30cm+ \ + / +30cm + \ + / + +--- \--+-/----+-mirror A 30cm B 30cm a^2 = b^2 = c^2 I don't know where to go from here

**Physics**

Find the distance light travels from its starting point, S to its final point, F by traveling two different paths: Reflecting from point A, and reflecting from point B. From point S to A is 30 cm, from point A to B is 30 cm, from point B to F is 30 cm, and from the mirror to ...

**Human service**

Why are integrated information management systems important in human service organizations? Give an example to support

**Shiv**

Randall is playing a game that involves drawing a card from a deck. There are 10 cards numbered from 1 to 10. If Randall draws a card with a multiple of 3, he wins 5 points. If he draws any other card, he loses 3 points. What is Randall's expected point score when he draws...

**Math**

A rocket is launched upward and then falls to the ground. The height of the rocket above the ground is h= -16t^2 - 400t where h is the height of the rocket in feet and t is the number of seconds of the flight. How many seconds will it take for the rocket to fall back to the ...

**human services**

How are data and information used within the human services organizations to support organizational planning?

**criminal justice**

Could someone give me an example of how to create an incident report about a bank hold-up, using well constructed paragraphs, logical transitions, consistency, and professional tone. only two tellers were in the bank at the time of the robbery. give details on who what when ...

**criminal justice**

create an incident report about a bank hold-up, using well constructed paragraphs, logical transitions, consistency, and professional tone. Only two tellers were in the bank at the time of the robbery. answer the question who, what, when, where, why, and how.

**physics**

5400

**health**

is soda good for you, like 10 cans of coke per day

**physics**

Two charged bodies exert a force of 0.390 N on each other. If they are moved so that they are one-third as far apart, what force is exerted? is it .390 times 3??

**phyical science.**

Trailer towing tongue weight 350 New hitch is 5 inches further out. what is the formula to determine the load with the hitch 5 inches out?

**pre-cal... compound interest and modeling data**

2% - 54.93 4% - 27.47 6% - 18.31 8% - 13.73 10% - 10.99 12% - 9.16

**chem**

Yesterday, Jason had a sample of helium indoors (T = 23oC) in a sealed container, with a pressure of 760 mm Hg. He got bored and took the container outside, where the temperature was a blistering 35oC. He calculated the new pressure to be 750 mm Hg. Jason knew that this answer...

**Statistics**

12

**Algebra**

A tcar left Purm and traveled west at 70 km/h. Two hours later another car left purm and traveled east at 90km/h. How many hours had the first car traveled when they were 1420 km apart?

**physics**

Can a resultant of two vectors be negative?

**science-physics/math**

What is the largest possible displacement resulting from two displacements with magnitudes 3 m and 10 m? do you have to use a^2+b^2=c^2 What is the smallest possible resultant?

**accounting**

There are 52 weeks in a year. One quarter of that is 13 weeks. 13 weeks times $720 equals $9,360. 30% of $9,360 is $2,808.

**science**

If I were an ion, would you be a youon?

**Word Problem**

What is the largest area that can be enclosed? This is not just a calculus problem it's a zoning problem. If the city's Zoning Board doesn't approve the type of fencing the developer wishes to use, then the largest area that can be enclosed is exactly 0 feet.

**spanish..i need help**

Well we know they didn't go to Argentina for the Chili, so they must have gone there for the refried beans.

**Math**

Just draw one horizontal line through each row, and then draw one vertical line through any vertical row.

**SOCIAL STUDIIES**

If you need to know about the Lost Colony in 1585, you're 422 years too late.

**Chemistry**

additonal info: I need he word of chemistry. I have the words and i have a theme. My theme is cooking. So please i need some analogy's that deal with cooking for these chemistry words.

**Chemistry**

Atom-Particle that cannont be divided in half becasue it is in its smallest form. Reactants-Substances that exist before the reaction begins. Endothermic Reaction-take in, or absorb heat energy. Exothermic Reaction- Release Heat energy Inhibitor-makes a reaction slower. Rate ...

**Please help!**

your numbers make no sense, what are they estimated to be?

**Geography**

Explain why urban exclusion appears to be growing in large cities. I thought along the lines of large cities=large populations=larger observable spatial inequalities= more urban exclusion. Is this any help?

**SUVs and Cars (Math)**

Nevermind I found out; basically the 1.947 is intuitive by countering out the S

**SUVs and Cars (Math)**

Where did the 1.947 come from?

**Studies of Society**

What would happen if bird flu made it into the australian bird population?

**Materials**

What is the thermal expansion of brass per deg F? http://www.engineeringtoolbox.com/thermal-expansion-metals-d_859.html http://www.engineeringtoolbox.com/thermal-expansion-metals-d_859.html

**business**

create a table day by day plan to use for a job aid for employment

**chemistry question**

Classify each of the follwing by the type of solid(molecular, ionic, metallic, covalent network)it will form: a) Na b) Fe c) SiO2 d) H2O E) KF The result that I got are : a) Na (ionic solid) b) Fe (metalic solid) c) SiO2 (covalent network) d) H2O covalent network)) E) KF (...

**chemistry**

Classify each of the follwing by the type of solid(molecular, ionic, metallic, covalent network)it will form: a) Na b) Fe c) SiO2 d) H2O E) KF The result that I got are : a) Na (molecular solid) b) Fe (metalic solid) c) SiO2 (ionic solid) d) H2O (ionoc solid) E) KF (covalent ...

**chemistry**

What kind intermolecular force do you expect in the following substance? 1. Hydrogen iodide 2. Kryptone 1. strong, due to polarity of the electrostatic bond in HI 2. Weak, due to the complete electron shells of Kr. It does not easily acquire or lose electrons, and its ...

**algebra**

x=9 y=3

**algebra 2**

Science and medicine. Find the time required for an object to fall to the ground from a building that is 1400 ft high. using the formula : t = 1/4 radical (s) t=1/4 radical 1400 t= 10 radical 14*1/4 t= 5 radical 14 /2 what are I doing wrong I am suppose to be getting minutes ...

**Algebra word problem**

I have no idea how to start this problem can some one explain to me am i suppose to divid 1/10 by 1/4 which i get 4 but i feel i am missing some thing am i am Fungicides account for 1/10 of the pesticides used in the United States. Insecticides account for 1/4 of all the ...

**chemplz**

At 462degrees, the reaction (1) heat + 2 NOCl(g) <=====> 2 NO(g) + Cl2(g) has an equilibrium constant, Keq = 8.0 x 10-2. a) What is Keq at 462degrees for the reaction 2 NO(g) + Cl2(g) <=====> 2 NOCl(g) 1/Keq may I ask how did you get this answer? Keq for the ...

**physics**

you mean 5.67*10^-8

**algebra**

A cylinder has a radius of 5 in. if the volume of the cylinder is 250pi in ^3 what is the height of the cylinder V=pi r^2 h 250=pi*5^2*h 250=5pi*h 250=5hpi 250/5pi=5hpi/5pi h=50/pi h = V/Area = 250 pi/(pi*5^2)= 10

**Accounting**

what is accountability and what is its relationship to a) accounting b) an organisation's responsibilities? thx

**word expressions**

2 times a number, increased by 28 is less than or equal to 6 times that number is this how i should write this 2*x+28<6*x Yes, that is correct. It can be rewritten as 4x > 28 x > 7

**algebra**

Nine more than the sum of six minus a number and five equals twenty-one I am sorry I hit the wrong button and it sent it before i finished can some tell me if i have writen this problem right i think it goes 21=6-x+5+9 would this be they way i write it so i cqan solve it ...

**algebra**

solve each literal equation for the indicated variable linear equation for x 2x+3y=6 can some one give me a example and show me how the steps go to solve this problem please Subtract 3y from both sides of the equation, and then divide both sides by 2.

**algebra help**

The revenue for selling y units is R=3y^2-2y+5 and The cost of producing y units is C=y^2+y-3 . Find the expression that represents profit. can someone explain to me how to solve problems like this i have few of these needing to know trhe steps Profit is revenue minus Costs. ...

**algebra 1 help**

6(-3-2)^2 over -3^2-2(-3)(2)+2^2 6(-3-2)^2 over -3^2-2(-3)(2)+2^2 6(-5)^2 over -9+12+4 6(-5)^2 over 3+4 6(25)^2 over 7 6x150 over 7 900 over 7 am i correct with this can i go any further . 6(-3-2)^2 over -3^2-2(-3)(2)+2^2 6(-3-2)^2 over -3^2-2(-3)(2)+2^2 6(-5)^2 over -9+12+4 6...

**pre-algebra**

Solve the inequality- -7z<21 See my answers to Jill and Sarah. I hope this helps. Thanks for asking.

**what is the difference**

what is the difference between 14kt gold and 14k gold and what one is the better gold Both are the same thing Thank you for using the Jiskha Homework Help Forum. In addition to the answer you already have, look what might happen if you don't distinguish between lower and ...

**Maths**

use the formula cos(x+iy)=cosxcosiy-sinxsiniy to find two imaginary numbers whose cosine is 3 cos(x+iy)=cosxcosiy-sinxsiniy = cos(x)cosh(y) - i sin(x)sinh(y) = 3 Equating imaginary parts gives: sin(x)sinh(y) = 0 You know that y cannot be zero, otherwise the complex number ...