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Kelsey

Questions and answers by Kelsey

Questions (314)

2H2O2 --- 2H2O + O2 is this a redox reaction if so what is the oxidized reactant and reduced reactant
1. 4 answers
2. 8,916 views
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes
1. 4 answers
2. 4,410 views
Name at least three products that are used to manufacture automobiles or trucks?What government imposed barriers stop or hinder
1. 7 answers
2. 572 views
Why should the 3 R's be rehabilitated?Thank you for using the Jiskha Homework Help Forum. If, by the 3 R's, you mean "Reading,
1. 1 answer
2. 490 views
I just finished reading "By the Waters of Babylon" by Stephen Vincent Benet and I have no idea what any of it means. I don't
1. 1 answer
2. 445 views
True or False:Einstein's general theory of relativity explains that light is unaffected by gravity. Fill in the Blank: Newton's
1. 1 answer
2. 579 views
light affected by gravity in einsteins general theory of relativityLook below at yopu previous post. I tried again
1. 1 answer
2. 397 views
Can you please tell me if this is a simple, compound, complex or compound-complex sentence. And can you please tell me why it is
1. 1 answer
2. 710 views
i need answers to these ?s below about Great Gatsby.. any of the answers would be nice and ill do anything PLEASE!!Chapters 4-6
1. 1 answer
2. 784 views
I was wondering how do I tell when a word has a silent e in it? Does the word 'welcome' have a silent e in it? Thank you!Yes,
1. 1 answer
2. 505 views
Tickets to the school musical cost $3 for students and $5 for non students. Total ticket sales were $1790. The number of student
1. 3 answers
2. 946 views
I have to write two lines of poetry in iambic tetrameter and I am not sure if this is correct or not. Any help would be greatly
1. 3 answers
2. 539 views
The question I need help with says "rewrite the following sentences, correcting errors in sequence of verb tenses" and the
1. 2 answers
2. 546 views
The question is: The fact that the girls danced in the woods outrages Parris. I have to change "the fact that the girls danced
1. 6 answers
2. 689 views
WHAT IS THE DIFFERENCE BETWEEN COVALENT BONDING AND IONIC BONDING????
1. 1 answer
2. 394 views
How can Nitrogen and oxygen form nitrogen dioxide if both nitrogen and oxygen have a negative charge?
1. 2 answers
2. 560 views
How would you prepare 1.00L of 0.13m solution of sugar, C12H22O11? The density of the resulting solution is 1.10g/mL.m=molality
1. 3 answers
2. 1,055 views
A particle is moving at some constant speed. Use the following information to answer the following questions.s(t)=100/t©÷+12;
1. 3 answers
2. 932 views
What happens when a cold surface water current collides with a warm surface water current?
1. 4 answers
2. 292 views
You're supposed to graph each equation when,2x+3y=9
1. 1 answer
2. 294 views
How would I find the expression of the nth term sequence given the terms of 2, 1, 4/5, 5/7, 6/9 and the expression of the nth
1. 2 answers
2. 569 views
I need help solving this logarithmic equation: ln x + ln (x+3) = 1.I know ln x + ln (x+3)=ln [x(x+3)] and that is ln x^2 + 3x
1. 3 answers
2. 401 views
I need help with this problem:Two planes start from Los Angeles International Airport and fly in opposite directions. The second
1. 4 answers
2. 1,000 views
I need help with these probability problems.1). Five chips are selected from a bag without replacement. The bag originally
1. 4 answers
2. 935 views
How would I graph the inequality x<2y-y^2 or is there even a way that I could graph it?
1. 1 answer
2. 442 views
What mammal order has the following dental formula 006/406
1. 1 answer
2. 365 views
How do I write a movie title in an essay? I am trying to write about the giant keyboard in the movie BIG. Do I put quotes around
1. 2 answers
2. 883 views
what part of speech is about?what part of speech is (is)?
1. 1 answer
2. 437 views
what is the longest multiplication combination for 120
1. 6 answers
2. 692 views
Part 1 Chapt 41. You dissolve 157.1 g of ammonium nitrate in a 250 mL volumetric flask and add water to the mark (call this
1. 1 answer
2. 665 views
1. You dissolve 157.1 g of ammonium nitrate in a 250 mL volumetric flask and add water to the mark (call this solution A). You
1. 1 answer
2. 625 views
You dissolve 157.1 g of ammonium nitrate in a 250 mL volumetric flask and add water to the mark (call this solution A). You take
1. 2 answers
2. 586 views
Zn(OH)2 solid (molecular mass = 99.41 amu) is added to 0.500 L of 0.50 M HBr. The resultant solution which is acidic, requires
1. 2 answers
2. 682 views
Prove: if th bisector of an angle whose vertex lies on a circle passes through the center of the circle, then it is the
1. 4 answers
2. 1,360 views
describe what happens to the graph of y=X^2 in the following situations.a. y is replaced with (y+1) b. x is replaced with(x-5)
1. 1 answer
2. 437 views
What is the probability of selecting a boy and a girl if their are 7 girls and 3 boys.
1. 1 answer
2. 476 views
Consider the graph of the equation y=ax^2+bx+c, when a does not equal 0. If a is multiplied by 3, what is true of the graph of
1. 4 answers
2. 2,991 views
At what rate will $150 double itself in 14 years? do I solve this?
1. 1 answer
2. 342 views
I am just editing my essay for my one class and this is a question I always get stumped on which is the proper way.Would a comma
1. 3 answers
2. 456 views
My teacher says to take booknotes on To Kill a Mockingbird but I don't know what booknotes are?
1. 1 answer
2. 351 views
Something that is tangential to getting good results:a. drinking tea b. proper planning c. paying attention d. working hard a.
1. 9 answers
2. 580 views
A man is walking away from a lamppost with a light source h = 6 m above the ground. The man is m = 1.5 m tall. How long is the
1. 3 answers
2. 2,773 views
how do i find the perimeter of a triangle with missing measurements? i have no clue how to do this!
1. 1 answer
2. 360 views
3 facts about motion
1. 5 answers
2. 471 views
Does this look correct? Thx!Write the balanced equation for the reaction between solid copper and silver nitrate, that produces
1. 2 answers
2. 556 views
I'm not sure how to answer this question....Assume that magnesium would act atom-for-atom exactly the same as copper in this
1. 2 answers
2. 852 views
I don't remember my instructor going over this and the book isn't explaining it very well. Can anyone help answer these?Indicate
1. 4 answers
2. 5,910 views
We are learning Indirect object pronouns and I need help with the following questions.Traduce las frases al espanol. 11. He
1. 3 answers
2. 474 views
For every 25 mm of rain falling on the avarage home, 5000 L runs off the roof. Some people use barrels to collect this rain
1. 2 answers
2. 498 views
Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0
1. 2 answers
2. 569 views
Tarzan swings on a 27.0 m long vine initially inclined at an angle of 33.0° with the vertical.(a) What is his speed at the
1. 5 answers
2. 982 views
When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for
1. 4 answers
2. 1,505 views
A 770 N man stands in the middle of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of
1. 3 answers
2. 560 views
Tarzan swings on a 27.0 m long vine initially inclined at an angle of 33.0° with the vertical.(a) What is his speed at the
1. 4 answers
2. 755 views
Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string. (one mass is on the incline, the
1. 1 answer
2. 1,290 views
A skier of mass 76 kg is pulled up a slope by a motor-driven cable.(a) How much work is required to pull him 40 m up a 30°
1. 3 answers
2. 1,434 views
A dentist's drill starts from rest. After 3.00 s of constant angular acceleration it turns at a rate of 2.8 104 rev/min.(a) Find
1. 2 answers
2. 759 views
A car initially traveling at 31.0 m/s undergoes a constant negative acceleration of magnitude 2.00 m/s2 after its brakes are
1. 2 answers
2. 970 views
(a) What is the tangential acceleration of a bug on the rim of a 6.0 in. diameter disk if the disk moves from rest to an angular
1. 4 answers
2. 1,022 views
(a) What is the tangential acceleration of a bug on the rim of a 6.0 in. diameter disk if the disk moves from rest to an angular
1. 2 answers
2. 786 views
During what period of life does immunocompetence develop?
1. 1 answer
2. 371 views
Objects with masses of 190 kg and a 490 kg are separated by 0.380 m.(a) Find the net gravitational force exerted by these
1. 2 answers
2. 885 views
A satellite moves in a circular orbit around Earth at a speed of 4390 m/s.(a) Determine the satellite's altitude above the
1. 3 answers
2. 693 views
A satellite moves in a circular orbit around Earth at a speed of 4390 m/s(a) Determine the satellite's altitude above the
1. 3 answers
2. 721 views
A rubber ball filled with air has a diameter of 25.1 cm and a mass of 0.618 kg. What force is required to hold the ball in
1. 3 answers
2. 1,153 views
A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can
1. 2 answers
2. 1,075 views
(a) An ideal gas occupies a volume of 1.6-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the
1. 4 answers
2. 1,395 views
A brass ring of diameter 10.00 cm at 19.9°C is heated and slipped over an aluminum rod of diameter 10.01 cm at 19.9°C. Assume
1. 1 answer
2. 877 views
A spherical steel ball bearing has a diameter of 2.540 cm at 24°C.(a) What is the diameter when its temperature is raised to
1. 3 answers
2. 1,137 views
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic
1. 3 answers
2. 757 views
A 60.0 kg runner expends 355 W of power while running a marathon. Assuming that 8.00% of the energy is delivered to the muscle
1. 3 answers
2. 563 views
is the acceleration of a child sitting near the center of a merry go round larger than the acceleration of a child sitting near
1. 1 answer
2. 481 views
is the acceleration of a child sitting near the center of a merry go round larger than the acceleration of a child sitting near
1. 1 answer
2. 418 views
Would someone check my answers please, thanks for any help..1. By creating a committee on social welfare, the American
1. 4 answers
2. 725 views
I read over my answers and re-done them, could someone please check them again for me.. Thanks in advance1. By creating a
1. 7 answers
2. 760 views
A row of six 1 N wooden blocks is being pushed across a tabletop at a constant speed by a tow tractor that exerts a force of 1.3
1. 2 answers
2. 590 views
Could someone please check my answers. If they are wrong could you give me the correct answer or tell me where to find
1. 1 answer
2. 863 views
Could someone please check my answers. If they are incorrect could you please give me the correct answers or tell me where I
1. 5 answers
2. 665 views
Could someone please check over my answers, and let me know if any of them are wrong. If they are wrong could you please give me
1. 5 answers
2. 584 views
let a,m, and n be whole numbers where m>n and a is not zero. a^m/a^n= a^m-n
1. 1 answer
2. 211 views
Determine the mass of carbon monoxide that is produced when 45.6 g of methane, ch4 react with 73.2 g of oxygen gas, o2. The
1. 2 answers
2. 810 views
Determine how many atoms there are in 1 litre of hexane or gasoline. A litre of gasoline has a mass of approximately 850.0
1. 2 answers
2. 508 views
Determine how many atoms there are in 1 litre of hexane or gasoline. A litre of gasoline has a mass of approximately 850.0
1. 1 answer
2. 408 views
In an experiement 23.4 g of iron sulphide are added to excess oxygen and 16.5 grams of iron (III) oxide, Fe2O3 are produced the
1. 3 answers
2. 871 views
How do I prepare 500 ml of a .100 mol/L solution of copper sulphate.
1. 2 answers
2. 556 views
What is a meteor mad out of?
1. 1 answer
2. 366 views
I have posted this once and still cannot get the correct answer.Determine the mass of carbon monoxide that is produced when 45.6
1. 2 answers
2. 722 views
Please be specific. In an experiement 23.4 g of iron sulphide, FeS are added to excess oxygen, and 16.5 of Iron oxide, Fe2O3 are
1. 2 answers
2. 920 views
what two tests can I use to determine if a comound is an alcohol or a short or long chained carboxylic acid. I have two
1. 4 answers
2. 352 views
Using structural formula, draw formulae illustrating the complete combustion of ethanol
1. 4 answers
2. 543 views
write a complete strucural formula for each reaction, Name the reactio and then the reactants and productsC3H6 + Cl2 --- C3H6Cl2
1. 2 answers
2. 679 views
a contaminated water sample has a H of 3. How many times more acidic is this sample compared to neutral water of 7
1. 1 answer
2. 362 views
what chemical test can be used to test for lead in water
1. 1 answer
2. 356 views
2.00mL of 0.01 mol/L aqueous sodium sulphide is used to test a 50.omL sample of water containing 0.0005 mol/L mercury (II)
1. 4 answers
2. 512 views
A technician needs to determine the concentration of lead ions in a sample of watera) Suggest a test chemical that can be added
1. 3 answers
2. 488 views
A technician needs to determine the concentration of lead ions in a sample of watera) Suggest a test chemical that can be added
1. 1 answer
2. 515 views
a) show a balanced neutralization reaction for each.b) Determine how many moles of base are needed to neutralize 2 mles of acid
1. 1 answer
2. 485 views
2NaHCO3 --- Na2CO3 + H2O + CO22Fe + 6 HCl -- 2 FeCl3 + 3H2 2HBr + Ca(OH)2 -- CaBr2 + 2H2O N2 + 3H -- 2NH3 2H2O -- 2H2O + O is
1. 1 answer
2. 667 views
I am having problems with this redox question.3 Ag2S + 2Al ---6 Ag + Al2S3 What are the charges on each;
1. 1 answer
2. 621 views
I am having problems with this redox question.3 Ag2S + 2Al ---6 Ag + Al2S3 What are the charges on each;
1. 3 answers
2. 1,399 views

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