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Posts by Jack

Total # Posts: 1,773

Chemistry
Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas. Is Al2(CO3)3 ==> Al2O3 + CO2 the right equation? If so, how do you balance this equation?

Chemistry
Balance the following equations. A) SO2 + O2 --> SO3 B)Fe2O3 + H2 --> Fe +H2O C)P + O2 -->P4O10 D)Al + N2 --> AlN

Chemistry
Write and balance equations for the following reactions. A)Iron metal and Chlorine gas react to form solid iron(III) chloride. B)Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas. C)Solid magnesium reacts with aqueous silver nitrate to ...

chemistry
Write Skeleton equations for these reactions. A) Heating Copper(II) sulfide in the Presence of diatomic oxygen produces pure copper and sulfur dioxide gas. B)When heated, baking soda (Sodium hydrogen carbonate) decomposes to form the products sodium carbonate, carbon dioxide, ...

bcc
if you put honey,water,dishwashing liquid and vegetable oil in a clear jar and then you add asmall of plastic cup, plastic fork, straw and a small piece of styrofoam cup.

bcc
how do you work equation dealing friction and newtons when pulling the distance of a block

Music
tell me about the rocks band

Chemistry
which has the highest lattice energy BaO or SrO

chemistry
Compound A contains 1.75g nitrogen and 3.99g oxygen. Compound B contains 19.6g nitrogen and 56.0g oxygen. Are compounds A and B the same? Explain.

chemistry
Find the molar mass of Chromium (III) Hydrogen Phosphate. Also, what is the chemical formula for this molecule?

chemistry
The mass of twenty-three dozen pencils is 1.496 kg. What is the mass of 1 pencil?

chemistry
How many neon atoms are there in five moles?

chemistry
How many carbon atoms are there in 150.0 g Glucose? (Glucose is C6H12O6, molar mass = 180.16 g/mol)

chemistry
Convert 12 fluid ounces liters. (1 fl. oz = 29.57 cm^3)

chemistry
Which of the following are empirical formulas? A) Ribose (C5H10O5) B) Ethyl Butyrate (C6H12O2) C) Chlorophyll (C55H72MgN4O5) D) DEET (C12H17ON) (numbers are subscripts)

ecology
examples of how humans have increased their food supply and what effects these methods have on the environment overall.

chemistry
How many grams of oxygen are there in 100.0 grams of water? What percentage of the mass of water is oxygen?

chemistry
Find the number of K atoms, C atoms, and O atoms in 95.5g of K2Cr2O7. (Potassium 2, Chromium 2, Oxygen 7).

English
they seem good to me

chemistry
consider the reaction in which 410 grams of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction. 1-how many grams of lithium are required? 2- how many grams of each product can be produced?

math
i have 78% in the course the exam is worth 30% and i got 65% what is my overall mark in the course

math
i have 78% in the course the exam is worth 30% and i got 65% what is my overall mark in the course

math
a trianglar course for a sailing race is marked off by buoys. The first lef is 250 meters longer than the second and the third leg is 100 meters shorter then the first. if the length of the course is 2500 meters, find the length of each length

math
the first side of a triangle is 8 meters longer than the second side. the third side is 3 times the second side. the perimeter is 128 meters. find the lengths of the three sides.

chemistry
The vapor pressure of dichloromethane, CH_2Cl_2, at 0 degrees celcius is 134 mmHg. The normal boiling point of dichloromethane is 40 degrees celcius. Calculate its molar heat of vaporization (in kJ/mol).

History
sue's answer doesnt help at all. thanks alot i failed

History
All of the following account for nativist sentiment against the New immigrants of the late 19th century EXCEPT that the immigrants a. practiced different religions b. had different languages and cultures c. were willing to work for lower wages than were native born workers d. ...

science
I added 40 mL of NaOH 1N to rise the pH of 10g teriphitalic acid from 5.3 to 6.3, so if I adde the same 40 mL of NaOH to 12g of the same acid what is the new pH will I have?

science
why does magnesium dissolve quicker in strong acid

Physics
Oop's, my bust. It's 60 Joules. I believe the 50m was thrown is a curve to throw me off, as as the '60J' = W. Otherwise it would have been say '60N over 50m = 3000J'. Thanks guys.

Physics
A car with a mass of 100 kg, with initial v = 1 m/s, has 60 Joules of energy added for 50 m. What is the final velocty? I'm using KE = 1/2 mv^2 to find initial KE. Then add 600 J to this for the final KE. Thus, W = KFf - KEi; KEf = W + KEi and KEf = 1/2mv^2 v^2 = (2(KEf))/m

9th grade
an egyptian form of writing

Math
How do you divide whole numbers?

Math
how do i compute a problem like 4/7 * 2/3 * 6

Algebra
15=2(9+4)+3

math
DQ sells 6 times as many orders of french fries as sonic everyday. If both sold 60 more orders DQ would only sell 3 times as many fries. How many do each sell before and after the incease?

Pre-Cal
Find the exact value of sec 60°tan135°-cot60°sin60°

math
The sweater shop projected income this year will be 69,000. That amount represents 40% of the shops annual sales. What is the shops projected sales

math
If I gross 2645.00 and taxed 31% how much do I bring home?

math
a wagon retails for 49.97 the store receives a built in 40% profit margin what is the cost

math
I can buy office supplies @ walmart with a 30/10 chain discount. If I paid $47.25 for adding machine. What was the regular price of my purchase? 30/10 chain discount means .70 x .90

math
I can buy office supplies @ walmart with a 30/10 chain discount. If I paid $47.25 for adding machine. What was the regular price of my purchase?

solve for unknown
thank you

solve for unknown
If jack does home improvment and price the material ,add 1 and 1/2 times that amount for labor and then quotes the job. If he gets the job for 17,000 how much is the material? and labor ?

math
wagons retail for $49.97. stores receive the wagons with a 40% profit margin. what is the cost?

French
What does conduissez mean in french?

math
Mr. Havel bought a car for $2400 and sold it for $2700. what was the percent of profit for Mr. Havel in selling the car?

health
for the health i get very good but my head alwas hrt so how do i do i don't know tell me why

physics
31^2+67^2=5186 sqrt(5186)=72.01388 ANSWER =72.01388

science
How does the portuguese man of war contribute to science?

religious education
please could someone help me answer this question - can science prove that God does exist? thankyou

Math
Thanks!

Math
I need help with an inverse function. If f(x)=3-x, I find the inverse function to be: x=3-y which is the same as y=3-x, same as the original. How can this be?

physics
A worker exerts a 140 N horizontal force on a 41 kg crate. The crate's acceleration across a level floor is 0.90 m/s2. Find the frictional force that the floor exerts on the crate.

physics
Suppose David Ortiz hits a home run which travels 361. feet (110. m). Assuming it left the bat at 50.°, how fast was it hit?

psychology
1)When conditioning takes place, behavior is associated with? a. ideas b. stimuli, consequences, or both c. events in the environment d. both b and c are answers. my first answer was b but this was wrong. Is the correct answer d? 2) In classical conditioning, the main ...

Psychology
1) The type of learning that involves reasoning, problem solving, language, memory, association of ideas, and other mental processes is Cognitive learning. Is this correct? 2) When you are figuring out how to memorize information for your college tests, you are engaging in ...

physics
answer.a car of mass 2000kg,increases its velocity from 10to 40 m\sec in time interval of 2 sec. calclate the force?

science
what are the chemical properties of scandium

writing
I'm writing an essay about a book I read, and I need to make a personal connection with a character that is conceited, brave, and strong. Could someone give some examples of personal connections?

cathedral
How do you figure out the space and volume ratio cube

Physics
if an obejct has an horizontal acceleration of -0.51 m/s squared and vertical acceleration of -7.683 m/s squared, what is the resultant acceleration?

Accounting
Do you help with accounting homework?

Physics
An object traveling at 5.0 m/s East has a mass of 6.0 kg. What is the magnitude of the object's momentum? I am not sure what the formula is for this one!

science
Do you think it would have been possible to know that living things are made up of cells without microscopes? Explain your thinking.

Gen 105
How can you use study techniques recommended for your personality type and strongest intelligence(s)to function best in distance learning enviroment

Economics
Is the Board of Governors influenced by Political Consideration?

Math
(4 x 1/2 + .87 + 17/16 + 22a -7.64 x 0.19 x 0 -1.87 + 3.1416) / 13

math
(6/7 x 4p + 3/4 - 8/19) (5p - 9x .88 x 0 /4) x 10%

math
(4 x 1/2 + .87 + 17/16 = 22a -7.64 x 0.19 x 0 -1.87 + 3.1416) / 13

Algebra
how to rewrite the expression using the inverse operation?

english
what are a list of Adverbs

algebra
Moon - 240000 mi Jupiter - 391000000. The space vehicle would take how many days to reach Jupiter? Saturday,

Math
Select the set of equations that represents the following situation: The sum of two numbers is 38, and their difference is twenty-six more than the smaller number. What are the two numbers?

algebra
How do you set this up as an equation? There is a total of 1600 cups and bowls. cups cost 1.90 and bowls cost 2.85. how many of each do you have if the bill was 3430.00. and that includes 105.00 saucer.

Math
I have $100.00 dollars to spend to buy 100 animals. Cows cost $50.00 each, sheep cost $3.00 each, pigs cost $2.00 each and chicks cost $0.10 each. How many of each do I need to buy to spend $100.00 dollars and have 100 aninals?

statistics
you are constructing a 95% confidence interval using the information: n = 50, xbar = 54.3, s = 2.1 and E = 0.65. What is the value of the middle of the interval?

Environmental Science
Stop looking to outside sources to do your school work you retard...figure it out for yourself

penn foster
explain how evalution and management e/m codes are grouped

Literature
The book Dracula can be substituted for which book read by the creature in the novel Frankenstein? Paradise Lost Ruins of Empires Plutarch's Lives Sorrows of Werter I think maybe Ruins of Empires but I am really not sure. The assignment is to substitute the reading ...

Marine science
Why is it beneficial that many predatory fish have larval and juvenile stages that feed at a low trophic level, while the adults feed at a tertiary or quaternary trophic level? My answer was that the larval and juvenile stages would get more energy but my teacher said that ...

Literature
I also need to find four different works that could be used to substitute the four that the creature read in the novel Franenstein which would change the creature. Does anybody know any websites that I could use to help me because I have no idea books to pick?

Literature
I need to know the four works that the creature in the novel Frankenstein read! Paradise Lost, Plutarch's Lives and Sorrows of Werter. I cannot remember what the last one is!!

Marine science
How has the Galapagos Tortoise changed or adapted over time?

marine science
How long has the Galapagos Tortoise been in existence?

Math
use the given zero to find all the zeros of the function. f(x) = x^3 + x^2 + 9x + 9 r = 3i I do not understand this!!

Math
Solve: (3-2) - (2-3)

Math
Find all the zeros of the function and write the polynomial as a product of linear factors. g(x)=x^5 - 8x^4 + 28x^3 - 56x^2 + 64x - 32 The zero I found so far is 2. I am confused on how to find the rest.

Math
Find a polynomial function with integer coefficients that has the given zeros. 0,0,4,1+i Please explain!! I am very confused.

english
A B C D

english
I just need help on this passage... To be a King, and wear a Crown, is a thing more glorious to them that see it, than it is pleasant to them that bear it: for my self, I never was so much enticed with the glorious name of a King, or the royal authority of a Queen, as ...

math
Find all the zeros of the function. f(x) = x^3 + 11x^2 + 39x + 29 I found one of the zeros = -1 but I am confused on how to find the other two.

math
Find all the zeros of the function. t^3 - 3t^2 - 15t + 125 Please explain. I am very confused on how to do this!!

Physics
I had to graph the following data and find the slope: Normal Force: Frictional Force: 0 0 2.0 0.6 6.0 1.8 9.0 2.7 10.0 3.0 The slope was 0.30. The question that I am confused on is what does this graph's slope represent?

math
Perform the operation and write the result in standard form. 1 + i over i - 3 over 4 - i Do I have to multiply top and bottom by i?

math
Perform the operation and write the result in standard form. 8 + 20i over 2i Please explain, I am very confused!!

Science
Crustaceans grow by doing what?

English
"Disguise" is stressed on the second syllable, not the first. (Don't know if this helps.)

physics
(Let me try to post that better, this site blocks URLs. "tinyurl" "." "com" "/oexysh")

physics
tinyurl (com) /oexysh (Do the same for the other terms.)

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