# Posts by bebe

Total # Posts: 46

chemistry help ?!
Which of the following is an exothermic reaction? sugar dissolving in water <<my choice an explosion tea dissolving in water the cooling of an ice pack

Chemistry
Explain the role ch3co2na in the preparation of fe(c5h7o2)3

Chemistry
Explain the role of CH3CO2Na n the preparation of Fe(C5H7O2)3)3

Chemistry
Explain why you are instructed to wash the collected crystals with distilled water instead of a water-methanol mixture.

math
Julius has a garden that has dimensions of 12 ft by 20 ft. Julius needs more room to plant some peppers, and determines the garden will need a new area of 360 square feet. How much should he increase the length and width by, if

english
last summer

Algebra
(-9)-((3)-(-9)-7

Algebra
(-5)x(-8)-6x6

chemistry
How much energy is required to raise the temperature of 3 kg of lead from 15C to 20C? Use the table below and this equation: Q = mcT.

math
A model of a boat is 1 3/8 feet long. How long is the model of ship that is that is three times as long, if the models are made to the same scale? Make a drawing to help you solve the problem, and then calculate the answer.

math
Wendy found a rule for a table. The rule she made is y = x + 2.She says that means every y-value will be even.Is she correct?

math
Sal made a map of his neighborhood.According to his map,Sal's house is 6 units away from the grocery store. The grocery store is 5 units away from the coffee shop.The coffee shop is 1 unit from Sal's house.How is this possible?

math
on a map, John is standing at (11,11). His friend Lucy is standing at (1,11).John took 10 steps to the right. Is he standing with Lucy now?

math
Doug is standing at (2,1).Susan is standing (1,2).Who is farther to the right? How do you know?

math
describe the interval you would use for a bar graph if the data ranges from 12 to 39 units

math
william wants to known how many kilograms a 1000 gram cantaloupe weighs he converts the measurement and says the melon 1,000,000 kilograms what did he do wrong

math
Mary said that the best unit of measure to weigh her cat was ounces.Is she correct? Explain.

math
Nathan owes Michael \$5.00.Nate expressed how much he owes as an integer.Michael expressed how much Nate owes him as an integer.What do the two integers have in common?

math
Alexandra has 18 yo-yos.She spent \$9.00 to buy them all.She wrote the equation 18 divided by 9 = y to find how many yo-yos she got for each dollar she spent.Sven has 9 yo-yos.He spent \$18.00 to buy them all.He wrote the equation 18 divided by 9 = y.What does Sven's ...

math
explain how you can use a grid to subtract 1.65 - 0.98

math
draw a number line and label at least 5 points as fractions and decimals.explain your answer

math
glenda wrote 1/7 of her paper on Monday,1/14 of her paper on tuesday,and 2/28 of her paper on wednesday.she said she wrote more than half of her paper,is she correct?why or why not?

math
in what way is subtracting fractions with unlike denominators like adding fractions with unlike denominators?

math
In missy's sports-cards collection, 5/7 of the cards are baseball. In frank's collection, 12/36 are baseball.Frank says they have the same fraction of baseball cards.Is he correct?

math
explain why 1/2 of 12 horizontal squares of Region A is not larger tha n 1/2 of 12 vertical squares Region B.

Chemistry
Fluorine-18, which has 1/2 life of 110 minutes, is used in PET scans. If 100 mg of fluorine-18 is shipped @8AM, how many milligrams of the radioisotope are still active if the sample arrives at the lab at 1:30 pm?

physics
a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball

physics
a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball

math
Week 4: Exercises from E-Text 12. Individual Assignment: Exercises From the E-Text Due 7/12/10 • Resource: Applied Statistics in Business and Economics • Prepare answers to the following exercises from the Applied Statistics in Business and Economics e-text: o ...

math
A plumbing supplier’s mean monthly demand for vinyl washers is 24,212 with a standard deviation of 6,053. The mean monthly demand for steam boilers is 6.8 with a standard deviation of 1.7. Compare the dispersion of these distributions. Which demand pattern has more ...

science
No

science
What are the challenges of managing your chosen terrestrial resource issue? What human activities contribute to the problem?

need help
The nature of carbon dioxide in the atmosphere is different,though. Global warming is a Global problem and is not specific to one area. Does thgis make carbon offsets a better idea than mitigation?

science
heyyy. i need the answer for ths question tooo...

science
determine wheter each of the following reactions occur. 2Ni(s) + MgSO4(aq)---> if it doesnt occur explain why

bio
there it is in case anyone else needs it.. =]]

bio
Because the ions are charged, indicating high polarity, which lipids do not possess; they're hydrophobic, and therefore ions cannot pass through the lipid bilayer since lipids are highly unpolar, unless through an ion channel, which has a higher polarity

bio
haha got it

math
solve the equation (x-5)^2=10

math
what happens when the king of beasts runs in front of a train?

genetics/biology
Bacteria Y has a mutation within it’s genome, at gene R, that provides resistance to neomycin. Bacteria Z is sensitive to neomycin, however, when Bacteria Y is placed in a mixture with Bacteria Z, Bacteria Z also gains neomycin resistance. One cell of Bacterium Y ...

genetics/biology
Bacteria Y has a mutation within it’s genome, at gene R, that provides resistance to neomycin. Bacteria Z is sensitive to neomycin, however, when Bacteria Y is placed in a mixture with Bacteria Z, Bacteria Z also gains neomycin resistance. One cell of Bacterium Y ...

Ethnic Diversity
Thank you all your ur helpppp

social science
How does the government intervene to control environmental pollution? externalities or rivalry consumption

physics
A light, rigid rod 1.039m in length joins two particles with masses 3.65kg and 4.94kg at its ends. The combination rotates in the xy plane about a pivot through the centre of the rod. Determine the angular momentum of the system about the origin when the speed of each particle...

can you tell me the answer to this riddle
what happens when the king of beasts runs in front of a train?

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