# 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

*March 2, 2017*

**Chemistry**

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

*October 21, 2015*

**Chemistry**

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

*October 21, 2015*

**Chemistry**

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

*October 21, 2015*

**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

*May 13, 2015*

**english**

last summer

*October 18, 2014*

**Algebra**

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

*May 30, 2014*

**Algebra**

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

*May 30, 2014*

**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.

*October 9, 2012*

**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.

*September 10, 2012*

**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?

*April 11, 2012*

**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?

*April 5, 2012*

**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?

*April 4, 2012*

**math**

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

*April 2, 2012*

**math**

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

*March 13, 2012*

**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

*March 1, 2012*

**math**

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

*February 29, 2012*

**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?

*February 22, 2012*

**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 ...

*February 16, 2012*

**math**

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

*February 7, 2012*

**math**

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

*February 2, 2012*

**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?

*January 18, 2012*

**math**

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

*January 17, 2012*

**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?

*December 20, 2011*

**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.

*December 14, 2011*

**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?

*January 19, 2011*

**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

*January 13, 2011*

**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

*January 13, 2011*

**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 ...

*July 12, 2010*

**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 ...

*July 12, 2010*

**science**

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

*August 10, 2009*

**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?

*August 2, 2009*

**science**

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

*May 27, 2009*

**science**

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

*April 16, 2009*

**bio**

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

*January 8, 2009*

**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

*January 8, 2009*

**bio**

haha got it

*January 8, 2009*

**math**

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

*January 1, 2009*

**math**

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

*December 7, 2008*

**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 ...

*November 7, 2008*

**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 ...

*November 7, 2008*

**Ethnic Diversity**

Thank you all your ur helpppp

*September 2, 2008*

**social science**

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

*March 27, 2008*

**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...

*May 23, 2007*

**can you tell me the answer to this riddle**

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

*December 24, 2006*

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