# Posts by amber

Total # Posts: 1,687

**Science**

Ok thanks

**Science**

1. How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an atom is the same as a real atom. C. A model of an atom is more complex than a real atom. D. A model of an atom is not as small as an actual atom. I ...

**ap chemistry**

A powder has a mass of 40.0g. When the powder is added to 30.0mL of water, the total volume is 45.0mL. What is the density of the powder

**Health**

Characteristics caused by hormones but that do not include development of reproductive organs are called........ A. primary sex Characteristics B. secondary sex characteristics C. physical Characteristics D. body Characteristics The many physical changes that occur during ...

**Social Studies**

Ok I would like to change my answer for number 3 and I think its C. Is that correct?

**Social Studies**

Ok give me a few minutes to figure it out and I'll tell what I think ok. Thanks for helping me :)

**Social Studies**

On number one I think B. On number two I think C. On number three I think A. Is my answers right?

**Social Studies**

1. What function do the barrier islands play environmentally for the state of Georgia? A. They create deep sea ports. B. They protect the coastline. C. They carry toxic chemicals from the mainland. D. They reduce the likelihood of drought. 2. Which of the following is NOT ...

**Science**

Can someone please help me on my science?? I'm kinda new here. Thanks :)

**Science**

In general, what would a scientist do after forming a testable question? A. Design an experiment B. Develop a hypothesis C. Draw a conclusion D. Analyze data (I think B. is that the right answer)

**Science**

Thanks :)

**Science**

Please anyone??

**Science**

A science teacher was curious to see whether offering money for good grades would increase student peformance on a test. The teacher offered half of the students in the class $5.00 if they got an A on their next test. The other half of the class was not offered any money. What...

**Math**

A piece of wire 12 m long is cut into 2 pieces. One piece is bent into the shape of an equilateral triangle and the other into a shape of a circle. How should the wire be cut so that the combined area of the two figures is as small as possible?

**math**

Thank you for your help

**math**

What line is perpendicular to the line y=2/3x+3?

**Algebra**

please help me and explain how you got the answer. Solve the equation. y + (–6) = –9 A. –15 B. –3 C. 54 D. 3

**Algebra**

thank you so much sheenybeany! You really helped me a lot!

**Algebra**

its y/6 then >10

**Algebra**

please help me with this question. please explain this question to me and how you got the answer to the question. Solve the inequality. > 10 A. y < –16 B. y > –60 C. y > 4 D. y < –60

**mat/117**

Simplify the expression 3√5/64

**mat/117**

Simplify the expression 5/8+√7

**mat/117**

√2(9-√2)+5√2

**Math**

What is the unit rate in miles per gallon if 140 miles are traveled on 14 gallons of gas? The unit rate is ____ mi/g.

**Math**

The length of a rectangle is 5ft longer than twice the width. If the perimeter is 106ft, find the length and the width of the rectangle.

**English**

Revise each of the following sentences twice, once as a periodic sentence and once as a cumulative sentence. 1.) Obviously not understanding reporters, the politician did not know their names, did not answer their questions, and did not read their stories. (periodic) Because ...

**Chemistry**

Consider a 9% by mass aqueous ethyl alcohol solution. a.) Calculate the molality of this solution_____m b.) Given that ethyl alcohol is a molecular solute, calculate the freezing point of this solution. ________ degrees Celsius. c.) Consider the boiling point of each solution...

**Chemistry**

If you have 0.150 M HCl solution available, calculate the volume of HCl(aq) necessary for this reaction. _______ml

**Chemistry**

calculate the volume of hydrogen produced from .025g of aluminum and sufficient HCl at 21 degrees Celsius and 755 torr according to the following reaction: Al(s) + HCl(aq)--------- AlCl3 (aq) + H2(g) Volume of H2________ml

**mat/117**

Simplify the expression completely (9-5 4√6)(7- 4√8).

**History**

Thanks that helped :)

**History**

I don't know if this one is right or not. I've been stuck on this question for 15 mins and my grade counts on this. 20. “In Flanders Fields” expresses the speaker’s belief that (Points : 5) war and its horrors are wrong and evil. the war is necessary and...

**Algebra**

A mother wants to invest 8,000 dollars into her child's college fund. She invests a portion of the money into a CD account which earns 4% interest, and the remainder into a savings bond which earns 7% interest. If the total interest earned after one year is $480.00, how ...

**science**

They aren't real, obviously. They're just trolls, or pedophiles. Seriously.

**trig**

Find all points of intersection of the polar curves r= 2 + 4cos theta and r= 6cos theta. Please explain in detail.

**science (weather & climaate**

It B because im in connection and it was right

**Finance**

THE CASH FLOW STATEMENT One of the quarterly financial information any in public traded company is required to disclose to the SEC and the public. The document provides collective data concerning all cash inflows a company receives from both its ongoing operations and outside ...

**Math**

Is: n^2-9n+9 a perfect square??

**Math**

Thank you!

**Math**

Simplify. 12n^2m^4 ________ 28n^4m^3 thank you!

**math**

A movie theater ticket booth opens at 10 am. There are four tellers who divide the customers evenly. The tellers have served 16 customers so far this morning. which expression represents the unknown number of customers each teller will serve? Let c represent the additional ...

**English**

Choose the correct usage to complete the sentience: the students couldn't help it that teachers forgot the deadline she had originally set

**Chemistry**

Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than for cocaine? Explain...

**CHEMISTRY**

Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than for cocaine? Explain...

**college algebra**

whats the question?

**Math**

my keyboard is not that advanced :(

**Math**

Simplify! 3x^5 over 15x A. x^4 over 5 B. 1/5 C. x^6 over 5 D. x^5 over 5 thank you!

**Math**

simplify! r^2s^5t^4 over (like a fraction) r^2s^2t^5 A. S^3 over t^2 B. S^3 over t C. S^2 over t^3 D. S over t ** a letter with -- ^ means to that power** thank you!

**BIOLOGY**

how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve

**Biology**

how would i find the osmotic pressure of something from "0.9% NaCl solution and MW is 58 grams" .. ? is there a formula or some sort i am missing? if so can you tell me what that is cause i have several problems like these that i don't know how to solve

**MATH**

Which expression is a polynomial???? A: 11 0ver the square root of x B: square root of 11 times x C: x - square root 11 D: 11 over the square root of x to the 2nd power (sorry I am not sure how to insert square root symbols or fractions, so u have to imaging its there) thank ...

**CHEM ABSTRACT**

ok thank you!

**CHEM ABSTRACT**

thank you! quick question, the link you provided mentioned to keep the methods section of the abstrast to about 2 sentences, but i had to do 6 experiments for it, do i have to fit all 6 different methods in the two sentences or would it be more like one sentence for each of ...

**CHEM ABSTRACT**

I need to write an abstract for my chemistry lab for identifying an unknown acid, is there a generic list of what to do for an abstract? because mine are always to long

**college physics**

mass of ball x velocity/ mass of ball +mass of performer

**college physics**

1.07

**Chemistry**

This compound is mescaline, a hallucinogen. Which of the following statements is true? Mescaline is an amine. Mescaline contains an alcohol group. Mescaline is a carboxylic acid. Mescaline is an amine and contains an alcohol group.

**chemistry**

Sometimes the basicity of a solution is reported using pOH (pOH = -log[OH-]). What is the a. [OH-] if pOH = 1.90 b. [H3O+] if pOH = 12.94 c. pH if pOH = 9.70

**chemistry**

It requires 23.2 mL of 0.250 M KOH to titrate 49.0 mL of an HCl solution of unknown concentration. Calculate the initial HCl concentration.

**Chemistry**

It is commonly known that freshly cut fruits turn a brownish color when exposed to the air for a number of minutes. This is due to the action of the enzyme polyphenoloxidase. It is also well known that the formation of the brown color can be prevented or slowed by chilling the...

**Chem**

a)Pv=nRT 1mol(.0821)(288.15)/1atm=23.7L 1mol(.0821)(303.15).1atm=24.9L b)E=3/2nRT 1mol(8.314R)(303.15-288.15)=187J

**Chem**

A balloonist is preparing to make a trip in a helium-filled balloon. The trip begins in early morning at a temperature of 15 degrees C. By midafternoon, the temperature has increased to 30. degrees C. Assuming the pressure remains constant at 1.00atm, for each mole of helium, ...

**Chemistry**

Express the concentration of a commercial hydrogen peroxide solution, which is 3.0 (w/w), as a molarity. Show all work

**math**

If X varies inversely with Y and X=8 when Y= 10, find Y when X=6 Answer choices are A: y= 3/20 B: y= 4.8 C: y= 7.5 D: y= 40/3

**Math**

How do you find the coordinates to graph y=x2+2x-3

**social studies**

we are working on ancient egypt and i cant find the answer to In what ways were the reigns of Akhenaton and Ramses II different

**algebra**

A math tutoring service opened for their first year open, it had 5 students. If 3 new students enroll each year, which of the following equations represents how many students will be enrolled in x years? answer choices: A: y = 5x - 3 B: y = 5x + 3 C: y = 3x + 5 D: y = 3x - 5

**accounting**

Uncollectible Accounts—Percentage of Sales Ryan's Express has total credit sales for the year of $178,000 and estimates that 3% of its credit sales will be uncollectible. Record the end-of-period adjusting entry on December 31, in general journal form, for the ...

**math(algebra)**

A small college opened in 1999. In the linear model below, x represents the number of years after 1999, and y represents the student population. Interpret the slope. y = 576 + 173x Answer choices are::: A: An additional year of the college being open is associated with an ...

**MATH**

SIMPLIFY. 4 TO THE 4TH POWER TIMES 4 TO THE 2ND POWER.

**accounting**

A light truck is purchased on January 1 at a cost of $27,000. It is expected to serve for eight years and have a salvage value of $3,000. Calculate the depreciation expense for the first and third years of the truck's life using the following methods. If required, round ...

**accounting**

Based on the financial statements for Jackson Enterprises (income statement, statement of owner's equity, and balance sheet) shown below, prepare the following financial ratios. All sales are credit sales. The Accounts Receivable balance on January 1, 20--, was $21,600. ...

**SCIENCE**

Wow. Helpful.

**Physics.**

From greatest to least, rank the accelerations of the boxes. C. <-5N--|3kg|--16N-> B. <-8N--|4kg|--16N-> A. <-4N--|5kg|--8N--> D. <-2N--|20kg|--20->

**West Chester University**

Physics.

**West Chester University**

From greatest to least, rank the accelerations of the boxes. C. <-5N--|3kg|--16N-> B. <-8N--|4kg|--16N-> A. <-4N--|5kg|--8N--> D. <-2N--|20kg|--20->

**history**

My next guess is A. Would that be correct?

**world history**

Which technologies have been pivotal in the development of the Information Age? To what extent did the industrial revolution create the foundation for modern technologies?

**Math**

Kayla had 441 stamps.She lost 3/7 of them. How many stamps did she have left?

**Calculus 3**

Find the center of the ellipsoid x^2+4y+2z^2+2x-4y+z = 20 I'm having trouble factoring to get the center points. Can someone please help. This is where I'm stuck. (x^2+2x+1)+4(y^2-y+1/4)+2(x^2+1/2z+1/16)=20+1+1+1/8 (x+1)^2+ Now I don't know how to get the y and z ...

**Chemistry**

what if you were mixing two different solutions? such as .9% of the NaCl solution and a 5% dextrose solution? would you just find the moles of both like the above and add them together? then divide all of it by the L?

**Chemistry**

I'm doing something wrong with osmolarity. I have 100 ml of .9% NaCl. So what i did was take the MW (58.44) and divided it by the .9 because it should be grams, then divided that number by .1 (for the liters) but its coming out with a huge number and its not supposed to. I...

**Chemistry**

Aspirin, C9H8O4 , is produced through the following reaction of salicylic acid, C7H6O3, and acetic anhydride, C4H6O3: C7H6O3(s) + C4H6O3(l) ---> C9H8O4(s) + HC2H3O2(l) A. What mass of aspirin (kg) could be produced from 75.0 mol of salicylic acid? B. What mass of acetic ...

**math**

Taylor is correct and I'm in 8th grade!! THANKS!

**Chemistry**

If you total sample mass was 1.50 g, and you determined that 0.95 g were KHCO3, what was the percent mass off the KHCO3 in the sample?

**history help plzzzzzz**

Dude. You should not be asking for answers period. She's probably fed up with kiids like you, asking for help instead of doing it your self, do the assignment on your own.

**music**

I'm scared she might get mad so I need someones opinion should i pick him or another rock star?

**music**

Ok thanks but someone told me he worshipped satan so do u think my teacher would get mad?

**music**

In class I have to write a report on a music star so I chose marylin manson can someone tell me about him?

**Science**

Which of the following is disadvantage of internal fertilization? A. Gametes are released into the surroundings. B. Gametes may get washed away. C. The developing zygote is protected. D. Larger numbers of eggs can be fertilized at one time

**Science**

Ok i hope I'm not being rude by saying this but why do u think that because I think the answer is C so I wanna compare our reasons XD

**Science**

Which of the following is disadvantage of internal fertilization? A. Gametes are released into the surroundings. B. Gametes may get washed away. C. The developing zygote is protected. D. Larger numbers of eggs can be fertilized at one time.

**Science**

Ok I have one more question and it is the same as this one but instead of external its internal? And the answers are the same as well like the question.

**Science**

I think B.

**Science**

Which of the following is disadvantage of external fertilization? A. Gametes are released into the surroundings. B. Gametes may get washed away. C. The developing zygote is protected. D. Larger numbers of eggs can be fertilized at one time.

**Science**

Thanks I have another questions to :)

**Science**

A male peacock displays his colorful tail in order to...... A. increase the success rate of asexual reproduction B. increase the gestation period. C. release gametes into his surroundings D. attract a mate

**Science**

A male peacock displays his colorful tail in order to...... A. increase the success rate of asexual reproduction B. increase the gestation period. C. release gametes into his surroundings D. attract a mate

**Science**

I have another questions in science if someone is willing to help me