# Posts by CASSANDRA

Total # Posts: 280

**Chemistry**

How many moles of H2O are in 3.00L of water? (d=1.00g/mL)

**History**

Political factionalism in the U.S. during the 19th century was fueled by the emergence of a unique American culture and the transition from an agrarian to market economy. Please give me some information on writing about this.

**social studies**

Political factionalism in the U.S. during the 19th century was fueled by the emergence of a unique American culture and the transition from an agrarian to market economy. How do I start writing about this subject?

**Science**

0.04 m/s

**Algebra 1**

can you please explain to me how you got the answer because i have no idea how to do this..

**Algebra 1**

Factoring Polynomials: 2x to the second power -3x-2 could you please explain to me how to do this.

**Algebra**

Ground beef sells for $4.75 per kg and ground pork sells for $5.50 per kg. How many kg of ground pork should be mixed with 8 kg of ground beef to make a mixture that sells for $5.10 per kg? I don't know how to set this up or anything. Please help!

**Algebra**

The second one: 2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73=712 Matt The fourth one: 2-9=8 digits 10-99=178 digits 100-200=300 digits 201-300=297 digits 301=3 digits 302=3 digits 303=3 digits 304= 3 digits 8+178+300+297+12= 795 304 pages

**physics**

convert an acceleration of 4.1 mi/h/s to m/s^2

**physics**

a 21.2 kg mass attached to a spring scale rests on a smooth, horizontal surface. the spring scale, attached to the front end of a boxcar, reads T=35.6N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the acceleration of the car, ...

**physics**

If a seagull flies to a height of 22.5 meters, how long will the clam take to fall? The acceleration of gravity is 9.8m/s. answer in units of sec

**math**

(exponents and roots) Michael wants to fence in a new garden so that the garden has an area of 625 square feet. If his garden is in the shape of a square, what is the length of each side?

**Social Studies**

To survive in different areas, native people had to learn to?

**Health**

C. Environment and genetic factors

**algebra1**

A rule of thumb states that the ideal weight (in ounces) of a baseball bat for a high school player is 5 ounces more than one third of the player's height (in inches). Write an expression that describes the ideal weight in ounces of a bat for a high school player who is h ...

**Math**

The Pew Research Center recently polled n= 1048 U.S drivers andfound that 69% enjoyed driving their automobiles. (a) Construct a 95% confidence interval for the proportion of U.S.drivers who enjoy driving their automobiles. (b) In 1991, Gallup Poll reported this percent to be ...

**physics**

State how the centripetal force is provided in the case of a satelite orbiting the earth

**Chemsitry**

Starting out with 50 mL of 0.20 M NaHCO3, calculate how many mL of 0.50 M NaOH solution to add to make 100 mL of approximately 0.10 M (total) buffer solution with a pH of 10.35. By adding NaOH, some of the NaHCO3 gets converted to the conjugate Na2CO3. This conjugate acid/base...

**Chemsitry**

A chemist needs to make 50 mL buffer solution with a pH value of 7.25 using the acid/conjugate base pair of KH2PO4 and Na2HPO4 (which has an effective pKa = 6.86). The buffer solution needs to be made so that the total concentration of buffer is 0.10 M (that is, [acid] + [base...

**Chemsitry**

Tris is an abbreviation for tris (hydroxymethyl) aminomethane, which is a weak base. Calculate how many grams of tris (mw=121.14g/mol) are needed to make 25mL of 0.10M tris solution. Calculate how many mL of 0.25M HCl are needed to convert half of the moles of tris present in ...

**pre-algebra**

oh you don't have to worry about it.

**pre-algebra**

thomas borrowed $4800 to buy a new car. he will be paying $96 each month for the next 60 months. find the simple interest rate for his car loan.

**Pre-algebra**

thank you!

**Pre-algebra**

i got 216 would that be right?

**Pre-algebra**

$1200 at 6% for 36 months

**Chemistry**

A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the endpoint. 1. How ...

**Chemistry**

in step 2 aren't you supposed to divide by the molar mass of vitamin C (176.12)?

**Chemistry**

would 5.61x10^-5 make sense for the molarity for the original unknown sample of vit C solution prior to dilution?

**Chemistry**

Nevermind. i figure it out. Thank you so much for your help!

**Chemistry**

to find the molarity of the original vit C do you just divide the moles found in 1 divided by 0.001 L or 1.0 mL?

**Chemistry**

to find the total moles of iodine, do you just multiple 8.5x10^-4 by .00660 L?

**Chemistry**

we are not given the molar mass of the vit. C. how are we supposed to find the milligrams of vit C are in the orginal sample?

**Chemistry**

A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the endpoint. 1. How ...

**physics**

The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.60 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point located 2.34 m from ...

**Chemistry**

Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL. Chemical reaction: Blue dye + ClO^- -->...

**Chemistry**

Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Chemical reaction: Blue dye + ClO^- -->oxidized dye +Cl^- Reaction #1: 5.0 mL or diluted bleach solution, 15.0mL of distilled water, 10.0 mL of diluted blue dye Reaction #2: 10.0mL of diluted...

**Chemistry**

Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL.

**Chemistry**

Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL.

**physics**

An object is thrown upwards and after 2 seconds is 78 m above where it was initially thrown. Assume no air resistance, and determine the initial speed the object was thrown at.

**math**

7k-8k=1 how would you do this?

**math**

thank you

**math**

3(x+ -5)+7(x+2)

**math**

after i looked at it a couple times i figured it out how you did it thank you(:

**math**

can you please explain this..

**math**

4+9c+3(c+2)

**media**

Huge corporations own every television network and most other media outlets. How does this affect their news coverage? How much influence do you think these corporations have on the public? Do you think the public is aware of the comments made by you and your classmates? (...

**discussion**

What is the difference between current sources and relevant sources? Is it possible a source might fit one category, but not the other? How?

**COM 156**

What websites do you normally frequent? Are these websites credible? When is credibility more important and when is it less important? Support your answers with specific examples

**science**

How is the temperature of a substance related to the energy of movement of the particles in the substance?

**social studies**

Thank you so much

**social studies**

C) cities...This was my second choice. Am I right?

**social studies**

In Korea, Modern ways are much more visible in? a)villages b)communes c)cities d)farming communities I picked B Communes but not sure

**Science**

what is the net ionic equation for: Mn+Ni(NO3)2 -> Mn(NO3)2+Ni Is the answer no reaction or is Nickel considered a state change??

**PHYSICS**

Given: The initial position of the block is the origin; i.e., x = 0 at t = 0 . Consider down the track to be the positive x-direction. A block with an initial velocity v0 slides up and back down a frictionless incline. Which graph best represents a description of the velocity ...

**math**

so would it be 12x15? 12x20 ? etc...

**math**

TILING A decroative floor pattern has one red square tile surrounded by 12 blue tiles. Write and evaluate an expression to show how many total tiles (red and blue) are needed if there are 15 red tiles. Then make a table showing the total number of tiles if there are 15,20,25, ...

**math**

6+4(3)

**math**

Thank You so much!

**math**

2[(10-3) + 6(5)] = what? I can up with 74

**Statistics**

Each year, approximately 160 colleges compete in the National Concrete Canoe Competition. Each team must design a seaworthy canoe froma a substance not known for its capacity to float. The canoes must weigh between 100 and 350 pounds. Find the midrange.

**geometry**

Find the area of the parallelogram that has coordinates of A(-2,2), B(-4,-2), C(2,-2), and D(4,2). Find the base and height first.

**english**

i not sure micheal jordan and john miltion for the second one

**english**

4.Type the appositive(s) in each sentence. You do not need to include the commas. The famous basketball player Michael Jordan was known for his performance under pressure. 5. Type the appositive(s) in each sentence. You do not need to include the commas. A brilliant poet, John...

**^^Brand Extension^^**

okay. but i don't want that example from wikipedia. I want something else. is there another food item example you give to me plese?

**^^Brand Extension^^**

wat does brand extension mean? cud u give me an example? Brand extension or brand stretching is a marketing strategy in which a firm marketing a product with a well-developed image uses the same brand name in a different product category. The new product is called a spin-off. ...

**^^Brand Extension^^**

wat????? me no understand^^

**^^Brand Extension^^**

wat does brand extension mean? cud u give me an example?

**geometry**

it is recommended that for a height of 20 inches,a wheelchair ramp be 19 feet long.what is the value of x to the nearest tenth>

**math**

7 - (-15) equals?

**math**

7 minus -15 equals? would that be a -8?

**math**

thank you

**math**

-1 minus 8 equals? is 7 the correct answer

**math**

thank you so much

**math**

The temperature at 1:00 p.m. was 88 degrees farenheight. This was 12degrees warmer then at 8:00 a.m. Earlier on the same day, the temperature fell 7 degrees farenheight from midnight to 4:00 a.m. Then it rose 6 degrees farenheight from 4:00 a.m. to 8:00 a.m. What was the ...

**math**

thank you

**math**

does a -8 plus -7 equal 15 then?

**math**

Thank you...after awhile of doing these I start to get confused so I wrote it down now. Thanks again.

**math**

ok..and a negative times a positive is a negative and the same for dividing a negative by a positive it is always negative?

**math**

can you just clear this up for me... a negative times a negative is a positive? a negative divided by a negative is a positive also?

**math**

thank you

**math**

so what if you have a -18 divided by -3 is the answer then 6?

**math**

thank you

**math**

when adding a negative with a positive the answer isn't always negative?

**math**

14 positive

**math**

-1 plus 15 equals what?

**math**

thank you

**math**

when adding and subtracting integers does 2 negatives equal a positive? And does 1 positive plus 1 negative number equal a negative?

**math**

what is 20 plus a -3?

**math**

thank you

**math**

what is 5 divided by -4?

**math**

thank you

**math**

63 divided by -7 is what?

**math**

-8 x 7 = ?

**spelling**

thanks so much

**spelling**

What is akways before you but you never can see it? using the letters: f,e,u,r,u,t...

**chemistry**

.Cholesterol C27H46O 2. During transport, cholesterol exist often exist as lipoprotein form. which mean a large molecule contain both cholesterol and protein. The good form high density lipoprotein (HDL)contain more protein less lipid and bad form contain more lipid than ...

**Chemistry**

When an element reacts with a compound to produce another element and new compound, the reaction is called?

**history**

when and how does Germany unite? What are the causes and consequences of the rebellions 1837-36 upper and lower canada? What are the causes of movement and the liberal movement National Europe in the first Motie nineteenth sciècle

**Chemistry**

thank you !

**Chemistry**

bond angles and polarity for trans-PF3Cl2