# Posts by CASSANDRA

Total # Posts: 254

**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

**math**

-0.001 is greater than or lesser than -3/100?

**Chemistry**

Is [PF5Cl]- polar?

**Chemistry**

In an experiment we did in class ethanol was poured into a test tube and we noticed that the ethanol did not collect and form a dome at the opening of the tube in the same way that water had. I know why water collected at the opening, but i'm not sure why the ethanol didn...

**Geometry**

in a right triangle if the adjacent A = 16, and the hypotenuse C = 20 then what is the oppisite B.

**science**

True or False...The CLOSER the origin of an earthquake to an inhabited area , the greater the destruction?

**geometry**

x=48

**health**

HCR23

**accounting**

Select a company that you are familiar with from the transportation industry. •Collect the 4 main financial statements from credible sources (e.g., nationally syndicated newspapers, peer-reviewed journals, investor relations, Web sites or annual reports. •Create a ...

**Statistics**

I HAVE NO IDEA!

**Chemistry 1**

What mass of potassium oxide is produced by the oxidation of 5 grams of potassium?

**American Government**

I really need help on this journal activity. In this assignment, you are to take each of the purposes form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty and...

**business**

What are the potential costs of adopting a free trade regime? Do you think government should do anything to reduce these costs?

**Chemistry**

Also MgSO4 is slight acidic and CaSO4 doesn't absorb water as well. So CuSO4 is easier to work with.

**Chemistry**

If it has to do with the determination of moisture, No, it can not, its used as an indicator to see if hydration is taking place, (or that the chemical is absorbing the moisture) If it turns blue, its indicating that water is present in the substance that you are testing, (...

**University of Phoeniz**

What does je dois aerer pour vivre mean?

**English**

pronoun antecedent agreement how can you rephrase this sentences into a more meaningful one. I really need this. Thank you for your help. :) 1. Before she could to her mother, she fainted. 2. Pamela bought a bracelet for her sister which she liked very much. 3. The dog crossed...

**statistics**

A travel agency offers 4 different vacation packages to Europe. Their net profit for package 1 is $500, for package 2 it is $750, for package 3 it is $900, and for package 4 it is $1,500. From past experience they know that 20% of their customers purchase package 1, 15% of ...

**statistics**

A shipment of 30 computers contains four that are defective. How many ways can a small business buy five of these computers and receive no defective ones

**2nd grade**

multiplication fact 2 times 1=b font understand it

**jeferson elm**

which of these words comes after the entry word anybody? 1. arm 2.animal 3.afternoon4.add

**Math**

FTC is the Fundamental Theorem of Calculus. Thanks for you help.

**Math**

Use FTC to evaluate a definite integral with basic integrand-- (integral) bottom number 0, top #2 (4x^3+1)dx=

**6th grade - English**

Nt is in/out

**FINANCIAL MANAGEMENT FOR HUMAN SERVICE MANAGERS**

XYZ NON PROFIT CORPORATION INCOME STATEMENT

**Chemistry**

I don't understand why you add the water heat of formation. Can someone please explain this, it doesn't make any sense to me.

**psy**

What can be done to turn the potential negatives of diversity, conflict, and other team challenges around?