Thursday

July 24, 2014

July 24, 2014

Total # Posts: 45

**Area of rectangle**

The length of the flag needs to be 1.9 times the height. If the flags height is 3 feet, then what is the area of the flag?

**science**

What is the gram formula mass of NaC2H3O2 multiplied by 10H2O

**Art Please check answers**

These are all right i got 20/20

**Art Please check answers**

These are all right i got 20/20

**english literature**

witty characteristics of Touchstone in as you like it

**fsu**

Red light has a wavelength of 691 nm. Convert this wavelength to meters.

**Chemistry**

Sorry didn't see...thank you!

**Chemistry**

Please help verify my answer. Not confident it is right: please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb...

**Chemistry**

Please help verify my answer. Not confident it is right: please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb...

**Chemistry**

Please disregard my 2 comments after. I finally had my Eureka moment and figured this all out. Thanks to your help and researching a bit more I feel I understand this now. Your efforts in helping me were not wasted lol. Thanks again!

**Chemistry**

Hi again - was just comparing part c with your notes and I have an extra Oxygen on left side that right side doesn't have?? Perhaps your mistaken and oxygen is reduced?

**Chemistry**

Hi yes sorry the arrows didn't work out when I copied the question. For the following in your answer 2SO2 + O2 ==> 2SO3 And that is a REDOX equation. S changes from +4 to +6; oxygen changes from zero (the O2 is zero while the O in SO2 is unchanged) to -2 in SO3. Why is ...

**Chemistry**

Please help me verify: The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify which of these reactions are REDOX reactions. a. 2SO2(g) + O2(g) �� 2SO2(g) -2 -2 0 -2 -2 No change - not REDOX reacton b. 3NO2(g) + H2O(l...

**Chemistry**

please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) +2 +4 +2 +4 Zn(s)->Zn2+(aq)+2e- (zinc is oxidized)...

**Math**

Hi, no it wasn't. I think the assessment website is buggy because it didn't feel right. I have to contact the college and inquire. Thanks anyways as your answer made me see that there is a problem with site.

**Math**

Thank you...

**Math**

Hi I have a sample question for a math assessment that I wanted to ask about: What number is expressed by (9 x 6) -s- 3? a 18 b 27 c 6 d 21 Which of these answers is right and what is "s" suppose to mean? Is S like some sort of fixed value?

**Chemistry**

Yes that's right, free states have oxidation number of zero. Ok will work out reduction and oxidation, made it a bit clearer. Thanks for your help, very valuable :)

**Chemistry**

Following question I need help with part b) Please verify my answer for part a) too if possible. Consider the following reaction for silver tarnishing: 3Ag2S(s) + 2Al(s) -> 6Ag(s) + Al2S3(s) a. State the oxidation number for each element in the reaction. 3Ag2S(s) + 2Al(s) -...

**Chemistry**

Having it explained that way makes it easier to understand and helps to verify answer in the end which my course didn't explain. Thank you.

**Chemistry**

Please help me verify the following question: Consider the following ion; XF2-2 What is the oxidation number assigned to element “X”? Show your work My answer: X F2-2 X -1(-1) X -3=0 X = +3 Please let me know if right. Many thanks!

**Chemistry**

That's what I thought....Thank you !!!

**Chemistry**

Hi there - I'm going to post the question as written in my book. Three 20.0 mL samples of nitric acid are titrated with a 0.200 mol/L solution of sodium hydroxide. The results for the three trials are shown in the table below. What is the concentration of the hydrochloric ...

**math**

Plywood is sold in rectangle sheets 4 feet wide and 8 feet long. How many 4x8 sheets of plywood are needed to completely cover a rectangle shaped floor measuring 16 feet by 12 feet

**Math**

pls. verify: 4x^3y^-2 / 2x^-1y^4 = 2x^4y^-6 [w^1 / w^-3]^-4 = 1/w^16

**math**

Thank you Sir.

**math**

Hi - please help me with this one: (5b^2c^1/4)^3 is the answer: 125b^6 3c ^ 3/4

**Math**

Not clear about this, please help me understand the steps: (5b^2c^1/4)^3

**Math**

Thank you! Is that 9 cm or just 9 ?

**Chemistry**

Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question, please read below. Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would pr...

**Chemistry**

I got lost in all the material I'm learning which is why I posted here. Thank you for helping me sort all this out. I was looking at the problem all wrong thinking that the NaOH was a liquid. Very new to chemistry...slowly but surely getting it, thanks for your help, it ma...

**Chemistry**

Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question, please read below. Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would pr...

**chemistry**

amazing help - this is what I got too however they also want me to explain the steps I would take to prepare this solution. I'm using a graduated cylinder to measure the sodium hydroxide and need to convert the 5 grams to ml. I'm not sure the steps to take. Do I use th...

**chemistry**

Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would prepare this solution. Include any calculations that you would perform.

**advanced math**

Omelette du fromage!

**algebra**

Omelette du Fromage?

**math**

ok i get it , thanks

**math**

im not sure how to complete the problem becuase my answer was 9312.82, not sure if this is correct

**math**

Barbara knows that she will need to buy a new car in 4 years. The car will cost $15,000 by then. How much should she invest now at 10%, compounded quarterly, so that she will have enough to buy a new car? Round to the nearest cent.

**Biology**

1) Why is it appropriate to call the endomembrane system a "system?" 2) The selective permeability of biological membranes is dependent on _______________. 3) Why is it unusual for a phosphlipid molecule to flip from one face of the membrane to the other? 4) What do ...

**Chemistry**

Dimethylsulfoxide (C2H6SO), also known as DMSO. How many moles of carbon are in 4 moles of DMSO? a 1 b 2 c 4 d 8 e not enough info

**Chemistry**

How many molecules of carbon dioxide (CO2) are there in 88g of carbon dioxide? a. 1 b. 2 c. 88 d. 1.2 x 10 24 e. not enough info

**Geography (Urgent)...**

I did calculate my footprint. It is larger than the world (mine is 3.4 vs. 2.2) I am wondering why this is. -Dex

**Geography (Urgent)...**

I need to know 3 reasons why my Ecological Footprint is smaller than the world average Footprint (3.4 vs. 2.2) I am unsure as to how mine alone is larger than the whole world's. THANKS -Dex

**science**

im doing this project too its a levelled assessed task and i needed help is that cheating?!!

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