Posts by c

Total # Posts: 464

Chemistry
CaSO4.2H2O ==> CaSO4 + 2H2O moles CaSO4.2H2O = 15.00 g x (1 mole CaSO4.2H2O/172.172) = 0.08712 moles. moles CaSO4 = same. grams CaSO4 = moles CaSO4 x molar mass CaSO4 = ?? Wait,.. how do I know the moles CaSO4? do I do .08712* CaSO4's gfm?

chemistry
so then would i find the gfm of the CaSO4? and get 136.2 as my answer?

chemistry
if you heat 15.00g of the hydrate CaSO4*2H20, and drive off the water, what is the weight of the anhydrous salt remaining? How do I go about solving this?

Chemistry
calculate the percent water in CaSO4*2H20 20.9%?

Chemistry
Ah, yes. I reversed it Thank you!

Chemistry
on heating the hydrate CaSO4*2H2O, how many moles of water should be driven off per mole of hydrate? 1 mole?

Chemistry
34.48%, percentage water of hydrate, final answer?

physics
A race car accelerates from rest at 5.7m/s squared. how fast will it be going at the end of that time? i need the abc method...( a-all variables, unknown 1st...b-right formula and algebraically rearrange it..c- solve it0

statistics
A = .0498 B = .5768

HCA 240
Radio Ad: Write a 150 to 200 word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the risk factors for arthritis, osteoporosis, and injuries from falls. Incorate prevention strategies such as proper nutrition (calcium, diet).

history
Struggling to answer completely and logically, please critique the below: Question: What were the similarities and differences between the five regions of British Colonial America and what factors worked to create a shared “American Identity” by the mid 18th century...

5th grade Math
i do not know

History
what were the similarities and differences between the five regions of British colonial America and what factors worked to create a shared American identity by the mid 18th century ?

social studies
what were the similarities and differences between the five regions of British colonial America and what factors worked to create a shared American identity by the mid 18th century

HCA 230
I guest I really don't understand this assignment. Compose a list identifying the major components of health communication. Who is involved in each component? How does each component promote health communication? If not utilized, how would it reduce health communication? ...

HCA 230
Thank You! C

HCA 230
I don't understand it. I guess my question is what do they mean by components.

HCA 230
Compose a list identifying the major components of health communication. Who is involved in each component? How does each component promote health communication? If not utilized, how would it reduce health communication? Provide examples.

HCA 220
What are the most important concepts you have learned in this course? How can you apply them to your life? What difference can the topic in this course make in your everyday life?

SCI 275
Urbanization, Describe environmental benefits and challenges of urbanization; describe two 1996 Dubai award winners

History
1. For the safety of the children and the continuity of the British civilization. 2.Some knew it was for the greater good, some thought it was to separate the family, some thought government played a major influence on a person private life.

Genetics
How could you use a reporter gene to see if a certain gene was an activator for an operon? Would you insert the reporter in front of the operon? Or with the activator gene?

College Algebra/Inequalities
solve the inequality x+3/x-2 less then or equal to 0

Science
I really don't understand this please can you give me an example? Am desperate!

Biology
Yo

physics
thanks for your help!!

physics
FYI - The symbols for ohms didn't work, that's what the U's with accents are.

physics
I'm confused as how to find the current for a circuit with both parallel and series resistors? R1 = 2 Ù R2 = 5 Ù R3 = 11 Ù R4 = 10 Ù V = 7 V R2 and R4 are parallel, then these are in series with R3, then this whole system is in parallel with R1...

chemistry
ii) What is the formula of 1, 3-butadiene

history
I need help with unscrambling these letters into 2 words ecnoevprmisrirtam.only hint it has to do with canada.

us history
its b

artist
WHICH ARTISTS HAVE BEEN IN THE ROMANTICISM MOVEMENT, AND PAINTED lANDSCAPES?

com 140
As a project manager, you are looking forward to completing your current project and then taking a European vacation with your bonus money. Shortly before bonuses are expected, however, you realize your team just missed reaching the financial goal for the quarter. As a result...

algebra
I am really stuck, can someone please help me with this? Multiply and simplify by factoring. Assume that all expressions under radcals represent nonnegative numbers. (type in radical form) ∛(y^13 ) ∛(16y^14 )

algebra
I have a computer progam that allows me to create the symbols.

algebra
Can someone please help me with this? Solve ∛(x+1) = 3

algebra
Do polymonials contain rational numbers as exponents?

algebra
Can someoe please help me figure this out? During the first part of a trip, a canoeist travels 63 miles at a certain speed. The canoeist travels 6 miles on the second part of the trip at a speed of 5 mph. slower. The total time for the trip is 5 hours. 1. What was the speed (...

algebra
Can someone show me how this would be simplifyed? 5^1/2 * 5^1/4

algebra
Is this a true statement? Polynomials and radical expressions differ because radical expressions contain rational numbers as exponents and polynomials do not.

algebra
Why is it important to simplify radical expressions before adding or subtracting?

algebra
How is adding radical exressions similar and different to adding polynomial expressions?

algebra
How would you explain how the laws of exponents work with rational exponents?

algebra
I think that the answer is 1173, please disregard:)

algebra
Cans omeone le me know if I arrived at the correct answer? To determine the number of deer in a game preserve, a conservationist catches 391 deer, tags them and lets them lose. Later 534 deer are caught; 178 of them are tagged. How many deer are in the preserve? I came up with...

algebra
I don't understand how to do this, can someone please help me? To determine the number of deer in a game preserve, a conservationist catches 391 deer, tags them and lets them lose. Later 534 deer are caught; 178 of them are tagged. How many total deer are in the preserve?

algebra
Find the LCM for u^3 + 6u^2 + 9u, u^2 - 6u I came up with u(u+3)(u-6) is this correct?

algebra
Can someone please help me, I'm stuck. Find all numbers for which the rational expression is undefined. 7/(3v+7)

algebra
I am having trouble with this. Add (simplify if possible) (x^2 + 11x)/(x^2 - 3x) + (x^2 - 6x)/(x^2 - 3x) I actully came up with two possible answers. (2x+5)/x-3 and (2x^2-5)/x-6x I'm not sure which answer is correct.

algebra
Find the LCM 10b^6 c^6, 5b^5 c^4, 14b^3 c^7 What is the LCM? I came up with 70(b^6)(c^7) Did I do this correctly? Thank you

algebra
Find the LCM 10b^6 c^6, 5b^5 c^4, 14b^3 c^7 What is the LCM? I came up with 70(b^6)(c^7) Did I do this correctly? Thank you

algebra
I am having trouble with this. Add (simplify if possible) (x^2 + 11x)/(x^2 - 3x) + (x^2 - 6x)/(x^2 - 3x) I actully came up with two possible answers. (2x+5)/x-3 and (2x^2-5)/x-6x I'm not sure which answer is correct.

algebra
6x^3/36x)*(49v^4/7v^2) =[(6/36)*(x^3-1)]*[(49/7)*(v^4-2)] =[(x^2)/6]*(7v^2) =(7v^2x^2)/6 Is this the right answer? I feel like I missed something.

algebra
Can someone let me know if I hve the correct answer? Divide and simplify (x^2-16)/(49x+196)÷(x-4)/28 I came up with the answer 28/49 is this correct or can it be simplified more?

algebra
I do not think that this has a solution, is that correct? (y-3)/(y-6)=3/(y-6)

algebra
I can't figure this out, can someone please help me? Add 6/(x-4)+ 6/(x+4)

algebra
Thank you:)

algebra
I am having trouble with this, can someone please help me? Add (simplify if possible) x^2 + 11x x^2 - 6x __________ + __________ x^2 -3x x^2 - 3x

algebra
I am having trouble with this, can someone please help me? Add (simplify if possible) x^2 + 11x/x^2 - 3x + x^2 - 6x/x^2 - 3x

algebra
4-v/v-9 - 2v-5/9-v I came up with v-1/v-9 Is this correct?

algebra
Solve 8/y+4 = 7/y-7 y=84 did I solve this correctly?

algebra
Solve 8/y+4 = 7/y-7 y=84 did I solve this correctly?

algebra
This problem asks me to subtract and simplify if possible 4-v/v-9 - 2v-5/9-v I came up with v-1/v-9 Is this correct?

algebra
I am having trouble figuring this out. ADD (r - 6s + 3) + (7r + 5s) + (s+5)

physics
1.2g projectil e shot horiz. at a speed of 105m/s off a 124m high cliff. a) determine time taken by the projectile to return to the ground..

algebra
On a graph, what is the slope of (-2,0); (0,1)?

algebra
I wrote this wrong on my last post, it should have read, On a graph, what is the slope of (-2,0); (0,1)?

algebra
On a graph, what would be the slope of (0,-2); (0,1)?

algebra
Using the intercepts to graph the equation X + 5y = 10 What points would I plot on the graph?

algebra
Using the intercepts to graph the equation X + 5y = 10 What points would I plot on the graph?

algebra
How would I use the intercepts to graph the equation x+2y=4 what points would I need to plot on the graph?

algebra
Is this pair of lines parallel, perpendicular, or neither? 2x+5y=7 5x-2y=8

algebra
7[76-(-47-59)]= I am to simplify this. Is the correct answer 638?

algebra
On a graph, what is the slope of the line -2,1?

algebra
7[76-(-47-59)]= I am to simplify this. Is the correct answer 638?

algebra
How would you solve this using the multiplication principle? -7x>1/15

algebra
I need help with these please. What is the solution for 0.7x+5¡Ü1.1x-8? What would be the solution for, 15a+5b-12a-8b=

algebra
Can someone help me with this please? I am trying to find the solution for 5/(4x) + 1/(8x) = 5/8 + x x = ? would the answer be x=5/3?

algebra
Would the answer be x=5/3?

algebra
Can someone help me with this please? I am trying to find the solution for 5/4x + 1/8x = 5/8 + x x = ?

algebra
What would be the slope of -3?

algebra
Graph the system of inequalities x (lesser or equal to sign)2 y (greater or equal to sign)-2x+4 I am having trouble understanding what points to plot on the graph and also how the graph should be shaded (if at all).

algebra
I am having problems with both of these questions. 1. Hockey teams receive 2 points when they win and 1 point when they tie. One season, a team won a championship with 67 points. They won 11 more games than they tied. How many wins and ties did the team have? Wins? Ties?

algebra
Can someone please help me with this? Use the set-builder notation to describe the solution. 3(3-8x)+5x<2(9+6x)

I ddo not understand notation
sorry, it didn't post correctly. Graph the system of inequalities x (lesser or equal to sign)2 y (greater or equal to sign)-2x+4 I am having trouble understanding what points to plot on the graph and also how the graph should be shaded (if at all).

algebra
Graph the system of inequalities x¡Ü2 y¡Ý-2x+4 I am having trouble understanding what points to plot on the graph and also how the graph should be shaded (if at all).

algebra
Can someone please help me with this? Use the set-builder notation to describe the solution. 3(3-8x)+5x<2(9+6x) {x„ x ?,?} Thank you

algebra
I hope that someone can help me with this. 0.3(11x+4)is greater or equal to 2.1-(x+8) I came up with the answer x less than or equal to -71/43 Is this correct?

algebra
The coffee counter charges $9.00 per pound for Kenyan French Roast coffee and $8.00 per pound for Sumatran coffee. How much of each type should be used to make a 20-lb blend that sells for $8.40 per pound? Answer: Kenyan-8 lb; Sumatran-12 lb. Can someone help me with how they...

algebra
What are some examples of real life situations where you might use polynomial division?

algebra
What are some examples of real life situations where you might use polynomial division?

a
What are some examples of real life situations where you might use polynomial division?

Science
what instrument is used to measure water vapor content of air?

algebra
Casn someone help me please? I have a graph that shows the point on the y-axis to be 5 and the point on the x-axis to be 5. I need to find a) f(3) b) the Domain c) any x valuesfor which f(x)=1 d) the Range

algebra
In 1920 the record for a certain race was 45.4 sec. in 1950, it was 41.5 sec. let R(t) = the record in the race and t the number of years since 1920. R(t)=? What is the predicted record for 2003? What is the predicted record for 2006? in what year will the predicted record be ...

algebra
what is the slope intercept equation for 8 and y intercept (0,5) y=? I got y=8x+5 is this correct?

algebra
I got y=8x+5 is this correct?

algebra
what is the slope intercept equation for 8 and y intercept (0,5) y=?

algebra
x+2y=7 2x+4y=5 are the graphs of these equations perpendicular?

algebra
for the nonlinear equation f(x)=4x+4 x=2 x=4 is it correct to say that two inputs would be 12,20. If not could you help me with two inputs? Thank you

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