Posts by s

Total # Posts: 528

Science
Choose an ecosystem to research with regard to abiotic factors and how organisms in that particular ecosystem depend on those abiotic factors. Write a paragraph that describes the ecosystem that you selected and how organisms compete for abiotic factors within that ecosystem. ...

Stats
Cans of regular Coke are labeled as containing 12. Statistics students weighted the content of 10 randomly chosen cans, and found the mean weight to be 12.1. Assume that cans of Coke are filled so that the actual amounts are normally distributed with a mean of 12 and a ...

Math
50/3=16 R2 so 17 cans

chemistry
Phosphorus atoms will be incorporated into the bony structures of the body. The radiation emitted by the decay of radioactive isotopes will destroy some of the bone marrow cells, which reduces red blood cell production.

social studies
read the map and answer What is the elevation level of boston Massachusetts?

Algebra
how do you solve xp-yp=z

Physics
A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls 3.20 m before landing. Neglecting friction, how far horizontally does the skier travel in the air before landing?

physics
js

College Algebra
4.(3)^1/2 6.92

Physics
.003

Physiology
c

chemistry
An automobile maker has an order for 7,500 new cars to be delivered in one week. Each car must be fitted with a new hood ornament that requires 1 hour and 15 minutes to install. Assuming the factory operates on a standard workweek shift (8 hours per day for 5 days), how many ...

Finance
10000

National Junior Honor Society Essay Check
Many gramatical errors.

ELA
I need figurative language on the genre fantasy

Statistics
THE NULL ALWAYS STATED THAT THERE IS NO RELATION BETWEEN THE TWO VARIABLES.

abnormal child psychology
sese

Thermodynamics
A heat pump works on the vapor compression refrigeration cycle with 0.2 kg/s of refrigerant-134a as the working fluid. The cycle is used to keep a house at 26oC while absorbing heat from the outside at 3oC. R-134a enters the compressor at 200 kPa as a saturated vapor and ...

Chemistry
What is the solubility in grams per liter of SrSO4, in 0.23 M Na2SO4? Ksp for SrSO4 = 2.5E-7

Physics
sxd

Chemistry
Okay, thanks so much for your help!! :)

Chemistry
Is this the correct way to set it up & solve for the problem? [OH-] = 10^-11.63 [OH-] = 2.34E-12 I wasn't sure if it was the same set up as it is for the hydronium ion.

Chemistry
A detergent solution has a pH of 11.63 at 25°C. What is the hydroxide-ion [OH-] concentration?

business law
testing

Math
10 total marbles 3/10 red 1/9 white (since the marble isn't replaced) So, 3/10 x 1/9 = 1/30

Math
10 total marbles 3/10 red 1/9 white (since the marble isn't replaced) So, 3/10 x 1/9 = 1/30

math
3 ft = 1 yd So, 2355 ft/3ft = 785 yd

math
That's not true. 0 isn't equal to 16. & It isn't greater than 16.

math
definition of area ??? helpp :/

Chemistry
Is (NH4)2 CO3 ionic or covalent?

Chemistry
Made a mistake. ****Mole Fraction = 0.0303 moles NH4CL

Chemistry
Thanks so much for the feedback! I think I figured the answers out! :) Molarity = 0.161 M Molality = 1.74 m Mole Fraction = 1.57E-4 moles NH4Cl

Chemistry
An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure where to start. M = moles solute/1 L solution...

Chemistry
Thanks so much for your feedback! :)

Chemistry
Wouldn't I just leave the answer as 0.0003 moles since the question is asking for the amount of the moles of the iron ion Fe +3 ? :) That's when I got confused.

Chemistry
A student mixed 15.0 mL of a solution of 0.0200 M ferric chloride FeCl3, with 25.0 mL of water. Calculate the moles of iron ion, Fe +3 in the resulting solution. (I think this is a Dilution problem, but I wasn't really sure how to start it out. Any help would be greatly ...

Physics
32.86

Grade 12 chemistry
thats not an answer...

math
If the line 3x-4y = 0 is tangent in the first quadrant to the curve y = x^3 + k, then k is

Physics
Before starting this problem, review Multiple-Concept Example 6. The left ventricle of the heart accelerates blood from rest to a velocity of +20.6 cm/s. (a) If the displacement of the blood during the acceleration is +2.87 cm, determine its acceleration (in cm/s2). (b) How ...

physics
A cue ball (mass = 0.140 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.60 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision with a second ball of equal ...

physics
A 54.5 kg. skateboarder starts out with a speed of 1.90 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...

international economic
a. o,5 b. both 3% c.interest on Korean deposits will go down d.

Discrete Math
5000

MATH (REPLY FAST)
4-3|m+2|>-14

mATH
4-3|m+2|>-14

physics
Vector (V1) is 6.3 units long and points along the negative (X) axis. Vector(V2) is 9.0 units long and points at 55 degree to the positive (X)axis. 1- What are the (X) and (Y) components of (V1) vector ? 2-What are the (X) and (Y) components of(V2) vector ? 3-Determine the ...

5TH grade math
egw

american history
What successful northern naval victory stongly proved the value of sea power?

chemistry
is the answer 24?

chemistry
If I have 10 silver coins and they weigh 55 grams and displace water from 25 mL to 35 mL, what is the density? What is the specific gravity?

chemistry
how much heat energy would it take change the temperature of 50 mL of water from 23 C to 28 C?

chemistry
Using Kirchoffs law and a temperature difference of Δ T = 583 − 298 = 285 K ΔT=583−298=285K, I calculated Δ C p = ∑ ( p r o d u c t s ) C p , m − ∑ ( r e a c t a n t s ) C p , m ΔCp=∑(products)Cp,m−∑(reactants...

Human Resources Management
d

Math
Explain the difference between square root functions

Math
What does the solution of a system of equation mean? Give one example

law of sines and cosine
a house is built on a triangle plot of land. two sides of the plot are 160 feet long and they meet at an angle of 85 degrees. if a fence is to be built around the property, how much fencing material is needed

physics
it would move in the opposite direction due to conservation of linear momentum, but I don't really know why it would be considered 'rapid'...

english
the verb in this sentence is:After a pronlonged delay due to technical difficulties,the program resumed

algebra 2
sff

chemistry
These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the nitrogen sp2? OH is ...

chemistry
These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the nitrogen sp2? OH is ...

johnson
The length of a rectangular floor is 2 feet more than its width. The area of the floor is 168 square feet. Kim wants to use a rug in the middle of the room and leave a 2 foot border of the floor visible on all sides. What should the length (the longer side) of the rug be?

Psychology
Which if these questions does not help to assess the vaildity of research findings: a. How much did this study cost? b. Are the results presented fairly? c. What was the purpose of te research? d. How well was the study conducted?

Critical Thinking
What is one important distinction you could not overlook making when critically evaluating the information provided in these materials about the Boston Tea Party? Clarify the improtance of theat distinction.

MATH
STATE THE SLOPE AND Y-INTERCEPT OF THE EQUATION 5X-2Y=-10

science - chemistry
Some heat is supplied to a mixture of ice and liquid water in a closed container and the contents of the container are thoroughly mixed. If, after the addition of heat, both ice and liquid water remain: A) the temperature of the system will increase B) the vapor pressure will ...

physics
i don't know

physics
-25.0

Physics
1.1*10^-6 m/s west

Algebra 1
I need to find the equation for these function tables (ex. y=2x). Is there a general formula for finding the equation, or do I have to guess each time? 1. (4,3) (6,13) (8,23) 2. (5,22) (6,15) (7,8) 3. (4, 90) (6,82) (8,72)

Humanities
What are the different forms of social media that exists today?

AP Chemistry
Can someone answer this: 1) too high, B) too low or C) unaffected. In each case, explain how this result occurs a) after removing the flask from the water bath, the experimenter cools the flask to room temperature but does not dry it. The calculated molar mass will be: A) B) C...

8th grade math
If r = 12.5 and s = |−13|, which of the following inequalities is not true? A) r ≠ s B) r < s C) r ≥ s D) r ≤ s

algebra
false

algebra
percent means hundredth true or false?

algebra
the symbol % represents percent or percentage true or false

3rd grade
asking about a halfway number is irrelavent?

3rd grade
R wants to round 47 to the nearest ten. Which halfway number can help him? 45, because it is halfway b/w 40 & 50 or 50, because it is halfway b/w 0 & 100?

Chemistry Honors
I need help balancing equations 1) CH4+O2-->CO2-->+H2O 2) Hf+N2-->Hf3N4 3) Mg+H2SO4-->MgSO4+H2 4) C2H6+O2 -->CO2+H2O 5) Pb(NO3)2 + NaI--> PbI2+NaNO3 6) Fe+O2-->Fe3O4

math
Melissa collected 3 kinds of leaves when she was out walking--- elm, maple, and oak. She has 2xs as many maple leaves as elm leaves and 5xs as many oak leaves as elm leaves. Altogether, she has 32 leaves. How many of each kind does she have?

algebra
solve for x: 2x+3y=8

math
an airplane flew with the wind for 30 minutes and returned the same distance in 45 minutes. If the cruising speed of the airplane was 320 mph what was the speed of the wind ?

Math - I need this by midnight std time
a wedge shaped skate boarding ramp rises to a height of 15 inches over a 35 inches horizontal distance find the slope of the ramp t

statistics
mean 114 sd=8.608

classics
i meant Socrates not Sorates, sorry.

classics
can i say that Sorates head is in the clouds when he is portrayed up in the clouds in Aristophanes comedy clouds

5th grade
821213 4243 __________ Place the numbers like this then solve 821213*3, then go on to the next line and place a 0 under the last number of your previous answer, then solve it for 821213*4, then under this add two 0s and solve it for the 2, then three 0s underneath that and ...

classics
I need help writing an intro and conclusion for an essay. The thesis is : Socrates is depicted differently in Plato's dialogue and Aristophanes' Clouds in terms of the education he provides and his beliefs. I already wrote most of the middle, and am having serious ...

Classics
I have written most of the paper. The thesis is Socrates is depicted differently in Plato's dialogue and Aristophanes' Clouds in terms of the education he provides and his beliefs.

Classics
Thank You I am still having writers block writing an intro and conclusion, any ideas of things I can put in would be appreciated.

Classics
I am doing an essay on Aristophanes Clouds and The Trial and Death of Socrates by Plato. I am trying to find differences in the types of education Socrates provides? I am unclear whether he actually charges a fee in Plato ( it seems that he doesn't) ? It also seems that in...

Classics
What are some similes in The Odyssey? (lattimore translation)?

CH102
Well I didn't figure it out .... wtf kinda HW website is that frekin retards have all the Qa and no As !!

book report-English
What are some character conflicts that exist in Willy Wonka and the Glass elevator?

History
- The ways in which states around the globe have related to each other during various periods and the issues that have shaped their interactions. I need 4 specific events, at t 1 of which must come from the period prior to 1700, t one must come from 1700-1900, and 1 must come ...

Chemistry
A.136.5 or 137 B. 476

math
square root of negative numbers?

Philosophy1
Locke says, “Make these intervals of memory and forgetfulness to take their turns regularly by day and by night, and you have two persons with the same immaterial spirit, as much as in the former instance two persons with the same body.” I am having trouble ...

philosophy
what is the immaterial spirit?

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