Total # Posts: 334

chem
Which has highest boiling point? H20, H2S, H2Se, H2Te i know its H20, but why? is it because its dipole dipole? does it have to do with electronegative, or polarity?

spanish
Look at your conjugations yo- pienso tu- piensas el/ella/ud.- piensa nosotros- pensamos ellos(as)/uds.- piensan Tu would be piensas

Math
When would you make a list to sove a problem?

us history
where can i go to read a text book if i forgot it at school

math
figured it out on my own thnx

math
find a 9 digit # that fits. the first3 #'s equal 1/3 of the last 3. The middle 3 #'s are the result of subtracting the first 3 from the last 3. All the digits from 1-9 are used only once. What is the number

Science
Easy! Metabolism is the rate of how fast your food digests

History 1301

Environmental Science
Hi Had a look at the sites, couldn't find any help. Do you know about IPCC? Cheers Brad

Environmental Science
Hi does anyone know how to calculate the UN's de facto temperature target using max co2 relative to 2008 that can be in the atmpsphere to the nearest Gtc? please

physics
A bowling ball weighing 71.2 is attached to the ceiling by a 3.90 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at 4.20 .

science
a balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa?

math
From the information you've given, the only thing i can come up with is that the animals cost one dollar each since it's 100 dollars for 100 animals

physics
when you connect an unknown resistor across the terminals of a 1.50 V AAA battery having a negligible internal resistance, you measure a current of 18.0 mA flowing through it .A)what is the resistance of the resistor. B) if you now place the resistor across the terminals of a ...

physics
a 40.0 ohm resistor and a 90.0 ohm resistor are connected in parallel, and the combination is connected across a 120 V dc line. A)what is the resistance of the parallel combination. B)what is the total current through the parallel combination. C)what is the current through ...

physics
a piece of wire has a resistance of R , it is cut into three pieces of equal length,and the pieces are twisted together parallel to each other. what is the resistance of the resulting wire in terms of R

physics
a 500.0 ohm resistor is connected in a series with a capacitor.what must be the capacitance of the capacitor to produce a time constant of 2.00 s

physics
a 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs. the box is initially pressed against the stronger spring compressing it 4.0 cm , and then is released from rest,A) by how much will the box compress the weaker spring,B) what ...

chemistry
what is the molar concentration of an aqueous NaOH solution when 45.0 grams are dissolved in water to make 100mL of solution

chemistry
Write a net equation for the reaction between aqueous solutions of Na2HPO4 and H2CO3.

Algebra
Without writing them all out, what is the number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder}?

physics
Bumpers on cars are not of much use in a collision. To see why, calculate the average force a bumper would have to exert if it brought a 1200 kg car (a so-called "compact" model) to a rest in 15 cm when the car had an initial speed of 2 m/s (about 4.5 mph). Bumpers ...

Physical Chemistry
For part A, I'm plugging into the Arrhenius equation, ignoring A, and then dividing the 2 rates for each activation energy. I'm getting 1.027 for my particular set of numbers (Ea = 120 & 56) @ 293K. This isn't correct though.

geometry
What is the volume of a cone with a radius of 3 and a height of 19?

trig
how do you simplify "[sin(x)+tan(x)]/[1+sec(X)]"

Physics
An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...

physics
Also, I found horizontal velocity = 25m/s, but I don't know where to go from there.

physics
An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...

Chemistry
5,17

survey math
11110 base 2 = (?) base 10

Math
What do you mean?

Math
Solve each literal equation for the indicated variable 2x-3y=4 for x The answer is suppose to be x=3/2y+2 I don't understand how you do this problem?

Math
Solve each literal equation for the indicated variable. 4x-5y=10 for y (the answer is y=4/5x-2) How do you solve this?

Physics II
A block begins to slide down a ramp after being elevated to an angle of 55 degrees. What is the coefficient of static friction?

how the tone and purpose of each essay is different?

Write an essay comparing Baldwin's account of the Titanic with Rosenthal's account of his visit to Auschwitz.In your paragraph, explain how the tone and purpose of each essay is different. Support your argument with at least one example from each essay.

calculus
find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) i am getting the y^3 dx when i do seperation of variables how do i deal with this.

calculus
find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) i am getting the y^3 dx when i do seperation of variables how do i deal with this.

math
I'm thinking of TWO numbers between 1 and 4 and so are you, what are the odds that we will have ATLEAST 1 number in common?

heterozygous dominant

dominant

Calc
Express the integral as a limit of Riemann sums. Do not evaluate the limit. ∫_1^3 x/(2+x^5) Ans: lim(n→∞)∑_(i=1)^n ?

spanish 2
doblar- to turn conducir- to drive derecho-right izquierdo-left la esquina- corner la calle- street el coche/carro-car la ciudad- city el pueblo- town pasar-to pass parar- to stop el cinturon de seguridad- seatbelt la tienda-store el supermercado- supermarket la iglesia- ...

math
add 5/4x and 1/8x then u get 11/8=11/8+x subtract 11/8 to the other side which leaves 0=x

Economics
Suppose that a movie theater owner faces the demand curve given by P=10-.001Q where P is the price of a ticket in dollars and Q is the number of tickets sold per week. Suppose that all the cost associated with the theater other than film costs do not vary with the number of ...

spanish
despues de las clases= after the classes me gusta= i like

math
how do use approximation to tell which fraction is greater

law ethics in medicine
I work in a hospital and have to be trained in HIPAA. Every employee in a hospital that has access to patient info has to be trained since HIPAA has to do with patient confidentiality

Creative Writing
you want something that's going to grab the readers attention. That the point of it. Think of a sentence that defines your topic and grabs my attention

Geography

physics
thanks! I forgot the formula >.<

physics
How does one go about solving this? A skateboard rider starts from rest and accelerates at a constant +.50 m/s^2 for 8.4s. What is the riders displacement?

Calculus
Basically its x+3=3x-5 so subtract x from 3 which gives u 2x then add 5 to the other 3 to balance it out which leaves u 2x=8. Divide each side by 2 and ur g is 4

Chemistry
Try to take the square root of both sides of the equation, and you'll get sqrt(16^2) = 16

Physiology
the mechanisms responsible for triggering cardiac hypertrophy are still a mystery. Hypothesize about possible signals and the steps that might be involved to cause postprandial cardiac hypertrophy in pythons.

Physiology
The amount of DNA (measured in ng per mg ventricle) decreased. One nucleus is present in each vertebrate myocardial cell (each cell is mononucleated). Explain how it is possible that a decrease in mass-specific DNA concentration indicates growth of ventricular tissue.

Physiology
Of what physiological advantage would increased stroke volume (and its related effect on cardiac output) be to an animal that just ate a meal?

Math
I need to find the vertex and make a graph using quadratics. y=xsquared+11x+10

chemistry
i just have a question about le chatelier's principle lets say you have: A(g) + B(s) --> C(g) + D(g) does adding more of B which is a solid shift it to the right? or will it have no effect because it is a solid? thanks

To: Reiny
I don't understand how there would be 48 cards left if you took out 3 cards, wouldn't you have 49 cards?

MATH
what is the probability of getting 3 of a kind in poker? 3 of a kind is: Any three cards of the same rank with two other different cards. I know the answer it suppose to be 54912/2598960 But how do you get that?

MATH
what is the probability of getting a royal flush in poker? I realize it is 4/C(52,5), but what are the combinations for the numerator?

polymers
is polymethylpentene monomer's toxic?

Polymers
What is the molecular formula for polymethylpentene?

Polymers
I have tried looking at those sites before, but it still doesn't mention what I'm looking for.

Polymers
Is polymethylpentene flammable? Does this chemical effect our health in anyway?

CHEMISTRY: polymers
Polymethylpentene are there any safety concerns, toxicity concerns about the polymer? any environmently concerns? is the monomer toxic, is the polymer toxic?

MATH:Solving with 3 variables
03p-0.25r-03q=0 0.8p-0.6r-0.05q=0 0.9p-0.15r-0.65q=0 I don't know if this help but i think p+q=1.

scientific notation
Express the answer in scientific notation to two decimals unless requested otherwise. A company produced 2,600,000 small appliances in one year and made a profit of \$6,690,000. What was the profit on each appliance?

MATH!!!
If the odds in favour of Neil beating Joe in a checker game are 5 to 4. What is the probability that Joe will win an upset victory in a best-of-five checker tournment?

Chemistry
Why are carboxylic acids and phenols acidic?

Science
because life's organisms also live in water and everything has to survive with water in order that there blood may flow, the cells may live, and things function

Physics
A tsunami, a great ocean wave, travels a distance of 7.2x10^6m in 2.88x10^4 what is the average speed of tsunami?

Chem
If 390 mL of 0.0410 M aqueous NaI(aq) and 1.36 g of liquid Br2 are reacted stoichiometrically according to the equation, what mass (g) of NaI(aq) remained? 2 NaI(aq) + Br2(l) ¨ 2 NaBr(aq) + I2(s) Molar Mass (g) NaI(aq) 149.89 Br2 159.81 Molar Volume (L) 22.400 at ...

chemistry
1) So since we are just filling it up to 200ml the volume does not change so it has the SAME concentration? 2) so if we add more water which increases the volume making it (mol / L <-- increased) resulting in a LOWER concentration?

chemistry
1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration ...

government
What would be a good grabber for a DBQ on the federalists and anti-federalists

managerial economics
As a manager, how might your pricing strategy differ if you are operating in a perfectly competitive market versus a monopoly market?

science
How does density affect the speed of sound?

Socials
because

physics
Haha ok i will for sure remember that

physics
thank you so much

physics
a person in a car traveling at 18meters/s drops a cherry pit out of the window 1meter above the ground. A. how far horrizontal will the pit hit hit ground from the initial dropping point ? B. if the car continues to travel at the same speed where will the car be in relation to...

intro to statistics
Use Norminv in excel(%, cup size, stanard dev ) then round to the 2nd decimal hope this helpful

algebra
you have four plates that have a radias of 60 cm. if you break the plates how much area will there be?

math
4/21 divided by 3 1/2

math
4*6*9*5*8*7*5*5*6*5*4*5*4*5*4*/123456.667- "the square root of 74"

Algebra
A rectangular fence has a perimeter of 1080 feet. The length is 3 feet more than twice the width. I need to know the dimensions and how to figure it out.

Algebra
A rectangular fence has a perimeter of 1080 feet. The length is 3 feet more than twice the width. What are the dimensions?

math
Teresa has 4 flower pots in 4 different designs. She likes to display her flower pots in different positions on her window sill. How many different ways can she place her flower pots.

math question
t=rv so you would replace the t with a 4 and the v with an 8 so it would equal out to 4=r(8)divide by 4 on both sides and u get r=2 W=xyz so replace.... W=2x3x6, 6x6, then ur answer is w=36 C=ab, C=(.65)(1.9), multiply and u get C=1.235 u just have to replace/substitute the ...

Science
fire is not a living organism. It has means of life except it burns faster with more oxygen. Fire does not support any lifestyle functions. It is only an element brad

History
Please help me revise my History essay. The Inevitable Decision: America’s Entry into WWI Words are cheap. The infamous maxim has survived throughout history and its value has been demonstrated on a multitude of occasions. One situation that is particularly fitting is ...

Bio
anyone else have any ideas. that is not working well either

Bio
I was doing some work on the Fluid Mosaic Model. I need to list the parts and functions. I have the following parts; glycolipid, glycoprotein, carbohydrate chain, phospholipid bilayer, integral protein, cholesterol, peripheral protein, and filaments of the cytoskeleton. I can ...

Brain Teaser
this is 2 years late but maybe one day someone will find this handy. It is circles under the eyes

Brain Teaser
looking for the same one

microeconomics
biuuhi ujghu_ig

spanish sra mcguin
4. prefiere 5. Puede 6. Pueden

spanish sra mcguin
yes it is, i checked in the dictionary

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