Wednesday
November 26, 2014

Posts by Anon


Total # Posts: 1,437

science
please anyone helppppppppp
November 25, 2014

science
explain how mutations in dna affect the traits of an individual
November 25, 2014

Math
7b - 2 = 1b + 10
November 25, 2014

chemistry
The National Institute of Science and Technology (NIST) kinetics database lists the rate constant, k, of a particular gaseous reaction as 8.56× 10–10 cm3·molecule–1·s –1 at 298 K. convert to units of M-1 s-1. convert rate constant to units of...
November 23, 2014

Math!
2/3 × 3/5
November 20, 2014

Math
Check for 2/3(k+8)=52
November 19, 2014

Math
-6(m+1)=24
November 19, 2014

chemistry
I figured it out! Thank you so much, I really do appreciate it.
November 19, 2014

chemistry
An ethylene glycol solution contains 18.2g of ethylene glycol (C2H6O2) in 85.4mL of water. Calculate the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.)
November 19, 2014

chemistry
So would it be Delta T = i*Kf(0 degrees C)*1.40 Delta T/Kf *1.40v= i?
November 19, 2014

chemistry
Benzene is a carcinogenic (cancer-causing) compound. A benzene-contaminated water sample contains 3.1×10−5% benzene by mass. What volume of the water in liters contains 225mg of benzene? (Assume that the density of the solution is 1.0 g/mL.)
November 19, 2014

statistics
70% of 8 students would be 5.6, so estimate either 5 or 6
November 18, 2014

calc
Is the gradient of a function basically like the slope field. Also what is a conservative vector field. I know the definition but I'm having trouble visualizing it Thanks
November 17, 2014

Math 6th
Andy ran a 5-kilometer race in 40 minutes. If Andy maintains that same place, how many kilometers did Andy run In 1 hour?
November 16, 2014

Social Studies HELP!!
What can we infer from "they ought to get the sane treatment as Mr. Carlisle? What did Mr. Carlisle do? What was his treatment?
November 13, 2014

chemistry
A gas mixture is composed of 4.3 grams of hydrogen (density at STP = 0.089 g/L) and 2.9 grams of helium (density at STP = 0.179 g/L). What is the percentage (v/v) helium in the mixture? If v/v = Volume of gas/total volume how would we find the volume of both of the gases?
November 13, 2014

chemistry
Would the answer be .25596? 8.1/100= .081 .081*3.16= .25596
November 13, 2014

chemistry
How many liters of CO2 gas are contained in a 3.16 liters of a gas mixture which is 8.1% (v/v) CO2? They never gave us the formula or a process to figure this out in class. Will you please help?
November 13, 2014

Physics
How fast is an object traveling after 3seconds if its terminal velocity is about 35 m/s.?
November 12, 2014

Physics
What is the horizontal component of the force of an object sloped at a 45° angle. pulling with a force of 110N.
November 12, 2014

Math
The number of meters decreased by 25.6 is 84.3 meters.
November 12, 2014

Math HELP!
Please help me write an equation for these two: Ten fewer than the number of band instruments is 47 instruments. The number of meters decreased by 25.6 is 84.3 meters
November 12, 2014

physics
An unidentified flying object is cruising 30.0° north of east at a speed of 2132 km/h. How fast is it moving to the north?
November 12, 2014

Social Studies
What did Samuel Adams and Paul Revere do in the Boston Massacre?
November 10, 2014

Math
a lab has two bacterial cultures. culture a contains 8×10^4 bacteria and culture B contains 4 × 10^6 bacteria. How do the two cultures compare in size?
November 10, 2014

Math
Choose a number. Multiply by 2. Add 6 to the product. Divide by 2. Then subtract 3. What is the answer? Repeat this process using two different numbers.
November 9, 2014

physics
A 2.7 kg object falls from a tower. It experiences 2.3 N of air resistance. What is the acceleration?
November 8, 2014

algebra
would multiplying 3 negative integers always equal a positive integer?
November 7, 2014

math
what about 3 negatives? would the product always be positive?
November 6, 2014

math
is a negative times a negative ALWAYS positive? or can it be negative as well?
November 6, 2014

please help! algebra
find the next two numbers in the pattern: -12, 60, -300, 1500
November 5, 2014

Math
X/4 + 7 = 3
November 3, 2014

Math
-1.4b + 10 = (-18)
November 3, 2014

Math
2/3y + 6 =15
November 3, 2014

chemistry
What is the volume occupied by 0.252mol of helium gas at 1.35atm and 305K ?
October 31, 2014

chemistry
A bag of potato chips contains 575mL of air at 25.0∘C and a pressure of 765mmHg . Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 458mmHg and the temperature is 10.0∘C?
October 31, 2014

chemistry
Thank you. That helped a lot.
October 31, 2014

chemistry
A balloon contains 0.126mol of gas and has a volume of 2.78L. If an additional 7.0×10−2mol of gas is added to the balloon, what will its final volume be?
October 31, 2014

chemistry
Calculate the concentrations of all species in a 1.22 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 M and Ka2 = 6.3× 10–8 M.
October 30, 2014

Math
How did the Proclamation of 1763 attempt to protect the Native American rights and land?
October 28, 2014

Math
The slowest mammal on Earth is the sloth. A sloth might move along a tree at a maximum rate of just 3 ^-1m each minute. At this rate, how long will it take a sloth to climb a tree that is 33 m tall?
October 27, 2014

college algebra
C(x)=.80+.33x
October 27, 2014

Mr. Anonymous
Max = (-5/3,0) Min = (0,0)
October 24, 2014

Chemistry
How many moles of ammonia are in 1.20E25 molecules of ammonia.
October 23, 2014

French
You can say "On dit X" (One could say X) or "Le mot est X" (The word is X)
October 23, 2014

Math
Write each expression using a single exponent. Xy^5 • x^3 y^7
October 22, 2014

Physics
The blades of a ceiling fan have a radius of 0.393 m and are rotating about a fixed axis with an angular velocity of +1.36 rad/s. When the switch on the fan is turned to a higher speed, the blades acquire an angular acceleration of 1.82 rad/s2. After 0.475 s have elapsed since...
October 18, 2014

Physics
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 54 cm and is wound around the top at a spot where its radius is 2.2 cm. The thickness of the string is negligible. The top is initially ...
October 18, 2014

Chemistry
or rather were questions
October 18, 2014

Chemistry
1)What could have caused the impurity in the sodium hydroxide solution? 2)Why was it necessary to dilute the hydrochloric acid before carrying out the titration? This was a question from a titration practical in which we had to dilute HCL then use that along with 25cm3 of NaOH...
October 18, 2014

Physics
A floor polisher has a rotating disk that has an 11-cm radius. The disk rotates at a constant angular velocity of 1.1 rev/s and is covered with a soft material that does the polishing. An operator holds the polisher in one place for 43 s, in order to buff an especially scuffed...
October 15, 2014

Math
(-3) ^-4 5 ^-2 =?
October 15, 2014

Math
How to solve 2^-1/5^2 ?
October 14, 2014

Math
3^-2/n and 7ab^-2/3w .
October 13, 2014

chemistry
A 300mL solution was made by dissolving 5.0g of MgCl2 in water. What is its molarity?
October 11, 2014

Algebra
A person has 29 1/2 yards of material available to make doll outfits. Each outfit requires 3/4 yard of material. a: How many outfits can be made? b: How much material will be left over?
October 11, 2014

Math
Melanie has 84 muffins, which he needs to box up, 9 of which are blueberry, into dozens. How many boxes does she need?
October 6, 2014

Math
Tim has forty five books. Jason has forty two times more books than Tim. How many books does Jason have?
October 6, 2014

SS
New France is _____ of the Appalachian Mountains.
October 5, 2014

statistics
A poll asked 500 adults if they thought Ontario should produce more, less or maintain current production of ethanol. -160 people responded "more ethanol production" -136 people responded "less ethanol production" -155 people responded "maintain current...
October 5, 2014

Physics
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is eighty-two times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites.
October 3, 2014

Physics
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 18.0 m. She pushes in a direction 20.0° below the horizontal. A 40.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? (b) ...
October 3, 2014

Physics
But how do you go about finding time since it is not given and you are only given a magnitude of the force and not the velocity
October 3, 2014

Physics
A golf club strikes a 0.041-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball's motion, has a magnitude of 6400 N, and is in contact with the ball for a distance of 0.012 m. With...
October 3, 2014

Physics
Suppose in the figure blow that +1.00 103 J of work is done by the force F with arrow (magnitude = 30.0 N) in moving the suitcase a distance of 51.0 m. At what angle θ, counterclockwise from the x-axis, is the force oriented with respect to the ground?
October 3, 2014

Social Studies (SS)
Sorry I accidentally put math but can you please Describe George Washington's expeditions into French territory.
October 2, 2014

english
nvm got it!
October 1, 2014

english
help on thesis writing
October 1, 2014

Math
Hi, I have two questions here I need help with, thank you in advance. 1. Peggy scored 68 on her first three tests of the term. What would she have to score on the fourth test to have an average of 70 on the fourth test? 2. If you were to place the digits 1,2,4,8,9, one per box...
October 1, 2014

Math help!
Thanks:)
October 1, 2014

Math help!
Identify the property of integers being illustrated in each of the following: a:(-2)(3) (the "E" letter) element of I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
October 1, 2014

Math help!
Identify the property of integers being illustrated in each of the following: a:(-2)(3) ¸ I b: (-4)0=0 c: -2(3+4)=-2(3) + (-2)4 d: (-2)3=3(-2)
October 1, 2014

math
If x is an integer and x is not equal to zero, which of the following are always positive and which are always negative? a: -x to the power of 4 b: (-x) power of 4 c: x to the power of 4 d: x e: -x
October 1, 2014

AP Calc B/C
the integration of (e^x)/(1-E^2x)^3/2 with respect to x We are currently doing integration by tables, but I can't find the formula that I should use!
September 29, 2014

Physics
A stone is tied to a string (length = 0.700 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
September 25, 2014

Physics
A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-ninth of its dry-road value. If ...
September 25, 2014

Physics
As you hurry to catch your flight at the local airport, you encounter a moving walkway that is 85 m long and has a speed of 2.2 m/s relative to the ground. If it takes you 68 s to cover 85 m when walking on the ground, how long will it take you to cover the same distance on ...
September 23, 2014

chemistry
A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 40 gallons of gasoline every month, producing about 750 lbs of carbon dioxide.\" To determine the truth of this statement, ...
September 18, 2014

chemistry
using your initial mass of copper, calculate the minimum volume of concentrated 12M nitric acid needed to completely react with your copper to form copper(II) nitrate? Original mass of copper was 0.40g.
September 18, 2014

Math
Calculate the dot product Ā·Ê(where Ê = Ē/E ~ is the unit vector in the direction of Ē ) and plot both Ā and Ê, showing how Ā·Ê is the projection of Ā on Ê. Ā= −4ˆi + 3ˆj Ē= 12...
September 18, 2014

chemistry
A 15.27 g sample of Mo2O3(s) is converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 18.33 g. Add subscripts below to correctly identify the empirical formula of the new oxide.
September 18, 2014

AP Calc B/C
Find the arc length of one arch of the sine curve. I started it by doing y=sinx, y'=cosx arc length= integral of sqrt(1+cos^2x)dx from pi/2 to 3pi/2 but I don't know how to integrate that! Thank you!
September 13, 2014

Accounting - General
Should a capital asset that is increasing in value be depreciated?
September 4, 2014

Physics
A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 7.8 m waterfall. If the spy's speed is 11 m/s and the officials' speed is 22 m/s...
September 2, 2014

Social Studies
In return for offering the throne to William and Mary, it was demanded that all laws had to be approved by? A: Parliament B: King James C: The Catholic Church D: The Protestant Church My answer is A. Can someone please check if this is right?
August 28, 2014

English
I'm writing an essay. Is this semi-colon used appropriately or should it be a new sentence? At the age of six, India seemed like a completely different world to me; they had a different way of life than anything I had ever been exposed to.
August 25, 2014

geography
why is the world round, but look flat???????
August 25, 2014

fitness
They send text books for this class! I'm in the class myself, but having trouble. These are not easy classes. You have to study!
August 16, 2014

AP Calc
When a chain hangs under its own weight, its shape is catenary. The equation of a catenary with a vertex on the y-axis is y=e^x+e^-x. Find the length of the chain from x=-2 to x=2. Then use the same technique from Problem #8(Previous AP calc problem I posted) to find the ...
July 31, 2014

AP Calc
The picture to the right shows the Ben Franklin Bridge which stretches across the Delaware River joining Pennsylvania and New Jersey. The center span of the bridge is about 4200 feet long. The suspension cables hang in parabolic arcs from towers 750 feet above the surface of ...
July 31, 2014

calc
q 0 125 250 375 500 625 750 C'(q) 27 35 41 45 43 46 51 Give fixed cost = 8800 and cost of producing 250 units is 17425, how much would the total cost increase if production were increased one unit, to 251 units? --- A cup of coffee at 90 degrees celsius is put into a 30 ...
July 21, 2014

math
add 12 to both sides of the equation, and you get this: q-12+12=89+12 q=101
July 17, 2014

HVAC/R
So what they are saying is that if the ANSI standard happens to be adopted by OSHA, THEN it has the "force of law". Is that what you are reading/interpreting? And that would mean that both are correct...
July 17, 2014

HVAC/R
I know Technician B is correct, but is Technician A also correct? Is there any "force of law" carried with these standards?
July 17, 2014

HVAC/R
Oops sorry - it's either Technician A or Technician B, or Neither or Both. Who is correct? Both of them? Or Neither? Or A or B?
July 17, 2014

HVAC/R
Two technicians are discussing the HVAC/R field. Technician A says that industry codes that require certain types of installation practices carry the force of law with them. Technician B says that ANSI is an organization that establishes codes for the HVAC/R field. Which one ...
July 17, 2014

statistics
Lebron
July 12, 2014

math
Let ABCD be a cyclic quadrilateral. Let P be the intersection of \overline{AD} and \overline{BC}, and let Q be the intersection of \overline{AB} and \overline{CD}. Prove that the angle bisectors of \angle DPC and \angle AQD are perpendicular.
July 2, 2014

spelling
Hi, learning math facts and equations can definitely be difficult. Atleast I know it was for me! A great way to practice and increase the abilities of your memory are using flash-cards or playing a couple rounds of the game memory.
July 1, 2014

Physics
What is the total pressure, in atmospheres, of a 10.0 L container that contains 10 moles of nitrogen gas and 10 moles of oxygen gas at 300 K? I tried using PV=nRT and added both P together but kept getting the wrong answer. n=10, T=300 K, V=1x10^-3 m^3
June 26, 2014

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