Saturday
August 29, 2015

Posts by ANONYMOUS


Total # Posts: 83,617

college chemistry
does the ph equal 0?
May 20, 2015

college chemistry
how do you solve for H^14?
May 20, 2015

college chemistry
i cant get the answer!!
May 20, 2015

college chemistry
how do you find the ph of H+?
May 20, 2015

college chemistry
Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when [Cr3+] = 0.15 M, [Al3+] = 0.30 M, and [Cr2O72-] = 0.55 M. 2 Al(s) + Cr2O72-(aq) + 14 H+(aq) → 2 Al3+(aq) + 2 Cr3+(aq) + 7 H2O(l)
May 20, 2015

college chemistry
Consider only the species (at standard conditions) Na+, Cl-, Ag+, Ag, Zn++, Zn, Pb in ...? answering the following questions. Give reasons for your answers. a. Which is the strongest oxidizing agent? b. Which is the strongest reducing agent? c. Which species can be oxidized by...
May 20, 2015

ap chemistry
What volume of H2(g) and O2(g) is produced by electrolyzing water at a current of 4.00 A for 12.0 minutes (assuming ideal conditions)?
May 20, 2015

college chemistry
predict the order of reduction and which of the following ions will reduce first at the cathode of an electrolytic cell: Ag^(+), Zn^(+2), IO3^(-)?
May 20, 2015

physics
A plane flies at 20.0m/s ascending at 30 degrees above the horizontal. The plane drops a care package at a height that allows the package to land 750m away (horizontally). 1.) At what location above the ground was the package released? 2.) Find the velocity (magnitude and ...
May 20, 2015

college chemistry
how many grams of copper can be reduced by applying a 3.00 A current for 16.2 minutes, to a solution containing Cu^(2+) ions?
May 20, 2015

college chemistry
1. what voltage is necessary to force the following electrolysis reaction to occur? which process would occur at the anode? cathode? assuming the iodine oxidation takes place at a platinumm electrode, what is the direction of electron flow in this cell? 2I^(-)(aq)+Cu^(+2)(aq...
May 20, 2015

Math
Amanda wants to shorten the wheelchair ramp at her front door. The current ramp is 13 feet along the horizontal and the step is 9 inches high. If she doubles the measure of the angle that the ramp makes with the walkway, how long will the new ramp be to the nearest inch?
May 20, 2015

4th Grade Math
d:c=5:4 or d/c=5/4 or d=c x 5/4 or d=c*(1 + 1/4)= c+ c/4 But d=153-c then 153-c=c+c/4 or 153=2c+c/4=c*2 1/4= c* 9/4 or c=4/9 * 153=612/9=68 cats=68
May 20, 2015

Trig
Find sin2theta, cos2theta, and tan2theta for costheta = -12/13 in pi < theta < 3pi/2. My answers: 20111/24336 for tan2theta. 144/169 for cos2theta -120/338 for sin2theta
May 20, 2015

Physics
you hear the sum, and the difference: 910, and 90hz. And, your hear the original, 410 and 500hz
May 20, 2015

PHYSICS
The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 × 10-3 m2. The initial pressure, volume, and temperature of the gas are, ...
May 20, 2015

PHYSICS
I'm still not getting the right answer for it...
May 20, 2015

PHYSICS
vaporization takes place while the Hg is above 100C, or 100C+. so until the water heats to 100, no vaporization. HeatGained by water+heatgainedHg=0 .498*cwater*(100-81.6)+4.04*CHg*(Tf-210)=0 so calculate Tfinal for the Hg...note it is not in equilibrium with the water temp... ...
May 20, 2015

physics
Net force down=friction + weight = -mg*mu*Cos5+mg*sin5 so is the net force > 0?
May 20, 2015

physics
A skier stands on a 5 degree slope.if the cofficient of static friction is 0.1,does the skier start to slide down?
May 20, 2015

math
find the discount on proceeds on a 3,270 face value note for 6 months if the discount rate is 9.5 percent
May 20, 2015

Science
Thank you:)
May 20, 2015

Science
what happens immediately before a volcano erupts ? a) magma collects in the mantle** b) lava hardens to form volcanic rock c) expanding gases pushes magma through the pipe d) the temperature in the magma chamber decreases
May 20, 2015

chemistry
3g of a metal (iii) reacts with mercury (ii) chloride to form metal (iii) chloride and mercury (ii) iodide. Identify unknown metal product.
May 20, 2015

physical science
The force of gravity acting on a body is 675 newtons. find the mass of the body to the nearest kilograms.
May 20, 2015

physical science
Why is the atmosphere pressure lower on a high mountain peak than at sea level?
May 20, 2015

Trig
Thanks to both!
May 20, 2015

Trig - My Mistake
Sorry, I meant, "Which is sin theta/2?"
May 20, 2015

Trig
For 90<theta<180, cos theta = -(5/13). Which is sin theta? 1. - sqrt 13/9 2. - sqrt 9/13 3. sqrt 9/13 4. sqrt 13/9 3?
May 20, 2015

Trig
Which is cos2 theta if sin theta = -2/sqrt13 and 180 < theta < 270? 1. -(13/5) 2. -(5/13) 3. 5/13 4. 13/5 3?
May 20, 2015

geometry
A cone has a volume 320 cm^3. Find the radius of the base. Round your answer ti the nearest 0.1 cm.
May 20, 2015

math
Question 11. 11. How many lateral edges does a 50-gonal pyramid have? How many lateral faces? (Points : 20)
May 20, 2015

math
Ten participants are randomly selected from a population of patients with history of heart disease to be tracked in a health study. The study begins with an initial assessment of health status. The participants are instructed to return for a follow up visit one year after the ...
May 20, 2015

science
the cake is sititing on table with a gravitation force of 57.6 and a normal force of 57.6 what is the sum of all forces
May 20, 2015

physical science
What is the momentum, in kg-m/s of a 54,000 kg ship going 12 mph?
May 19, 2015

physical science
How many kilojoules are required to melt 5 lbs of gold if its initial temperature is 1000 K?
May 19, 2015

Math
13 more than the product of m and 5
May 19, 2015

college chemistry
How did the change in concentration of the copper ions affect the cell potential? Is this change in agreement (qualitatively) with that which would be predicted by LeChatelier's Principle? explain.
May 19, 2015

Science
How can using biomass fuels instead of gasoline in car engines help conserve natural resources? a. I makes cars run faster. b. It burns more fossil fuels. c. It reduces the use of coal.<---- d. It uses a renewable resource.
May 19, 2015

science
Which of the following is the best course of action when it comes to using natural resources? A. Only nonrenewable resources should be carefully managed B. Only renewable resources should be carefully managed C. Conservation should be implemented for both renewable and ...
May 19, 2015

science (any tutor)
thx
May 19, 2015

science (any tutor)
NVM I am done and I got a 100% on my quiz!!!!!:):)
May 19, 2015

science (any tutor)
Which kind of pollution is illustrated by a pipe gushing polluted water into a river? A. Point source*** B. Nonpoint source C. Carbon source D. Resource source
May 19, 2015

Chemistry
I need help on these last three problems on my Hw. 1. A 10.0 L sample of gas at 3.00 degrees Celsius is cooled at a constant pressure until it reaches 1/2 of its original volume. At what temperature in K will this volume be reached? (Charles law) 2. 994 mLof gas is collected ...
May 19, 2015

Math/Algebra
Help please. Find the Volume of the cylinder. use 3.14 for pi. Diameter of 34 M height of 27 M
May 19, 2015

chemistry
thank you
May 19, 2015

chemistry
1. what would happen to the the cell potential in a voltaic cell if the salt bridge lost contact with one of the solutions? 2. would a reaction occur if solid tin was placed in a solution of copper II nitrate? If so, write the balanced net ionic equation for the reaction.
May 19, 2015

college chemistry
what was the value for this nernst equation? Another question: How did the change in concentration of the copper ions affect the cell potential? Is this change in agreement (qualitatively) with that which would be predicted by LeChatelier's Principle? explain.
May 19, 2015

college chemistry
whats the answer for the nernst equation?
May 19, 2015

college chemistry
the Cu(No3)2 solution was diluted to 0.001 M. The voltage was measured against standard zinc electrode and found to be 0.89 volts.. 1. write the cell reaction. 2. write the line notation for the reaction. 3. Use the nernst equation to calculate what the expected voltage should...
May 19, 2015

theory of evolution
^^ yea, sorry that was a typo. Thank you for your help!!
May 19, 2015

theory of evolution
if you guys could check my answers I would be really grateful A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred through several ...
May 19, 2015

Quadratic Functions and Calculus
I have used the three data point which is given in part A of the question. the three input was $10000 in week 0 in week three it is $2025 and the 6th week it is 64% of the initial investment. I have also put the last digit of my student ID which is an integer power of 2 which ...
May 19, 2015

Phyics
Why does the emission spectrum of an element consist of discrete wavelengths
May 19, 2015

math
List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.
May 18, 2015

math
Estimate the area under the curve f(x) = 16 – x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. Answer to the nearest integer.
May 18, 2015

Algebra
a business has $8600 invested at 12% and $7000 at 9.5% interest. How much interest is earned in one year?
May 18, 2015

Science
Sorry Ms Sue I forgot to separate them A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred through several generations of plant species...
May 18, 2015

Science
^^^^ just fixed it thanks for the tip
May 18, 2015

Science
Can you please help me answer just a couple questions A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred through several generations ...
May 18, 2015

theory of evolution
^^sorry this was my first time posting this question lol
May 18, 2015

theory of evolution
If you could help me with this I would appreciate it In Europe, three lineages of bears evolved from a common ancestor. Two of those lineages led to present-day black bears and brown bears. The third lineage led to cave bears that went extinct 24,000 years ago. Which of the ...
May 18, 2015

Art please help!
I GOT A %100 YAY OK THANK YOU SO MUCH!!
May 18, 2015

Art please help!
Wow! Thank you so much for the help! It really helped out!
May 18, 2015

Art please help!
Oh! I forgot to put my answer for #8. I think it could be c- floor plan
May 18, 2015

Art please help!
Oh so its probably b then? Diversity!
May 18, 2015

Art please help!
There's also one more question I need help with? 8. What type of plan is the best choice for an architect who wishes to show a client how much space will be used throughout the home? a- blueprint b- contour drawing c- floor plan d- elevation value Its fine if you dont want...
May 18, 2015

Art please help!
Wow ok thanks :)!! 6.Why was it important to gather stone from five different statesto use in the constuction of the Lincoln memorial? a- different stones gave the structure added strength b- different stones symbolized the diversity and unity of all states c- different stones...
May 18, 2015

Art please help!
Ok Thank you so so much!!! Would you mind helping me with 2 other questions?
May 18, 2015

Art please help!
Could #4 be D?
May 18, 2015

Art please help!
for 5 my answer is d but i think it can also be b
May 18, 2015

Art please help!
1. Why was it so important for the Greeks to honor and represent the gods and their currency? a- the greeks enjoyed the stories of the gods. b- the greeks were inspired by the beauty of the gods. c- the greeks lived in constant fear of the gods. d- the greeks believed the gods...
May 18, 2015

Art please help
Ok.. thanks though! I do appreciate the help given :)
May 18, 2015

Art please help
I've never heard of it either... To make it you would need a construction worker?
May 18, 2015

Art please help
Oh I'm sorry! I didnt mean to add the because at the end
May 18, 2015

Art please help
Oh I'm sorry! I didnt mean to add the because at the end
May 18, 2015

Art please help
Ms. Sue please help!
May 18, 2015

Art please help
bramante would have needed the help of what type of specalist to to design a stucturally solid dome on St. Perter's because Basilia? a- engineer b- landscape architect** c- construction worker d- scientist am i right?
May 18, 2015

math
but it doesnt make sense
May 18, 2015

math
A contest winner is given a choice of 2 prizes: Prize 1: $1 today, $2 tomorrow, $4 on day 3, and so on, for 30 days. Each day the winner recieves twice as much as the day before Prize 2: $1 today, $3 tomorrow, $9 on day 3, and so on, for 20 days. Each day the winner recieves 3...
May 18, 2015

Math
A park has a rectangular playground area that has a length 66 feet and width of 42 feet. The park department has 75 yards of fencing material. Is there enough fencing material to enclose the playground area. Explain
May 18, 2015

science (any tutor)
Srry bout caps:) Just saw!
May 18, 2015

science (any tutor)
It said the same exact thing! I SUBMITTED MY TEST SO NOW MY TEACHER IS GOING TO CHECK IT THEN i LL LET U KNOW WHAT HAPPENED if I REMEMBER:)!!
May 18, 2015

science (any tutor)
Similarities in the early development of chickens and opossums suggest that these organisms share a________. common ancestor???
May 18, 2015

science (any tutor)
Thanks:)
May 18, 2015

science (any tutor)
Natural selection??
May 18, 2015

science (any tutor)
a farmer sprays insecticide on his crops and notices that the insect pest problems disappear. a year later he tries the same insecticide only to find that he did not achieve the same result. the insect population shows resistance to the insecticide.This is na example of _____ ...
May 18, 2015

science school
A body of mass 20g appears to have a mass of 13g in oil and 12g in water what is the relative density of oil.
May 18, 2015

science (any tutor)
thx:)
May 18, 2015

science (any tutor)
Narwhals are aquatic mammals known for the giant tusk that protrudes from their upper lip. These mammals live in artic waters and can spend more than three hours at a time underwater at great depths that would crush other animals. The narwhal's ability to endure such long ...
May 18, 2015

science (any tutor)
Similarities in the early development of chickens and opossums suggest that these organisms share a________. common ancestor???
May 18, 2015

science (any tutor)
Very few fossils of jellyfish or their close relatives have been found. This makes it hard to trace the evolutionary history of jellyfish using the fossil record. What explains this? A. Jellyfish fossils are buried deep under the ocean floor, not in land areas where scientists...
May 18, 2015

science (any tutor)
Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers (the part of the root that people eat) of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato ...
May 18, 2015

science (any tutor)
thanks!
May 18, 2015

science (any tutor)
2. How did Darwin and Lamarck differ in their thinking about change in species? A.Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism’s environment. B.Darwin thought that change could occur ...
May 18, 2015

science (any tutor)
3. Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato blight that had wiped out the potato ...
May 18, 2015

Ms. Sue PLZ HELP!!!(science)
I meant to say ok no prob if ur not Ms. Sue! Thanks anyway:):)
May 18, 2015

Ms. Sue PLZ HELP!!!(science)
ok o prob if r not Ms. Sue! Thanks anyway:):)
May 18, 2015

Ms. Sue PLZ HELP!!!(science)
When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature *** B. laboratory experiments C. extensive fossil collections D. genetic sequences
May 18, 2015

theory of evolution
^^^Thank you!!!
May 18, 2015

  1. Pages:
  2. <<Prev
  3. 6
  4. 7
  5. 8
  6. 9
  7. 10
  8. 11
  9. 12
  10. 13
  11. 14
  12. 15
  13. 16
  14. 17
  15. 18
  16. 19
  17. 20
  18. Next>>

Members