Saturday
April 19, 2014

Posts by erik


Total # Posts: 69

math
a piece of silver density 10.5g displaces 4.5ml {cubed} of water in a test tube what is its mass?

English
no it is not

math
Jill bought a can of pop for .75 and jane bought a 6 pack.for 3.60 who got the best buy and why is it the best buy

science
10 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.1 M C2H3O2-. What is the pH of the resulting solution?

science
What is the gravitational potential energy of a 2kg ball on planet earth raised 15 meters in the air?

Math
On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?

statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16 of M. californianus. T...

statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16 of M. californianus. T...

Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31 samples from a location...

Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31 samples from a location...

Science
5.00 ml of 1.90M HCl is diluted to 0.400l. calculate the pH of the HCl?

nervous system
The pulmonary circuit and the ________ circuit make up the blood vessels of the body. A. Flexible B. Systemic C. Blood D. Capillary c?

body systems
i know its A i googled it

body systems
D?

body systems
Veins carry blood ________ the heart. A. Away from B. Towards C. Closer to D. All of the above c?

health
ummm A?

statistics
Suppose that a given population of trees have an average height of 10.2 ft and a standard deviation of 1.3 ft. Find the proportion of the population with heights above 11.8 ft.

Math
In the number 22! determine the largest prime factor.

chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq) ...

chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)<=>Cl^1-(aq)+HS^1-(aq) This is what I ...

Math
A sequence of four integers is both arithmetic and geometric. if the sum of the four numbers is 20, find the first integer in the sequence.

algebra
if four individuals share $270 in the ratio of 1:1:2:5, how much is the lagest share?

Physics: Three Identical Masses
Three identical masses of 640 each are placed on the x axis. One mass is at = -100 , one is at the origin, and one is at = 400 . What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? Take the gravitational constant to be = ...

Physics
A car goes around a curve on a road that is banked at an angle of 32.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

Trigonometry
Nevermind, figured it out myself....

Trigonometry
Verify Identity: cos5x-cos3x=-8sin^2x(2cos^3x-cosx)

English
Maya Angelou - I Know Why the Caged Bird Sings What Maya Angelou means by the title of her autobiography.? Please Help if you can

Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

Chemistry
Mg + 2HCl --> MgCl2 + H2 #mol=molarity x volume (3.00) x (.0132 L) = .0396 mol HCl half this in accordance with you balanced chemical equation to get #mol H2 = .0198. relate #mol of gas to volume --> (.0198) x (22.4) = 0.444...closest answer, (D.

Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

Statistics
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?

Chemistry
Im stuck on this question. The unusual aspect of functional group replacement of an alcohols hydroxyl group by chlorine by treatment with thionyl chloride is: A)spontaneous creation of a carboccation and SO2 Cl,the ion pair created by SOCl's mechanism of action. B)That oxy...

Math
I cant figure this question out. I could use some help. Solve for x lnx-lnx^2+ln5 = 0 Simplify the answer

physics
what is the torque a bolt with 30 cm wrench with an applied force of 650n?

chemistry
Why was the 400.5 multiplied by 100, then divided by the 694.8???

trig
1/4tan(2x)

7th social studies
from Kuwait go east to

Chem
what is the empirical formula of aspirin, C9H8O4? is it the same again ?

phi 103
is not the most important factor they consider when comparing two films---- not sure about this, but it seems to be the best answer

physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest? What moment of inertia do I use to figure our the torque?

physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest?

12th grade
The kinetic energy of a 50 newton object resting on the edge of a cliff 30 meters high is?

English
I'm not really sure what you mean-I just didn't understand this-I'm not pretending to be anyone else- I just needed help with this

English
Please help me interpret this-I'm in 8th grade and I don't have any idea: What is the main idea? Read the following quote from Thomas Paine's pamphlet, Common Sense. Summarize the main idea of the passage. "Some writers have so confounded society with governme...

College math
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the nearest 10-thousandth ov...

mathematics
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the nearest 10-thousandth ov...

verbs
thanks again

verbs
In heaven there are many mansions. "are" is the verb right

verbs
thank you!

verbs
thanks you!

verbs
A signed warned drivers about falling rocks along the street. in this sentence would the only verb be warned because falling is an adj describing rocks

High School Science
A ray of light goes from water (nwater=1.333) into ice (nice=1.309). Which of the following statements is true? 1) The ray gets closer to the normal after crossing the interface. 2) The ray does not change directions after crossing the interface. 3)The ray gets farther away fr...

8th grade science
What is radiation?

biology
Why might it be worse to get an infection from someone in the hospital than from someone on a bus? is it because how bad the infection is, usually people that are in the hospital are in bad condition

4th grade math
Thank you Ms. Sue!

4th grade math
Judy and Ramey together have 42 stuffed animals. Judy has 12 fewer animals than Ramey. How many stuffed animals does each girl have? I know that the answer is Ramey has 27 and Judy has 12 but I don't know how to write the equation for solving it. I figured out the answer b...

Washroom Fix Urgent
what causes water to leak after you've replaced the wax ring on the toilet?

Learning
can anyone give me a site from which I can learn educational things, it can be game types of sites, I don't mind that as long as it isn't boring

Jokes
I am in need for a funny joke which I need to add in my skit. Please give me your ideas, and with them I will try to make mine, thanks:-)

Games
yes that was actually my sister who needed to know if webkinz is safe, as she is younger than me, and yeah we do have an antivirus progam

Games
my sister need that answer

Games
thanks

math
what is the constant variation 3.2x+3y=6 4.3x-1=7y-1 write each lineat equation in slope intercepy form 1.x=-2y-7 solve the equation 1.x-15=27

10th grade math
solve each equation for y. do x and y vary directly? if so indentify the constant of variation. 1.4x=5y 2.2x+3y=6

5th grade math
how you Magnitude Estimates

language
Nephthys

biology
under what condtions is a hypothesis supported

PLEASE HELP SOLVE RIDDLE
ok your dead and in a room and theirs a door to heaven and a door to hell and you dont know which is which and theres two twins in the room and one always lies and one always tells the truth and you can only ask one question and you dont know which twin is which HELP ME PLZZ

thesis statement
need a hook + thesis statement for a paper on psychoanalysis Psychoanalysis is a really broad subject. Narrow the subject considerably, and then worry about thesis. As it is, you could write a very, very large book and not finish the subject.

Pages: 1

Search
Members