# Posts by arya

Total # Posts: 51

Chemistry
How many (a) calcium ions and how many (b) nitride ions are there in 1.00 mol Ca3N2?

Chemistry
What is the pH of a solution obtained by adding 15 g deK2SO4em 150 ml NaHSO4 with Molarity of 0, 2 m. HSO4 Ka = 1, 3.10^-2

physics
A uniform chain 10m long and weighing 6 kg permetre hangs vertically.calculate the work required to wind it up.. Plzz solve it

Chemistry
What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees C?

Analytic Geometry/Calculus
I forgot to mention the point is (2,1,2) and it's perpendicular to n=i

Analytic Geometry/Calculus
We didn't go over the perpendicular form in class, only the parallel. Find the general form of the equation of the plane passing through the point and perpendicular to the specified vector or line.

Physics
You are standing at the top of a deep, vertical cave and want to determine the depth of the cave. Unfortunately, all you have is a rock and a stopwatch. You drop the rock into the cave and measure the time that passes until you hear the rock hitting the floor of the cave far ...

12th physics
for what angle of incidence the lateral shift produced by parallel sided glass plate is (i) zero (ii) maximum

algebra
9 876 543 120

Continue with abc formula so x = -9 + sqrt257 / 8 or x = -9 + sqrt257 / 8

Calculus
First separate it into 3 ⌠ 2⌡(2x^2/x^2) dx + 3 ⌠ 2⌡ 5x^-2 dx = ........ I'm sure you can continue the process. The answer is 17/6

geometry
use phytagoras we get the other side is 33

Trig
Use Lemma sin m + sin n = 2sin(m+n/2)cos(m-n/2) cos m + cos n = 2cos(m+n/2)cos(m-n/2) We get (sin m +sin n)/cos m + cos n) = sin(m+n/2)/cos(m+n/2) = tan m+n/2)

Math
Um... I think its 60* ... I think if not, sorry 360*/6=60*

science
Jeez, sorry.... either way it'd still have to do with the pull of the moon(s) and planet

science
Do you mean why are the planets' moons cloeser to their respective planets? Because of the respective planet's gravity pull...

math
Isn't there some distance formula...?

math
Line AB is the diameter of circle C. If the endpoints of the diameter are A(3, -4) and B(-2, 5), what are the coordinates of the center of the circle C? I've forgotten how to do this, heh heh... help please?

Algebra
Okay, so your basic equation for perimeter is P= 2l + 2w So if your l=4w, then you're just going to substitute your values-> P=2(4w)+ 2w Hope this helps XD

Find out about crops-cereals,vegetables,pulses-that are grown in kasargod.Of those,is there anything that is famous across the country?

environmental studies
Find out about the crops-cereals,vegetables,pulses-that are grown in your area.Of those, is there anything that is famous across the country?

activity-let's make a papier-mache bowl material required 1)a plastic bowl 2)sheets of newspaper torn into bits 3)a small tub of water 4)glue 5)oil paint 6)a brush to paint with procedure Tear the paper into 1"-1/2 size bits-unevenly.Soak them in water overnight. ...

science
how do you find the percent error betwwen an experimental value and the accepted value? (of density) thanks

Middle school Grammar
Then vs. Than Then is used as a time expression. Examples: I'll see you then. I'll be at the party. We can speak then. Note: It is not used in the form "different than" which is used for comparisons. Than is used for comparisons. Examples: He's lived here...

much of....M? What's that supposed to be?

chemistry
gracias

chemistry
ummm okay... how about, what's the precision of a centigram balance and metric ruler?

chemistry
What is the precision of lab equipment? More importantly, how do you find it?

prefixs
bi=two non=like no or none semi=half

math
i suck at domain and range.... this doesn't make any sense... a. Given the relation {(-3,-2)(-1,0)(2,-1)(3,5)}, explain why the domain would NOT be -3 <or less than x <or less than 3(-3 <_ x <_ 3) and similarly the range would NOT be -2 <or less than y <...

math
Explain how you would determine wether each of the following represents a function: Set of ordered pairs- Mapping diagram- Graph-

math
what new one? and i don't know how to draw(graph?) an ellipse... oh and thank you Reiny.

math
If you switch the domain and range of any function, will the resulting relation always be a function? Explain your answer with examples.

spanish
look up studyspanish on google. it won't let me post websites...

math algerbra 2
blah this is making no sense, please help me: If you switch the domain and range of any function, will the resulting relation always be a function? Explain your answer with examples.

social studies
oh where'd the question go...?

social studies
what the...? I have no idea, maybe 'hysical' is supposed to be 'physical'? No se....

math- last time then i'm giving up
i'll try... arigato, sorry for all the trouble

math- last time then i'm giving up
im sorry but this problem is part of a major grade i have in my pre-ap algerbrea 2 class.... ummm... okay lxl <--these are going to be absolute value bars. 1. Solve lax+bl <or equal to c for x in terms of a, b, and c where a>0 and c>0 2. Now solve lax+bl >or ...

when in the absolute value of x equal to the absolute value of negative x? (always right?) negative sign is inside absolute value bars when is the absolute value of x equal to negative absolute value? (never?) negative sign is outside absolute value bars

math
no problem

math
1. A 2. Add all the side measurements together.

algebra
-4x+28 4x=28 4x/4=28/4 x=7

ummm... okay l l <--these are going to be absolute value bars. 1. Solve lax+bl <or equal to c for x in terms of a, b, and c where a>0 and c>0 2. Now solve lax+bl >or equal to c for x in terms of a, b, and c where a>0 and c>0 this help?

How do I solve this: The absolute value of ax+b is less than or equal to c for the terms of x in terms of a, b, and c where a>0 and c>0 -Then they ask: The absolute value of ax+b is more than or equal to c for the terms of x in terms of a, b, and c where a>0 and c>...

math
thanks-

math
How do I use the quotient of powers property to show that zero to the zero power is undefined?

math
how am i supposed to use the quotient of powers property to show that zero to the zero power is undefined?

Biology
diffusion...?

Essay on UNITED WE STAND, DIVIDED WE FALL
in my view the phrase united we stand devided we fall refers to the message thatif we all in this world are unied with each other no one even god can harm us but if in the other side we are divided its really easy to harm us all that's why its said in a story that if there...

Essay on UNITED WE STAND, DIVIDED WE FALL
in my view the phrase united we stand devided we fall refers to the message thatif we all in this world are unied with each other no one even god can harm us but i

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