irkiz
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 Currently taking a degree in Chemical Engineering
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Questions Answered

Ro_05:
Group Title
Steve purchased $61.50 worth of supplies for a hiking trip. The supplies included flashlights for $3.50 each, compasses for $1.50 each, and …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

orangekilller:
Group Title
In an endothermic chemical reaction, the energy lost from the surroundings must be _________ the energy gained by the reaction. A) equal to …
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

golfergirl93:
Group Title
Can someone please explain this to me:
If the system:
CaCO3(s)<>CaO(s)+CO2(g)
…
 updated one year ago
 3 replies
 3 Medals
Mathematics

hammytams:
Group Title
titration calculation help please!!!!
a solution is made up by dissolving 5.00g of impure sodium hydroxide in water and making it up to 1…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

motlatsi:
Group Title
integrate (x  x³)
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

mattishot:
Group Title
A circle has a radius with endpoints at (2, 5) and (1, 4). Find the circumference of the circle.
 updated one year ago
 5 replies
 1 Medal
Mathematics

M_Vamshi_Kumar_Reddy:
Group Title
is there any formulae including: FORCE, MOVEMENTUM AND SPEED.
 updated one year ago
 2 replies
 1 Medal
Mathematics

oohnaw:
Group Title
In parallelogram DEFG, DH = x + 3, HF = 3y, GH = 3x – 3, and HE = 5y + 4. Find the values of x and y.
…
 updated one year ago
 31 replies
 1 Medal
Mathematics

grandma111:
Group Title
In Gullivers travels by johnathan swift, gulliver went to the kingdom of Lilliput where he found that he was 12 time the height of the avera…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

Kamille:
Group Title
hello, I need to find x
 updated one year ago
 19 replies
 3 Medals
Mathematics

msingh:
Group Title
what does it mean
3 whole 22 by 3
 updated one year ago
 4 replies
 1 Medal
Mathematics

jnwadiozor:
Group Title
An industrial manufacturer wants to convert 175 kg of methane into HCN. Calculate the masses of ammonia and molecular oxygen required for th…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

Joachim:
Group Title
I really need some help with this question:
"Two runners start simultaneously from the same point on a circular 200 m
…
 updated one year ago
 2 replies
 1 Medal
Mathematics

RH:
Group Title
Could anyone tell me if B is the correct answer?
 updated one year ago
 12 replies
 1 Medal
Mathematics

RH:
Group Title
Please HELP!
 updated one year ago
 9 replies
 1 Medal
Mathematics

jovis2009:
Group Title
Given f (x) = cos^2 (x) what is the correct expansion for the first derivative of f (x)
from first principals:
 updated one year ago
 7 replies
 1 Medal
Mathematics

jiehanthelearner:
Group Title
one kilocalorie is equal to...
…
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

joshuaknmcguire:
Group Title
Where does the graph of the function intersect its asymptote?
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

sarahc:
Group Title
Explain what each quantum number in a quantum number set tells you about the electron. Compare and contrast the locations and properties of …
 updated one year ago
 8 replies
 2 Medals
Mathematics

anabieber:
Group Title
Cobalt53 (Co) is unusual because it decays by emitting a proton. What is the resulting element that remains after cobalt has undergone thi…
 updated 2 years ago
 7 replies
 No Medals Yet
Mathematics

FollowTheFez:
Group Title
How do you convert various units uses prefixes (10^3 etc)??
Physics teacher gave example of 40km/k to m/s with working as 40(10^3m) x 1/…
 updated 2 years ago
 6 replies
 No Medals Yet
Mathematics

KandyseR:
Group Title
PLEASE HELP.
Consider the following reaction: P2O5(s)+3H2O(l)<>2H3PO4(aq)
a. Write the expression for Kc for the reaction.
…
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

Vane11:
Group Title
What ion does an Oxygen atom form? Why? Draw in the electrons for the deionized and ionized Oxygen atom. Find the Nuclide symbol for both.
…
 updated 2 years ago
 14 replies
 No Medals Yet
Mathematics

barnoldwrl:
Group Title
Find the value of x. Round to nearest tenth.
 updated 2 years ago
 14 replies
 1 Medal
Mathematics

anabieber:
Group Title
What are the coefficients used to balance the following equation, AlCl3 + Ca > CaCl2 + Al.
 updated 2 years ago
 21 replies
 No Medals Yet
Mathematics

dstanton97:
Group Title
Which of the following is not an example of a science?
 updated 2 years ago
 5 replies
 1 Medal
Mathematics

radhaganti:
Group Title
I've had problems understanding situations involving the mixture of substances that are already in a ratio. I can't work with two or more ra…
 updated 2 years ago
 13 replies
 2 Medals
Mathematics

zonazoo:
Group Title
An object is in simple harmonic motion. Find an equation for the motion given that the period is pi/4 and, at time t=o, y=1, y'=0. What is…
 updated 2 years ago
 22 replies
 1 Medal
Mathematics

kayble:
Group Title
a 0.0500 g mixture of Cu2O and CuO contains 0.425 g Cu. What is the mass of CuO in the mixture?
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

berrypicking:
Group Title
I need to solve using matrices. x+2y=9 and x+y=1. I know x=7 and y=8.
 updated 2 years ago
 8 replies
 No Medals Yet
Mathematics
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