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Questions Answered

chemENGINEER:
Group Title
SIMPLE DIFF EQ
 updated 2 months ago
 3 replies
 No Medals Yet
Mathematics

exytictac:
Group Title
At the triplepoint of a phase diagram, the substance is in equilibrium and exists in all three phases, solid, liquid, and gas.
True or fal…
 updated 4 months ago
 1 reply
 2 Medals
Mathematics

Leilani1:
Group Title
is coke used to manufacture steel
 updated 6 months ago
 4 replies
 1 Medal
Mathematics

JadoreToussaint:
Group Title
If the temperature of a substance increases, what can you conclude about the value of q?
A must be less than 1
…
 updated 5 months ago
 2 replies
 No Medals Yet
Mathematics

zachtyzon:
Group Title
How many combinations of a president, vicepresident, secretary, and treasurer can be chosen from a group of 12 students?
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

erinnn20:
Group Title
Do I use q=mc delta T? What is c?
Calculate the heat (in joules) absorbed by the solution in reaction MgO + 2HCl> H20 + MgCl2.
…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

rgermina5873:
Group Title
Heptane (C7H16) and octane (C8H18) are constitutents of gasoline. At 80 degree celsius, the vapor pressure of heptane is 428mmHg and the vap…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

val0512:
Group Title
why is cholesterol more soluble in organic solvents and not soluble in water?
 updated one year ago
 2 replies
 1 Medal
Mathematics

AngelCriner:
Group Title
Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g)
Use the following:
…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

AngelCriner:
Group Title
The enthalpy of a system is the same as its:
A. specific heat.
…
 updated one year ago
 4 replies
 2 Medals
Mathematics

miszery:
Group Title
Help Please!!
A block of brass of mass 500 gram and temperature 100C is placed in 300 grams of water at 20C which is in an aluminium cal…
 updated one year ago
 31 replies
 1 Medal
Mathematics

Rea_731:
Group Title
Please help?
Graham's gas law of diffusion:of the three gases H2 , CH4, C3H8 which would you expect to diffuse faster?
…
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

juciystar234:
Group Title
Best Response Given Plus Fan.!!
…
 updated one year ago
 12 replies
 2 Medals
Mathematics

thewinterfawn:
Group Title
If the magnitude of F1 is greater than the magnitude of F2, then the box is
A) accelerating in the direction of F1
B) moving at constant s…
 updated one year ago
 2 replies
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Mathematics

dance36596:
Group Title
Diatomic molecules will be nonpolar when a pair of shared electrons is located closer to one atom than the other. True or False?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

djellza:
Group Title
what's the IUPAC name CH2=CHCH2CH2CH2CH3
CH3C=CHCH2CH3

…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

cwright150:
Group Title
Ammonia gas is formed from nitrogen gas and hydrogen gas, according to the following equation, N2 (g) + 3H2 (g) arrow 2NH3 (g). If 140 grams…
 updated one year ago
 2 replies
 1 Medal
Mathematics

GavinxFiasco:
Group Title
True or False Statements for Rigid Bodies
 updated one year ago
 14 replies
 1 Medal
Mathematics

smileyylove:
Group Title
anybody in physical science in ca?
 updated one year ago
 5 replies
 1 Medal
Mathematics

copheeaddikt:
Group Title
What is the rate of flow of water from a 1.85 cm diameter faucet if the pressure head is 15.0 m?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

emilygoetz10:
Group Title
A researcher studying the nutritional value of a new candy places a 3.00gram sample of the candy inside a bomb calorimeter and combusts it …
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

Blakeg1998:
Group Title
1)Which conditions will result in the smallest change in momentum?
A)a large force over a long time period
B)a large force over a short…
 updated one year ago
 9 replies
 No Medals Yet
Mathematics

Jacobbenvenutty:
Group Title
This isnt realy a homework question. Im just trying to fufill my curiosity.
How do we know what angle the Earth or any planet is tilted a…
 updated one year ago
 6 replies
 2 Medals
Mathematics

GavinxFiasco:
Group Title
The roller has a mass of 42 kg and a diameter of 1.24 m. The height of the step is h = 0.16 m. Calculate the minimum force P required to p…
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

kym02:
Group Title
Title: To measure the resistance by the ammetervoltmeter method.
1) what is an appropriate hypothesis for this?
Thanks :)
 updated one year ago
 5 replies
 1 Medal
Mathematics

butterflyprincess:
Group Title
What is the derivative of f(x)=xe^(5x)
 updated one year ago
 18 replies
 2 Medals
Mathematics

ashlynnwilson8:
Group Title
Suppose you have a mean standardized score of 1200 points with a standard deviation of 200 points.
This data is normally distributed. What …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

jasmiemarie:
Group Title
Describe how you would make 100 mL of a hydroiodic acid solution that has a PH of 2.5
 updated one year ago
 1 reply
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Mathematics

NotTim:
Group Title
A solid hydrate weighing 2.682 g was heated to drive off the water. a solid anhydrous residue remained, which weighed 1.420g. Calculate the …
 updated one year ago
 2 replies
 2 Medals
Mathematics

chemENGINEER:
Group Title
A Prof. gave us an upcoming Heat Transfer exam ahead of time, but with some blanks on the exam. Here it is....
 updated one year ago
 4 replies
 No Medals Yet
Mathematics
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