- 6 AnswersMartial Arts7 years ago
Anyone know?2 AnswersMartial Arts7 years ago
So I'm doing this assignment on the mandatory reporting of child abuse right.
And one of the criteria is the pros and cons of it. What do you guys think are pros and cons of mandatory reporting of child abuse?7 AnswersLaw & Ethics9 years ago
Okay so I have this little problem with my dumbells.
My uncle was using them and one side of the dumbell is locked on SUPER tight. I can't spin the thingy around to remove it, it won't even budge. :S and he's not here anymore.
Any ideas on how to remove the weight on this one side of the dumbell?1 AnswerDiet & Fitness9 years ago
dT/dt = -k (T-Ts) + P
The temperature inside the engine of John's car is 65°C at 6pm, when he turns the engine off, and the outside temp, Ts = 20°C, from 6pm to 6am the next morning. At 9pm the temp inside the engine dropped to 33°C. Assume Ts is constant from 6pm to 6am the following morning.
Show that temperature is T = 20 + 45e^-0.4t1 AnswerMathematics9 years ago
I need some help with these questions :\
Write half equations for the reaction occuring in each half-cell and hence write an overall equation for the reaction in each cell.
a) Fe3+/Fe2+ and Zn2+/Zn
anode reaction, cathode reaction, overall reaction
-Consider the Pb2+/Pb half-cell. If lead is a stronger reductant than copper, but Pb2+(aq) is a stronger oxidant than Zn2+ (aq), where in your electrochemical series would you place the following equation?
Pb2+ (aq) + 2e- -> Pb(s)1 AnswerChemistry9 years ago
1) Some proteins, such as those that make up hair and wool, adopt helical structures. Explain how this helical arrangement is maintained.
2) How can the identification of proteins present in a person be used to identify and potentially treat disease?
Also, is the general name of the molecules that form the basic unit of proteins Amino Acids? if so, what is the general structure for them and the functional groups in them? *checking a question to see if I'm right lol2 AnswersChemistry9 years ago
I need help >.<3 AnswersHistory9 years ago
Okay so I just finished year 11 and next year I'm going to be in year 12 where I get my ATAR score.
Once I hit the big ATAR score I'll probably go overseas to Japan by myself for a break. And I got a few questions:
1) Is Tokyo/Japan easy to navigate? How would I get around to places I wanna go? like say a shopping mall, a tourist place, etc.
2) Is the language barrier a big problem? I don't speak Japanese.
3) Is it easy to get lost there?5 AnswersJapan10 years ago
Potassium iodide and lead (II) nitrate solutions react together to form a precipitate of lead lead (II) iodide according to the equation:
2KI (aq) + Pb(NO3)2 (aq) -> PbI2 (s) + 2KNO3 (aq)
a) in each of the following cases determine which of the two reactants is in excess and by what amount (in mol):
i) 1.0 mol of potassium iodide and 1.0 mol of lead (ii) nitrate
ii) 0.50mol of potassium iodide and 2.0 mol of lead (ii) nitrate
In each of the following cases, calculate the mass of the precipitate formed.
iii) 1.0g of lead (ii) nitrate and 1.0g of potassium iodide
iv) 0.60g of lead(ii) nitrate and 2.6g of potassium iodide1 AnswerChemistry10 years ago
The refractive index for glass is 1.50. A beam of light strikes a glass boundary at a angle of 40 degrees as shown on the following diagram:
a) what is the angle of incidence?
b) what is the value of the ratio sin pheta i over sin pheta r for light passing from air into glass?
c) Light passes from air into glass with an angle of incidence of 75 degrees. Use Snells Law to calculate the angle of refraction.1 AnswerPhysics10 years ago
My body is a little bit on the chubby side, but I'm not overweight.2 AnswersDiet & Fitness10 years ago
Alright, I have an assignment on the principles of green chemistry.
I am doing principle #4.
I have to find out how this principle is supported in 3 different industries and an explanation of the chemicals or chemical processes relevant to it.
I can't find this info anywhere :(1 AnswerChemistry1 decade ago
-A standard solution of Sodium Carbonate was prepared by dissolving 1.80g in 250mL of deionised water.
Calculate the molar concentration (M) of the standard solution (use Na = 23.0, C = 12.0, O = 16.0). Show all working and formulae used.
-20mL aliquots of the standard solution were taken and titrated against HCl solution using methyl orange indicator. The mean titre was 27.17mL of hydrochloric acid.
use the information to calculate the molar concentration (mol L^-1, M) of the hydrochloric acid.2 AnswersChemistry1 decade ago