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The reason why is because I did not study at all because I want to drop it.

Caclualte the mass of magnesium oxide formed when 10g of magnesium burns in excess oxygen. Now the balanced equation is 2Mg+02 ----- 2MgO Now n= 10/24.31 = 0411 m= 0.411 x ( 24.31+24.31+32) = 33.16 Why does my book divide 0.411 by 2 if the mol ratio is 1:1. Last question...

Anyone Who Did The Physics Exam I Think Their Was A Mistake. It Said The Exam Was Out Of 100 And Extended Response Was Worth 75 Marks, But Their Were Only 15 Multiple Choice. I Think It Was Out Of 90 Not 100. Can Anyoe Confirm This Im Talking About The One With The Sneels Law Thing Worth 5...

Hi A truck is travelling at a speed 20ms East a car is travelling at a speed of 30ms an observer in the truck reckons the speed of the car is more then 30ms, Explain why this is with reference to velocity of the car relative to speed of the truck.

Now This prac the only thing I remember is the one were we have the heat wire that heats up in its plastice container which heats up the water. Is that the right prac?

If a positive coulomb of 1 charge (or something) was placed next to a positive coulomb of 2 charges (or something) (it was +1 and +2 though) Draw the electric field around them and the null point

So. Any questions on alpha particles gamma particles and beta particles? Any questions on any pracs we have done throughout the year? Post any questions you remember? Help me and ill help you. and by independent I mean the one were the school buys it from some company...

hi 7.3 x 10^19 electrons passed through a certain point in 4 mins. Calculate the charge. If a positive coulomb of 1 charge (or something) was placed next to a positive coulomb of 2 charges (or something) (it was +1 and +2 though) Draw the electric field around them and the null point

Topic. How about respirtation?

Problem Angle of Incidence is 40 calculate the angle of refraction. Light enters perspex from air. Refractive index of perspex= 1.46 light = 1 Velocity of perspex in medium = 2 x 10^8 light = 3 x 10^8 Using snells law Sin40/Sinr=3x10^8/2x10^8 Sinr= 2x10^8xSin40/3x10^8 = 0.4285...

List all types of questions/topics were a protractor is needed. thanks.

I have taken around 20 something.

Omg Had Math Test Today Did The Stupid Mistake, I Solved The Simultaneous Eqautions Wrong, Now I Failed I Needed Those 2 Marks. Omg So Angry Heart Racing. What Do I Do?

How much energy would be used by a 100W globe and 50W fan operating non stop for 2 days? Show working please. Calculate the mass of silver formed by the thermal decomposition of Silver Oxide. 5.00g of Silver Oxide was decomposed. THANKS SHOW ALL WORKING PLEASE.

Hi I currently do Math, Ex 1 math, Chem , Bio abd Phys my marks in Ex1 have not been that good 49% avg then a 40% result, do you guys think that I should drop Ex1 for the beginning of next term or keep it and just do it so it goes on the HSC. Im also worried because I know my school is going to...

Calculate the resistance of a 100W light globe connected to a mains voltage of 240v Calculate the energy consumption in kilowatt-hours if the 100w globe is on for 10minutes. PLEASE SHOW ALL WORKING. Thanks How much energy will a 400w hair dryer consume if it is used constantly for 5 min...

Calculate the resistance of a 100W light globe connected to a mains voltage of 240v Calculate the energy consumption in kilowatt-hours if the 100w globe is on for 10minutes. PLEASE SHOW ALL WORKING. Thanks

A parabola has equation 4y= x^2+4x+8 How can I rearrange it in the form (x-h)^2=4a(y-k) can please show the steps. I also need to know how to complete the sqaures and in what situations in locus will I need to use complete the square ( what type of question) thanks.

I have not studied at all, see I had assignments for physics chemistry bio and english, then I got a really bad flu I could not stand up because I had dizzy feeling, had very high temp and began to hallucinate I only slept for one hour and have not gone to school since last friday and the...