# Posts by Rikki

Total # Posts: 25

**Chemistry**

Identify the following chemical equations by type. 1. If an electric discharge produces 800 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 75.0 dm3 of O2 react with an excess of glucose (C6H12O2), according to the reaction below, ...

*September 30, 2014*

**Physics**

a) 500J b) 500J c) 500J d) 1:2

*December 9, 2012*

**physics**

A stationary mass of 10 kg disintegrates explosively, with the evolution of 4.2*10^5 J, into three parts, two having equal masses of 3 kg. These two masses move at right angles to each other. Calculate the speed of the third part.

*January 16, 2012*

**maths**

Solve the following differential equation: (1 + x)*(dy/dx) = y where y is a funtion of X solve by the following: A)series expansion B) elemantary method please show working

*November 29, 2011*

**differential equations**

Consider the 2nd order differential equation: x''(t)=-x-A(x^2-1)x'(t) x(0)= 0.5 x'0)= 0 ''= 2nd order,'= 1st order where A is a positive constant.As the value of A increases this equation becomes increasingly stiff. Convert this equation to two ...

*November 16, 2011*

**mathematics integration**

Perform a change of variable and integrate the following elliptical integral I = Square root [(1-x^2)*(2-x)] limits lower,-1 and upper +1 could you show working

*November 2, 2011*

**Algebra**

what is radical 72 expressed in simpilest radical form

*June 1, 2010*

**english 4**

I know I'm 6 years late... But the answer is "The audience knows that Antigone has buried him for religious, not political, reasons."

*February 1, 2010*

**Math**

2.3 litres is equal to how much millilitre.

*October 14, 2008*

**Math**

The homework is not mine...I am helping my 7 year old Niece to do her Math homework and just wanted to double check by getting a second opinion that the answer that we had both worked out is correct. I was not expecting anyone to do her homework...that would defeat the whole ...

*October 14, 2008*

**Math**

Share £2.oo exactly amongst 8 children, how much would each of them get.

*October 14, 2008*

**Math**

Find the cost of 100g of rice at 95p per Kilogram.

*October 14, 2008*

**Math**

Find the total of 3.7, 1.7, 0.8

*October 14, 2008*

**MATH**

How many grams are there in 2 1/4 Kilograms?

*October 4, 2008*

**MATH**

What is the average of 6cm, 9cm, 7cm and 10cm?

*October 4, 2008*

**MATH**

Please may I have the cost of 500g, thank you.

*October 4, 2008*

**MATH**

The price of fish is £6.40 per kilogram, what is the cost of 1 kilogram (500g)?

*October 4, 2008*

**MATH**

A train leaves at 17:50 at arrives at midnight, how long does the journey takes in hours and minutes?

*October 4, 2008*

**math**

a plank of wood is cut into 12 equal pieces what fraction of the plank is 7 pieces

*October 2, 2008*

**bunissess**

Wow people can be rude. I am in the same class - this student wants help on understanding each example not the answer. Our reading that is provided with us is not exactly what I would call clear explanations of each. It is just a lot of mumbo jumbo - Layman's terms is what...

*September 16, 2008*

**Business**

wow... if this site isn;t a bunch of bs I don't know what is. "let me teach you on how to search the web" Yes... cause that might help with this question about BUSINESS - if you don;t know the answer or how to help just say you don;t know how to help.

*August 7, 2008*

**mathematics**

deduce the completed square form for the following 2x^2+16x-10

*June 6, 2008*

**History**

What exactly is "The Vietnam Syndrome" ? Thakns

*October 24, 2007*

**Math**

lim at x approaches negative infinity (sin^2x+cos^2x)

*September 23, 2007*

**chemistry**

write a balanced chemical equation for the reaction of aluminium selenide with water (to include physical states of reactants and products)to include brief decription of the strategy used and the sequence of partially balanced equations needed to reach final fully balaced ...

*January 30, 2007*

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