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Posts by Randolph

Total # Posts: 8

Math
How much water do i need to mix with potassium chloride to make 30 cc

Math
Explain what each of the following expressions means. Evaluate each expression for x = 0.5. Some of these may be asking for inverse and not raising to exponent of -1. Enter the exact value for angles, and round any values to three decimal places. sin^-1 x = ? sin(x^-1) = ? (...

Chemistry
Using VSEPR what is the shape of ammonia (NH3) and water (H2O) when bonded to a hydrogen bond?

chemistry!!
Compute the amount of heat released (absolute value) when 1.1 kg of liquid ethanol is burned in excess oxygen to make carbon dioxide and liquid water

Trigonometry
verify the identity: (sin^3x-cos^3x)/(sinx-cosx)=1+sinxcosx

Trigonometry
verify the identity: (1-cosx)(1+cosx)= sin^2 x

Trigonometry
solve: tan x/2= sqrt3/ 3

geometery
What shape has perperndular line segments?

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