Algebra
How do you graph the equation of -1.2x + 2y= -4 and y = 0.6x + 8
algebra
how do you do the linear equation y + 9 =1/5x and 45 - 3y = 15x
algebra
the line "l" passes through the point P=(1,-1,1) and has a direction vector d=[2,3,-1], for the following plane Pl, determine whether l and P is parallel, perpendicular, or neither. a) 2x + 3y - z = 1 could you tell me also how it would differ if it was parallel or n...
chemistry
I'm assuming mass? I'm not sure.
chemistry
Pure acetylsalicylic acid has a melting point of 135.0 - 135.5 (degrees Celsius). What would you expect for the melting point is this was mixed as a 50:50 mixture with pure benzoic acid (melting point 121 - 122)? Explain.
chemistry - buffers
what mass of sodium acetate should be dissolved in 1.00L of acetic acid, 0.150M concentration, in order to produce a buffer with pH = 4.5?. Ka of CH3COOH = 1.8x10^-5
buffers
thanks a lot :D
buffers
thanks. so for this question is the pH 3.70?
buffers
we havn't learnt that equation.
buffers
9.00mL of 1.10M CH3COOH and 1.00mL of 0.900M CH3COO- what is the pH?
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