What is the concentration of lithium ions in 0.105 M Li₂HPO₄?

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

What is the distance between the points 4,10 and -3,-14 on the coordinate plane