At 25 oC a researcher measures the pH of a solution, an image of the pH meter is shown below determine the correct statement regarding the solution. 

HEPES buffer (C8H18N2O4S) in used for cell cultures. A researcher needs 0.0100 M of HEPES. What mass of HEPES in grams would be needed to produce 320.0 mL of solution. 

Two different ionic compounds were added to seperate flasks of water.  The resulting solutions are shown below.  What are the potential ionic compounds?  The ionic compound added to solution A could be [a] The ionic compound added to solution B could be [b]  

What is the sum of coefficients when the neutralization reaction occurs between chloric acid (HClO3) and calcium hydroxide (Ca(OH)2)? 

The following reaction is used to produce copper metal:

HEPES buffer (C8H18N2O4S) in used for cell cultures. A researcher needs 0.0200 M of HEPES. What mass of HEPES in grams would be needed to produce 280.0 mL of solution. 

What is the sum of coefficients when the neutralization reaction occurs between perchloric acid (HClO4) and magnesium hydroxide (Mg(OH)2)? 

Determine if the following reactions are redox reaction or not.  Au(s) + O2(g)

What is the sum of the coefficients when the following equation is correctly balanced? 

Determine if the following reactions are redox reaction or not.  2C2H6(g) + 7O2(g)