The steel used to make structural beams in buildings is a mixture. What category best describes this type of mixture?

heterogeneous mixture

colloid

suspension

solution

Which substance is needed in order for this biochemical reaction to occur?

Describe the redox reaction. Check all that apply. Upper A l (s) plus 3 upper Z n upper C l subscript 2 (g) right arrow 3 upper Z n (s) plus 2 upper A l upper C l subscript 3 (a q). Aluminum atoms transfer electrons to chlorine atoms.

In the decomposition potassium nitride, 10.65 g of nitrogen form. How much potassium nitride was present initially? Explain.

Briefly describe how a potentiometric pHmeter works. (Hint: Describe how the pH meter measures the amount of H + or OH - ions in a sample)

Which of the following element combinations will likely form monatomic ions not polyatomic ions? 1. Argon and krypton 2. Potassium and iodine 3. Carbon and nitrogen 4. Oxygen and nitrogen

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the H + (aq) ion.

Toussaint L' ouveeture lead a revolt that eventually resulted in Independence for

If a solution contains 1 x 106 hb molecules, how many o2 binding sites are available? if the solution of hb is 50% saturated with o2, how many binding sites are occupied by o2?

A. what are isotopes? b. how are the isotopes of a particular element alike? c. how are they different?

The line of longitude used as the origin in a system of coordinates