Which statement is true about a catalyst?

A) It decreases the rate of a reaction.

B) It remains unused during the reaction.

C) It reduces the collisions between reactants.

D) It changes the final products of the reaction.

How many moles of Na3PO4 are in 820. grams of it? a. 3 b. 4 c. 5 d. 6 e. 8

Solution (A) contains 0.01 M of NH4Cl; solution (B) contains 0.01 M of NaCl; Solution (C) contains 0.01 M of NaOH; andSolution (D) contains 0.01 M of Ba (OH) 2. Arrange the pHof the solutions in an increasing order.

What what is any harm to the physical chemical or biological health of the ocean ecosystem

If a 3.6 moles of an ideal gas occupies 150 mL tank at a temperature of - 5 °C, what is the pressure inside the tank?

Which of the following is not a mineral? a. Coal b. Solid ice c. Natural diamond d. Gold

True or False? The fatal 1930 incident in Muese Valley, Belgium, was associated with leakage of toxic chemicals from a former dump site.

How many moles of neon (Ne, 20.179 g/mol) are in 68.4 grams of neon

A 50.00 mL sample of groundwater is titrated with 0.0300 M EDTA. Of 12.40 mL of EDTA is required to titrate the 50.00 mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO 3 by mass

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.