For the following measurements, 27.5 x 0.125 x 13 = 44.6875, choose the answer that is rounded to the correct number of significant figures.

A-40

B-45

C-44.7

D-44.69

What is the concentration of the base (naoh) in this titration? select one of the options below as your answer: a. 0.88 m b. 0.47 m c. 0.48 m d. 0.97 m

What would the concentration be of a solution made bydissolving 5 moles of NaOH in enough water to make 2 liters ofsolution.

How does the periodic table arrange the elements? A. in alphabetical order B. by chemical properties C. by the date they were discovered D. by how common they are on Earth

Which carbonate is most stable to heat? A. Sodium carbonate B. Copper (ii) carbonate C. Zinc carbonate

Identify the items in the list below that are examples of matter. Check all that apply

We are all familiar with the general principles of operation of an internal combustion engine: the combustion of fuel drives out the piston.

A first order reaction has a rate constant of 0.816 at 25 oC. Given that the activation energy is 22.7 kJ/mol, calculate the rate constant at 34 oC. (enter answer to 3 decimal places)

Part b select the ester that is formed when propanoic acid reacts with isopropyl alcohol in the presence of heat and an acid catalyst.

Do metals form anions or cations

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon