Which element is a metalloid?

a. argon (ar)

b. silicon (si)

c. potassium (k)

d. magnesium (mg) ?

Structural isomers are chemical compounds that have A) the same atoms that are arranged in different orders. B) the same atoms that are arranged in the same order.

In general, what is used to separate mixtures?

A box has dimensions of 14 inches long, 1.5 feet wide, and 7 inches high. What is the volume of the box? The formula for the volume is V = l ⋅ w ⋅ h.

The decomposition of in solution in carbon tetrachloride is a first-order reaction: The rate constant at a given temperature is found to be. If the initial concentration of is 0.200 M, what is its concentration after exactly 10 minutes have passed?

Calculate the work for each of the following processes beginning with a gas sample in a piston assembly with T 5 305 K, P 5 1.79 atm, and V 5 4.29 L: (a) irreversible expansion against a constant external pressure of 1.00 atm to a final volume of 6.

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.

What is the new concentration, after diluting 300 mL of a 1.5 M LiCl solution to 1L

The answer that he gave was wrong

In which orbital does an electron in a bromine atom experience the smallest?