Which of the following is a characteristic of nonmetals?

a. nonmetals are often shiny and hard.

b. nonmetals are often malleable.

c. Nonmetals do not conduct electricity.

d. nonmetals are often ductile.

There is only one compound that is named 1,2-diiodoethane, but there are two distinct compounds that can be named 1,2-diiodoethene. Why? Because 1,2-diiodoethane has more hydrogen atoms.

An organic compound is classified as aromatic if it cyclic and has a fragrant odor true or false

The reaction described by H2 (g) + I2 (g) ⟶2HI (g) has an experimentally determined rate law of rate=k[H2][I2] Some proposed mechanisms for this reaction are: Mechanism A (1) H2 (g) + I2 (g) - →k12HI (g) (one-step reaction) Mechanism B (1) I2 (g) ⥫⥬=

Which statement correctly compares DNA and RNA? DNA is made up of a single strand, and RNA is made up of a double strand. DNA is made up of a double strand, and RNA is made up of a single strand. Both DNA and RNA are made up of a single strand.

Which is not a characteristic of most nonmetals? Their atoms lose electrons when bonding with metal atoms. Their atoms gain electrons when bonding with metal atoms. Their atoms share electrons with other nonmetal atoms.

What happens to an isotopes during radioactive

Why does the effective nuclear charge increase across a row of the periodic table?

Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False