If an atom has 7 electrons how many of them will be in the 2nd level

What is the name of the compound co2s3?

Which of the following is a clue of a chemical change? a. balls of wax form when melted wax is poured into ice water b. iron changes color when heated c. gas bubbles form in boiling water d. a gas forms when vinegar and baking soda are mixed?

What is classified as a pure substance. A: Compound B: Colloid C:Solution D: Homogeneous Mixture

Which statement best explains why the overall charge on an atom is zero? a. The positive charge of the neutrons in the nucleus equals the negative charge in the electron cloud. b.

Consider the following reaction: A + 4B ➔ 3C + 2D If 5.0 mol of A reacts with 12.0 mol of B to form 6.0 mo! of C, the percent yield of the reaction is:

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines

Water is a great solvent. For example, it causes ionic compounds like sodium chloride (table salt) to dissociate. One of these reasons that water does is because it is polar molecule.

For most compounds with a single keto group in the molecule, equilibrium favors the keto form over the enol form of the compound. this is due largely to what?