Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. how many neutrons does nitrogen have?

What makes an atom of one element different from atoms of any other element

Gold is alloyed (mixed) with other metals to increase its hardness in making jewelry. A) Consider a piece of gold jewelry that weighs 9.40 g and has a volume of 0.675 cm3. The jewelry contains only gold and silver, which have densities of 19.

Identify two different habitats in a marine ecosystem. Name one organism found in each habitat

Which will be true for any actual or potential nucleophilic substitution reaction?

What has a density of q 1.0g/mL suppose you poured alcohol in the graduated cylinder with it. Where will it be in the cylinder relative to the water? Alcohol has a density of 0.8g/mL

Which one of the following compounds is an example of a covalent molecule? a) NaCl b) H2O c) KOH d) Al (NO3) 3

What must happen for heat to be transferred by convection

A compound contains 75% carbon and 25% hydrogen by mass. what is the empirical formula for this compound?

How do hydroxyl ions and hydronium ions affect pH?

What happens when non-metal atoms ionize? a. They lose electrons c. They gain electrons b. They lose 2 electrons d. They do not form ions