Polyatomic ions

a. are a result of ionic bonds.

b. contain covalent bonds.

C. contain both ionic and covalent bonds.

d. are always charged.

e. both band d.

What is a isotope?

A 5.50 gram sample of c2h6 gas has a volume of 2.50l. If the sample is at 41.2c what will it's pressure be?

There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium-241 to neptunium-237.

What is true of a molecule? A) each molecule of a compound have different properties B) all molecules of a compound have the same properties C) all molecules of a compound have 1 type of atom D) each atom of a molecule is the same

What holds the two strands of a DNA molecule to each other?

which of the following questions can use science as a method of inquiry? a. is cloning appropriate b. how can we protect crops from drought c. why is jazz a great type of music d. did dinosaurs exist

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?