How many moles of carbon are in 7.87x10^7

Which compounds yield hydrogen ions as the only positive ions in an aqueous solution? (1) H2CO3 and HC2H3O2 (2) H2CO3 and NaHCO3 (3) NH3 and HC2H3O2 (4) NH3 and NaHCO3

7. How many moles are in 5 x 10 2 atoms of gold?

What is the best definition of low electromagnetic energy? A. Low electromagnetic energy has long wavelengths and low frequency. B. Low electromagnetic energy has long wavelengths and high frequency. C.

Photolysis is a part of which cycle? a. phosphorus b. oxygen c. nitrogen d. carbon User: What do the carbon, oxygen, and nitrogen cycles all have in common? a. They all include an exchange of gases with the atmosphere. b.

A glass of water sits on a table. the temperature of the water is the same as that of the glass. which would move faster, the silicon dioxide (sio2) molecules that make up the glass or the water (h2o) molecules?

There are three ways that heat can move from one place to another. Use examples pertaining to how heat is transferred from the sun to Earth and in the land, ocean, and atmosphere to explain all three.

What is temperature? A measure of the kinetic energy of a system. Energy of a system. How hot something is. A measure of density.

How many molecules of sodium nitrate are produced when 17 g of sodium azide, NaN3, react according to the following equation: NaN3 (aq) + AgNO3 (aq) - --> AgN3 (s) + NaNO3 (aq) Question options: 3.7x1023 1.6 x 1023 1.85x1023 6.02x1023

Which statement is true for the given reaction? Zn + PbSO4

A student states the following: "Since acetone (nail polish remover) evaporate more readily than water, one would assume that acetone has weaker intermolecular forces than water." Evaluate their claim. (2 sentences)