What system maintains the ph of human blood at very near 7 ... 4

You have a piece of gold and you cut it into smaller pieces. If you could continue cutting, you would eventually separate the gold into tiny pieces that could no longer be divided without losing their gold-like properties.

In a methane molecule (ch4), there are 4 single covalent bonds. in an octane molecule (c8h18), there are 25 single covalent bonds.

State the difference between mass and weight

An atom that contains 22 protons, 23 neutrons, and 22 electrons would have a mass of approximately

A 7.337 gram sample of chromium is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 9.595 g. Determine the empirical formula of the metal oxide.

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?