A Na2CO3 standard solution is prepared by transferring 2.4817 g of primary
standard-grade sodium carbonate (fw = 106 g/mol) to a 250-ml volumetric flask.
Dissolving the sample in - 100 mL distilled water and diluted to the mark. A 25.0
mL aliquot is taken and titrated with 42.65 mL of HCl, calculate the
concentration of the HCl solution?

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?