The atomic mass of carbon is 12.01, sodium is 22.99, and oxygen is 16.00. What is the molar mass of sodium oxalate (Na2C2O4) ?

Determine the volume of atmospheric air (at 14 lb/in.^2) needed to fill your bike tires (assuming it holds 500 mL of air) to the pressure recommended by the manufacturer (70 lb/in.^2)

Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess?

The ka of phosphoric acid, h3po4, is 7.6  10-3 at 25 °c. for the reaction h3po4 (aq) h2po4 - (aq) + h + (aq) ∆h° = - 14.2 kj/mol. what is the ka of h3po4 at 60 °c?

When the volume changes from 63.5 mL to 69.2 mL, what is the final pressure if the initial pressure was 735 mmHg pressure? law used?

Which of the following is a cause of soil compaction? a. an increase in the amount of organic matter b. the use of equipment on dry soil c. the use of heavy equipment d. all of the above

Write the complete electron configuration for the noble gas found in the third period

Convert 0.023 kg to centigran

How many unpaired electrons arethere in Cu1 + ion

A 750 mL sample of nitrogen is heated from 30°C to 92 C at constant pressure. What is the final volume?

Write a brief explanation about why a plant extract is a mixture