The following reaction shows sodium hydroxide reacting with sulfuric acid.

naoh + h2so4 → na2so4 + h2o

how many grams of na2so4 are produced from 10.0 grams of naoh?

(molar mass of na = 22.989 g/mol, o = 15.999 g/mol, h = 1.008 g/mol, s = 32.065 g/mol)

17.8 grams
19.2 grams
35.5 grams
38.5 grams

The mass of produced will be 17.8 grams.

Explanation:

To calculate the number of moles, we use the equation:

 ....(1)

For Sodium hydroxide:

Given mass of sodium hydroxide = 10 g

Molar mass of

Putting values in above equation, we get:  

For the given chemical equation:

By Stoichiometry of the reaction:

2 moles of sodium hydroxide produces 1 mole of sodium sulfate.

So, 0.25 moles of sodium hydroxide will produce = of sodium sulfate.

Now, to calculate the mass of sodium sulfate, we use equation 1:

Moles of sodium sulfate = 0.125 moles

Molar mass of

Putting values in equation 1, we get:

Hence, the mass of produced will be 17.8 grams.

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).