One compound can be differentiate from other by its composition although both look same. The diamond has the chemical formula of carbon (c) as it is a repeating unit of carbon which has shining features. On the other hand zirconia is zirconium dioxide (Zr. When it is crystallized it becomes shiny as like diamond. However the look of the two are meanwhile similar the composition is totally different as well the molar mass.
The question is incomplete, the complete question is:
Standardization of a Borax solution (Na2B4O7). A student titrates a 20.00 mL sample of an aqueous borax solution with 1.044 M H2SO4. It takes 2.63 mL of acid to reach the equivalence point. Knowing it takes 1 H2SO4 to neutralize 2 Na2B4O7, what was the concentration of this Borax solution?
<u>Answer: </u>The concentration of borax solution is 0.069 M.
<u>Explanation:</u>
To calculate the concentration of borax solution, the formula used is:
....(1)
where,
are the n-factor, concentration and volume of sulfuric acid
are the n-factor, concentration and volume of borax solution.
We are given:
Putting values in equation 1, we get:
Hence, the concentration of borax solution is 0.069 M.
The nucleus of the atom is the heaviest part of the atom.
- The nucleus consists of neutrons and protons
- Both neutrons and protons have masses, but only protons have charges
- The nucleus contains all the positive charges of an atom
- The mass of an atom is the sum of the numbers of protons and neutrons in a nucleus
When the ratio of neutrons to protons is too high, the nucleus becomes unstable and Beta emission has to take place.
- In beta emission, an extra neutron gives rise to a proton and an electron
- The electron is ejected from the nucleus
Learn more about beta emission here:
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<u>Answer:</u> The final volume of the gas is 1250 mL
<u>Explanation:</u>
To calculate the amount of work done for an isothermal process is given by the equation:
W = amount of work done for expansion process = -123.3 J = -1.217 L.atm (Conversion factor: 1 L.atm = 101.33 J)
Work done for expansion process is taken as negative
P = pressure = 783 torr = 1.03 atm (Conversion factor: 1 atm = 760 torr)
= initial volume = 71.1 mL = 0.0711 L (Conversion factor: 1 L = 1000 mL)
= final volume = ?
Putting values in above equation, we get:
Hence, the final volume of the gas is 1250 mL