Answer: reduction-oxidation
Explanation:
Molarity = number of moles of solute / liters of solution
number of moles = molarity * liters of solution
number of moles of Na2C2O4 = 0.1 * 0.25 = 0.025 moles
Now, from the periodic table:
mass of Na = 22.9 grams
mass of C = 12 grams
mass of O = 16 grams
molar mass of Na2C2O4 = 2(22.9) + 2(12) + 4(16) = 133.8 grams
Therefore, one mole is equal to 133.8 grams. To know the mass of 0.025 moles, all you have to do is cross multiplication as follows:
mass = (0.025*133.8) / 1 = 3.345 grams
Answer : If a reactant undergoes first order kinetics and the initial reactant was R is consumed in 4 half lives then,
the first half life would undergo from 1 to 1/2R;
the second half life will go from 1/2R to 1/4R;
in third half life it will undergo from 1/4R to 1/8R;
And finally in fourth half life it will go from 1/8R to 1/16R.
So, it means

is utilized and only 1/16 R remains
Answer: Matter changes state when energy is added or taken away. Most matter changes because of heat energy. Changes in pressure can change matter, too.
Explanation: