Really good question i hope to see the answer to
Answer:
There are different explanations but the main one is the number of electrons the element has.
Explanation:
The elements are also divided into nonmetals, metals, and metalloids. There are general areas for example, most metals are in the middle and left side of the periodic table, nonmetals are typically on the right, and metalloids are inbetween them.
Answer:
made up of particles packed closely together , having both definite shape and a definite volume
The components of a mixture maintain their original properties. True. That is because a mixture is not combined chemically.
4C7H5N3O6 + 21O2 = 28CO2 + 10H2O + 6<span>N<span>2
</span></span><span>According to the reaction equation, it can be seen that TNT and O2 have following stoichiometric ratio:
</span><span>
n(</span>C7H5N3O6)<span> : n(O2) = 4 : 21
</span>n(O2) = 21/4 x n(C7H5N3O6) = 5.25 x n(C7H5N3O6)
n(C7H5N3O6) = m/M= <span>0.853/227 = 0.0038 mole
</span>
n(O2) = 5.25 x n(C7H5N3O6) = 5.25 x 0.0038 = 0.02 mole
m(O2) = n x M = 0.02 x 32 = 0.64 g = 640mg