Styrofoam cup. That's all that can float in water.
Answer:
Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable. Therefore, ions combine in ways that neutralize their charges.
Explanation:
Answer:
A. 74g/mol
B. 37.8%
Explanation:
A. Determination of the molar mass of dimethylnitrosamine, (CH3)2N2O.
The molar mass of dimethylnitrosamine, (CH3)2N2O can be obtained by adding the atomic masses of the elements present in the compound. This is illustrated below:
Molar mass of (CH3)2N2O = 2[12+ (3x1)] + (2x14) + 16
= 2[12 + 3] + 28 + 16
= 2[15] + 28 + 16
= 30 + 28 + 16
= 74g/mol.
B. Determination of the percentage composition of N in the compound. This is illustrated below:
There are 2 atoms of N in (CH3)2N2O. Mass of N in (CH3)2N2O = 2 x 14 = 28g
Mass of (CH3)2N2O = 74g
%N = Mass of N / mass of (CH3)2N2O x 100
%N = 28/74 x100
%N = 37.8%