<span>Hydrogen-2 has one neutron; hydrogen-1 has none</span>
Yes, salt is considered a pure substance. The definition of a pure substance is something that cannot be broken down further without losing the...
Salt is another compound. Its chemical formula is NaCl, which stands for sodium chloride. Tooth fillings may look like pure silver, but they are actually a solution of mercury in silver.
Charles law states a proportional relationship between volume and temperature.
V1= 100mL=0.1L
V2=400mL=0.4L
T1=80'c+273=353K
T2=?
T2=1412K-273=1139'C
Explanation:
11. The correct option is B. The range for polar covalent bond is; 0.3 - 1.4
12. C. This is because there is uneven distribution of the charge. Unlike in the other options which are molecules of the same atoms with equal electronegativity.
13. A. Resonance structures is the correct option. It describes electrons in certain molecules or polyatomic ions where the bonding cannot be expressed by a single Lewis formula.
14. A. Lower electronegativity values means the electrons are more likely to be shared than transferred (gain/lost).
15. D. H2O is more polar than H2S because of the electronegativity of oxygen. H2O also has hydrogen bonds.
16. C. Due to the geometry of the other molecules, the polarity are cancelled.So they have a net polarity of zero.
