Compound - made out of two or more types of elements chemically combined
Mixture - two or more substances in which the substances retain their identity
Element - simplest form of matter that is present by itself
The mass of an electron is:
0.00054386734 or 9.1 x <span>10^-31 kg</span><span>.
</span>Good Luck!!
Answer: Neptune
Explanation: think about the phrase
My Very Eager Mother Just Served Us Nachos
(Mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus, Neptune)
Answer:
89.2 %
Explanation:
Percent yield = (Yield produced / Theoretical yield) . 100
(19.1 g / 21.4 g) . 100 = 89.2 %
Answer:
NaF>NH3>H2S>CO2
Explanation:
The boiling point of a substance depends on the magnitude of electronegativity difference and the type of bond between the atoms of the compound in question.
NaF is an ionic substance. Ionic substances have a high melting and boiling point due to the fact that the ionic lattice contains a large number of ions. This means that a lot of energy is usually required to overcome this ion-ion interaction therefore ionic compounds usually have high melting and boiling points.
Nitrogen is more electronegative than sulphur hence NH3 is more polar than H2S and consequently NH3 has a higher boiling point than H2S due to stronger dipole-dipole interaction.
CO2 is a nonpolar molecule hence it has the lowest boiling point. Only weak dispersion forces exist in CO2.