Answer:
Diamond
Explanation:
As light moves from a less dense medium to a denser medium it slows down.
This is because the wave length of the light reduces. The denser the medium the less the wavelength. Diamond is the most dense solid among the provided choices thus light travelling through it has the least wavelength.
Flat character -we don’t know much about mud other that it’s describing it doesn’t have feelings it doesn’t develop
Answer:
The coefficients of a balanced chemical equation tell us the relative number of moles of reactants and products. All stoichiometric calculations begin with a balanced equation. Balanced equations are necessary because mass is conserved in every reaction. ... This is the reactant that is completely used in the reaction.
Explanation:
Answer:
A and D
Explanation:
Ionic compounds have electrostatic attractions which must be broken for it to melt or boil. these attraction are very strong so a lot of energy is needed which is why they have high BP and MP.
Ionic compounds dissolve in water and conduct electricity. Therefore, all these descriptions match compound A and D.
Answer: All elements have a ΔHf of 0 (zero) at standard temperature and pressure.
Standard ΔHf of formation is the standard enthalpy (heat) of formation of the compound. It is defined as the change of enthalpy when one mol of compound is formed in its standard state from the elements in their standard state.
Then, as the elements are already in their standard state, there is not any change and the standard enthalpy of an element in its standard state is, by definition, zero.
