Heat (energy) and matter are both able to enter or leave the system.
There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
Answer:
4.68x10⁻⁵N
Explanation:
The pH is defined as -log [H⁺]. If an acid has a pH of 4.33, [H⁺] is:
pH = -log [H⁺]
4.33 = -log [H⁺]
10^(-4.33) = [H⁺]
4.68x10⁻⁵M = [H⁺]
The [H⁺] is in molarity units, that is mole / L. Normality has as units equivalent / L. As the equivalent in an acid-base reaction is defined as the number of moles of H⁺, in this case:
4.68x10⁻⁵M = <em>4.68x10⁻⁵N</em>
Answer:
1A, 3B, and 7A are examples of group _ on the periodic table. ... Elements in group 2 are all called alkaline earth metals.
Explanation:
Answer: HF-dipole- dipole interaction
CH3OH- dipole-dipole interaction
CaCl2- ion-ion interaction
Explanation:
Both CH3OH and HF possess permanent dipoles which interact with water leading to the dissolution of the above named substances. Remember that water also possesses a permanent dipole. Which can interact with the dipoles on other polar molecules. CaCl2 is purely ionic and interacts with water via ion-dipole mechanism.