Answer:
The one on the left has more products than reactants and is endothermic
The one on the right has more reactants than products and is exothermic
Explanation:
Endothermic: Energy is absorbed
Exothermic: Energy is released
Answer:
B. 4.52 X10-9 M
Explanation:
Our goal for this question is to <u>calculate the concentration of hydronium ions</u> produced by water in a vessel with a concentration of hydroxide ions of . So, our first approach can be the <u>ionization reaction of water</u>:
If we write the <u>Keq expression</u> for this reaction we will have:
Now, water is the universal solvent, so, Keq has a special name. In the equilibrium problems for water we have to use <u>"Kw" instead of "Keq"</u>:
From this equation, we know the Kw value () and the concentration of the hydroxide ions ([2.21X10^-^6~M]). If we replace these values into the equation we can solve for :
I hope it helps!
Answer:
A is the answer. Ca(calcium) is an element, O2 is a diatomic element, and NaCl is a compound composed of Na(sodium) and Cl(chlorine)
Explanation:
hopefully that helps!!!
Kinetic energy is proportional to the velocity squared, so increasing in velocity will have an exponentially greater affect on translational kinetic energy. if you doubled the mass of an object it will double only it’s kinetic energy, but doubling the velocity of the object will quadruple its velocity.
1 teaspoon contains <span>76.002146 drops
To know how many drops do 0.171 teaspoon contains, we can simply use cross multiplication as follows:
number of drops = (0.171 x </span><span>76.002146) / 1 = 12.9963 drops</span>