The atomic number is how much space is in a object and the mass number is how much it's filled... if I'm not mistaken...
Answer:
8
Explanation:
(8√2)² = x² + x²
8² × √2² = 2x²
64 × 2 = 2x²
128 = 2x²
64 = x²
x = 8
give me brainliest please
Answer:
A. Endothermic reaction.
B. +150KJ.
C. 250KJ.
Explanation:
A. The graph represents endothermic reaction because the heat of the product is higher than the heat of the reactant.
B. Determination of the enthalpy change, ΔH for the reaction. This can be obtained as follow:
Heat of reactant (Hr) = 50KJ
Heat of product (Hp) = 200KJ
Enthalphy change (ΔH) =..?
Enthalphy change = Heat of product – Heat of reactant.
ΔH = Hp – Hr
ΔH = 200 – 50
ΔH = +150KJ
Therefore, the enthalphy change for the reaction is +150KJ
C. The activation energy for the reaction is the energy at the peak of the diagram.
From the diagram, the activation energy is 250KJ.
<h2>
Answer:</h2><h3>According to data compiled by the U.S. Energy Information Administration, there are seven countries already at, or very, near 100 percent renewable power:</h3>
- Iceland (100 percent)
- Paraguay (100)
- Costa Rica (99)
- Norway (98.5)
- Austria (80)
- Brazil (75)
- and Denmark (69.4)
<em>hope</em><em> </em><em>this</em><em> </em><em>help</em><em>!</em>