Answer:
A) It contains a lot of matter.
Answer: The activation energy is 10 kJ and the reaction is exothermic.
Explanation: Exothermic reactions are those in which heat is released and thus the energy of products is less than the energy of reactants.
Endothermic reactions are those in which heat is absorbed and thus the energy of products is more than the energy of reactants.
Activation energy is the extra amount of energy required by the reactants to cross the energy barrier to convert to products.
Given : Energy of reactants = 40kJ
Energy of activation: (50-40)=10 kJ
Energy of products = 50 kJ
Energy of products = 15 kJ
Thus Energy of products (15kJ) < Energy of reactants(40kJ), the reaction is exothermic as energy has been lost to surroundings in the form of heat.
Answer:
The answer is
<h2>6.54 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of ball = 8.5 g
density = 1.3 g/mL
It's volume is
We have the final answer as
<h3>6.54 mL</h3>
Hope this helps you
Answer:
The part that is put in the same time as ruthenium, but has a greater number of atoms than silver.
Lithium 6 would have 6 valence electrons in the outer orbital, while lithium 7 would have 7 in the outer orbital.
