Answer:
The types of energy that are involved in a chemical reaction are :
(A) Activation Energy
(B) Chemical Energy.
- The energy required for a chemical reaction to take place is known as the activation energy. - If the energy is less than the activation energy, the reaction will not take place.
Answer:
Living things can have a minimum of one cell
Explanation:
Living things can have a minimum of one cell; these are called unicellular organisms. Some examples of unicellular organisms: bacteria, algae (plants), some fungi, and protozoa
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Chemical equation
<h3>
What is a chemical equation?</h3>
- The reactants and products of a chemical reaction are represented symbolically in a chemical equation by the appropriate chemical formulas.
- A chemical equation that illustrates how Calcium oxide (quicklime) and carbon dioxide are produced during the breakdown of limestone.
CaCo3 → CaO+ CO2 (Decomposition reaction)
- The portion of the chemical equation on the reactant side is to the left of the symbol "→," and the portion on the product side is to the right of the arrow symbol.
<h3>
Decomposition reaction:-</h3>
A chemical reaction that results in the breakdown of one reactant into two or more products is known as a decomposition reaction.
Learn more about Chemical equations here:-
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Answer:
71 Ga has a naturally abundance of 36%
Explanation:
Step 1: Given data
Gallium has 2 naturally occurring isotopes: this means the abundance of the 2 isotopes together is 100 %. The atomic weight of Ga is 69.72 amu. This is the average of all the isotopes.
Since the average mass of 69.72 is closer to the mass of 69 Ga, this means 69 Ga will be more present than 71 Ga
Percentage 69 Ga> Percentage 71 Ga
<u>Step 2:</u> Calculate the abundance %
⇒Percentage of 71 Ga = X %
⇒Percentage of 69 Ga = 100 % - X %
The mass balance equation will be:
100*69.72 = x * 71 + (100 - x)*69
6972 = 71x + 6900 -69x
72 = 2x
x = 36 %
71 Ga has a naturally abundance of 36%
69 Ga has a naturally abundance of 64%