Explanation:
A balanced chemical equation is one in which the law of conservation of matter is obeyed. The law states that "matter is neither created nor destroyed in the course of a chemical reaction".
This implies that the total mass of the products of a reaction is exactly the same as the total mass of the reacting substances.
In balancing a chemical equation, there is conservation of all kinds of atoms involved in the reaction being represented by the equation.
- Appropriate numbers called coefficients are put in front of the formula to balance an equation.
- Subscripts should not be altered in an attempt to balance equation.
Some methods can be used in balancing chemical equations;
A trial and error method is useful for balancing simple equations and it involves putting appropriate coefficients in front of the formula of the reactants or products as to achieve a conservation of all atoms.
In a mathematical approach, simple algebraic equations are set up for equations that cannot be simply balanced by inspection. This involves using simple algebraic equations for each kind of atoms or groups taking part in a reaction so as to achieve the conservation of all atoms or groups.
learn more:
Balanced equation brainly.com/question/2612756
#learnwithBrainly
The correct answer would be A. To determine the overall order of the reaction, Jason should add the exponents of the concentrations in the rate law. The overall order of a reaction is the sum of all the index or exponent of the concentration terms in the rate law.
It’s x200 plus 300 that’s why it is that answer
Answer:
8.625 grams of a 150 g sample of Thorium-234 would be left after 120.5 days
Explanation:
The nuclear half life represents the time taken for the initial amount of sample to reduce into half of its mass.
We have given that the half life of thorium-234 is 24.1 days. Then it takes 24.1 days for a Thorium-234 sample to reduced to half of its initial amount.
Initial amount of Thorium-234 available as per the question is 150 grams
So now we start with 150 grams of Thorium-234
So after 120.5 days the amount of sample that remains is 8.625g
In simpler way , we can use the below formula to find the sample left
Where
is the initial sample amount
n = the number of half-lives that pass in a given period of time.