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3 years ago

Balancing chemical equations

Chemistry

1 answer:

Mrrafil [7]3 years ago

4 0

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

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1. Which statement is accurate?

valkas [14]

1. Answer:

B) An allele is one form of a gene.

Explanation:

An allele refers to an alternative form of a gene. In other words it is one of the form of a gene.
A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele.
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.
A heterozygous organisms contain one dominant allele and one recessive allele.

2. Answer;

B) Alleles

Explanation;

According to Mendel genes are inherited in pairs of alleles that behave in a dominant and recessive pattern.
Alleles are alternative forms of a gene.

A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele.
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.

8 0

4 years ago

If 2 molecules of one reactant combine with 3 molecules of another to produce 5 molecules of a product, then what is the represe

zhenek [66]

Answer:- $2A+3B\rightarrow 5C$

Explanations:- Let's say the first molecule is A and the second molecule is B and the product molecule is C.

From given information, 2 molecules of A react with 3 molecules of B to produce 5 molecules of C.

We write the reactants on left side and the product on right side and there is an arrow between them from reactants towards the products.

So, the reaction could be represented as:

$2A+3B\rightarrow 5C$

3 0

3 years ago

What is the percent composition of silicon dioxide, SiO2 ? (Atomic masses : O = 16 . 0 Si =28 .1

weeeeeb [17]

Answer:

60.1 i think

Explanation:

4 0

3 years ago

Rasheed calculates that his chemical reaction should produce 4 moles of product, but when he does the experiment, he gets only 3

Brut [27]

Answer:

The answer to your question is 75%

Explanation:

Data

Theoretical production = 4 moles

Experimental production = 3 moles

Percent yield = ?

Formula

$Percent yield = \frac{Experimental production}{Theoretical production} x 100$

Substitution

$Percent yield = \frac{3}{4} x 100$

Result

Percent yield = 75 %

8 0

4 years ago

PLEASE HELP!!!!!!!

Keith_Richards [23]

Answer: The gas generated by two antacid tablets has a smaller volume.

Explanation:

Since the antiacid is the limiting reagent, we know that the more tablets there are, the more gas there will be.

This means that there will be more gas generated by the four antiacid tablets when compared to the two antiacid tablets, which gives us that the gas generated by the two antiacid tablets has a smaller volume.

6 0

2 years ago