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.
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Answer:
- Tres contribuciones de la química son;
1) La capacidad de almacenar energía eléctrica en baterías
2) La producción de fertilizantes a partir de amoníaco se utiliza para aumentar el rendimiento de los cultivos.
3) El campo de la medicina y la salud ha mejorado en gran medida con la llegada de los analgésicos utilizados en procedimientos quirúrgicos.
- Tres problemas generados por el uso irresponsable de alguna sustancia química.
1) Aumento de la tasa de delitos de violencia debido al abuso de drogas químicas
2) Producción de invernadero por CFC utilizados anteriormente como refrigerantes
3) Alto nivel de contaminación en el medio ambiente por el uso de productos químicos no reciclables
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Lista de cinco químicos usados diariamente en nuestros hogares.
1) Jabón (ésteres)
2) sal
3) Grafito (en lápices)
4) azúcar
5) Peróxido de hidrógeno (enjuague bucal)
Explanation:
Los productos químicos son esenciales en nuestra existencia diaria, ya que utilizamos productos químicos como fuente de energía, curación, limpieza e impresión.
Answer: See attachment.
Explanation:
Exceptions to the octet rule fall into three categories:
- An incomplete octet.
- An odd number of electrons.
- More than eight valence electrons around the central atom.
In addition to the 3<em>s</em> and 3<em>p</em> orbitals, x<u>enon also has 3</u><u><em>d</em></u><u> orbitals that can be used in bonding</u>. These orbitals enable xenon to form an expanded octet.
The lab coat is not thick enough to protect you from ionizing radiation.
<h3>What is radiation?</h3>
Radiation is a form of energy that we can not see with our optical eyes. We know that radiation could have a damaging effect on the body. The sort of radiation that could have a damaging effect on the body is what we call ionizing radiation.
We know that an ionizing radiation could only be stopped by a thick vest such as a lead coat. If you are wearing a lab coat, you are not safe because the lab cat is not thick enough to protect you from ionizing radiation.
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