Search results
Nov 29, 2022 · A scientific theory explains why or how natural phenomena occur. A scientific law is a statement or mathematical equation that describes or predicts a natural phenomenon. It does not explain why or how a phenomenon occurs. Another name for a scientific law is a law of nature or law of science.
Oct 27, 2022 · Rate laws or rate equations are mathematical expressions that describe the relationship between the rate of a chemical reaction and the concentration of its reactants. In general, a rate law (or differential rate law, as it is sometimes called) takes this form: rate = k[A]m[B]n[C]p….
- mol1 − ( m + n) L ( m + n) − 1s − 1
- L/mol/s
- s −1
- mol/L/s
May 20, 2018 · One example of a law, the law of definite proportions, which was discovered by the French scientist Joseph Proust (1754–1826), states that a chemical substance always contains the same proportions of elements by mass. Thus, sodium chloride (table salt) always contains the same proportion by mass of sodium to chlorine, in this case 39.34% ...
The word "law" is used less and less in science, as many laws are only true under limited circumstances. Example: Consider Newton's Law of Gravity . Newton could use this law to predict the behavior of a dropped object but he couldn't explain why it happened.
- Combining Volumes. Refer to Gay-Lussac's Law. Conservation of Energy. Energy can neither be created nor destroyed; the energy of the universe is constant. This is the First Law of Thermodynamics.
- Definite Composition. A compound is composed of two or more elements chemically combined in a defined ratio by weight.
- Dulong-Petit Law. Most metals require 6.2 calories of heat to raise the temperature of one gram-atomic mass of metal by one degree Celsius. Faraday's Law.
- Gay-Lussac's Law. The ratio between the combining volumes of gases and the product (if gaseous) can be expressed in small whole numbers. Graham's Law. The rate of diffusion or effusion of a gas is inversely proportional to the square root of its molecular mass.
Rate laws (sometimes called differential rate laws) or rate equations are mathematical expressions that describe the relationship between the rate of a chemical reaction and the concentration of its reactants. As an example, consider the reaction described by the chemical equation
People also ask
What is a scientific law?
What are the basic laws of Chemistry?
What is an example of a law?
Sep 10, 2020 · For example, in carbon monoxide \((CO)\), the mass ratio of oxygen to carbon \(m_O/m_C =1.33\) and in carbon dioxide \((CO_2)\) \(m_O /m_C =2.66\). Thus, since the amount of carbon is fixed in each compound, we can look at how the amount of oxygen varies, and we find that \(m_O (in \ CO_2)/m_O(in \ CO)=2\).
