To find the number of gaseous molecules, we must first find the number of moles, represented by the variable
, in the equation
.
First, identify your constants.
The gas constant:
(These units are important!)
Volume of the flask:
Standard temperature:
(0°C)
Standard pressure:
Second, isolate the variable
.
All you need to do at this point is plug in the numbers for P, V, R, and T for n. Next, we convert from mols to molecules by multiplying n by Avogadro's number,
.
Hope this helped!
All the fossil fuels...coal, oil, gas...are examples of no return enable energy resources.
Answer:
1. An apple is something that has matter.
2. Light does not have matter. It neither has mass or takes up and space.
3. Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
4. A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!
5. A precipitate is a solid that forms out of solution.
6. In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.
Explanation:
Matter is anything that has mass and takes up volume.
Answer : The ionic equation will be:
Explanation :
Neutralization reaction : It is a type of chemical reaction in which an acid react with a base to give salt and water as a product that means it reacts to give a neutral solution.
When baking soda (sodium hydrogen carbonate) base react with lactic acid then it react to gives sodium lactate, carbon dioxide and water as a product.
The balanced chemical reaction will be:
The ionic equation will be: