Answer:
Part 1
option C
CaCO3 + 2HCL -> CaCl2 + H20
Part 2
option A - The model is missing a product, CO2
Explanation:
In part 1, the ONLY FLAWED reaction model is CaCO3 + 2HCL -> CaCl2 + H20, simply because the model is missing a product, CO2.
Now, the CORRECT reaction model is stated as follows:
CaCO3 + 2HCL -> CaCl2 + H20 + CO2
Note that the reaction model DESCRIBES the how the useful Calcium Chloride (CaCl2) is formed from limestone (CaCO3), alongside water H2O and Carbon dioxide (CO2).
So, option C is the RIGHT ANSWER for Part A; while option A is to Part B
We are asked to give two possible explanation when bubbles are formed as two colorless solutions are mixed together. Presence of bubbles means that there is a gas formed in the products side and that the one of the reactants can be an acid.
years I can answer this question
Answer: density, Omass, radiation, pressure because Radiation pressure is the mechanical pressure exerted upon any surface . Small bodies are more affected than large ones because of their lower mass relative to their surface area formed by the radiation pressure of the young stars reduces the cluster mass enough to allow rapid dispersal.
Explanation: I Hope that helped!!!
Answer:
1. some thing that has matter is an apple, a person,a table. things that does 2.not Light.,Sound.,Heat.Energy.Gravity.Time.A Rainbow.Love.
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.Precipitate: In chemistry, a solid formed by a change in a solution, often due to a chemical reaction or change in temperature that decreases solubility of a solid. In meteorology a precipitate is liquid or solid water (rain, snow, etc.) falling from the sky.
6.n 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.
hope this help plz give me a thxs and brainlyest and a five star thx and you welcome let me know if this helped
Explanation: