Answer:
D. Pressure and temperature.
Explanation:
The answer is D because when water molecules (H2o) have heat and pressure added it will boil. For exampe if your cooking pasta, you add water to your pan and when you add heat and put the lid of the pan it will boil.
Answer:
They increase the concentration of the reactants
Explanation:
Nitrogen is more reactive than oxygen and oxygen than chlorine
Al(NO₃)₃ (aq) + 3NaOH(aq) --> Al(OH)₃ (s) + 3NaNO₃ (aq)
Keep in mind that any compound that contains nitrate will be soluble. Al(OH)₃ is insoluble. If the group 1A or 2A metals were with OH⁻, then it would have been soluble.
The precipitate would be aluminum hydroxide.
Let's now find the net ionic equation
Al(NO₃)₃ (aq) + 3NaOH(aq) --> Al(OH)₃ (s) + 3NaNO₃ (aq)
Al³⁺(aq) + 3NO₃⁻(aq) + 3Na⁺(aq) + 3OH⁻(aq) --> Al(OH)₃(s) + 3Na⁺(aq) + 3NO₃⁻(aq)
That is the molecular equation
The net ionic equation would be:
Al³⁺(aq) + 3OH⁻(aq) --> Al(OH)₃ (s)
Answer:
Models are important in the study of science because they explain a scientific phenomenon that is not directly experienced.
Explanation:
A Model in science is an idea, a process or a system applied by scientists to test hypothesis of a certain phenomenon in study. A model can be used to predict information using the data obtained. However, it is important to mention that after testing a model , a scientist can<u> improve it using new data</u> obtained in the area of study. Models are therefore <u>a vital part of scientific research and the results </u>communicated when explaining a phenomenon.
