Answer:
2.8 m
Explanation:
Step 1: Given data
- Moles of potassium bromide (solute): 0.210 mol
- Mass of water (solvent): 0.075 kg
Step 2: Calculate the molality of the solution
Molality is a unit used to express the concentration of a solution. It is equal to the moles of solute divided by the kilograms of solvent.
m = moles of solute / kilograms of solvent
m = 0.210 mol / 0.075 kg
m = 2.8 mol/kg = 2.8 m
Answer:
<em>D. Hydrochloric acid solution with a pH of 1</em>
Explanation:
1} Trace fossils
2} Invasive
3} The age of depths
4} Any kind of weathering or rocks
5}Weathering, deposition, erosion
The following observation would be included in a hypothesis: a connection between type of material and thermal energy transfer is developed (option C).
<h3>What is a hypothesis?</h3>
Hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
The hypothesis is regarded as an educated guess because it predicts the possible outcome of an experiment.
The hypothesis is a statement that relates the independent variable of the experiment with the measured or dependent variable.
Therefore, the following observation would be included in a hypothesis: a connection between type of material and thermal energy transfer is developed.
Learn more about hypothesis at: brainly.com/question/13025783
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The answer to this would be a physical change. Physical changes are changes that affect the form of a chemical substance, but not the chemical composition itself. Hope this helped!