Consider the molecules in the two proposed systems. How are they the same and how are they different?

1 answer:

3 0

Molecules may be similar or different on the basis of size, shape, structure and chemical composition.

<h2>Similarities and differences</h2>

Two molecules can be considered similar or different on the basis of size, shape, structure and chemical composition. The molecules in the two proposed systems are consider the same when they are similar in size, shapes, structure and chemical composition.

While on the other hand, the molecules is considered different when they have different structure and chemical composition so we can say that molecules may be similar or different on the basis of size, shape, structure and chemical composition.

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As long as a substance ________, it is considered a physical change.

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Answer:

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3 years ago

Ethanol has a Kb of 1.22 °C/m and usually boils at 78.4 °C. How many mol of an nonionizing solute would need to be added to 48.8

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Answer:

0.272 mol

Explanation:

∆Tb = m × Kb

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Let the moles of non-ionizing solute be y

m (molality) = y/0.0488

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Predictions about the future based on the position of planets is an example of physics biology earth science pseudoscience

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Answer:

Pseudoscience

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Predictions about the future can only be valid if it is based on the scientific method, not just about the position of the planet. The scientific method involves observation, hypothesis formulation, testing of the hypothesis through repeatable experiments, and arriving at conclusion.

Any other statement or belief that is not based on these procedures is said to be pseudoscientific.

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