PV = nRT
T
=
PV
nR
=
1.0 atm × 0.5 L
3.5 mol × 0.0821 L atm / (mol K)
=
1.74 K
Answer:
18
Explaintion:
Hope you got it right
Answer:
The correct answer would be "They could allow scientists to explore remote places, like other planets, in new ways".
As the artificial muscles are lightweight and can withstand high temperatures they can be used efficiently in exploring remote places, stars, or planets where humans can not survive.
For example, they can be used to explore the inner or outer core region of the earth which would help us more in understanding the earth.
Similarly, robots with these types of muscles can be used to obtain samples from other planets which have a very high temperature such as mercury.
Answer:
Explanation:
A testable question is the one which can be answered using experiment and research. A non-testable question is the one which cannot be answered using experimental trials.
Example:
Non-testable: Which is more better ice-cream or chips?
Testable: Which is more better nutritionally ice-cream or chips?
Here, in the non-testable question no parameter was given for comparision and analysis hence, it cannot be tested experimentally. Whereas, in the testable question nutritional quality is to be compared between the two food items.
There are<u> </u><u>11.5 moles</u> of potassium contained in 449 g fundamental units of potassium. therefore,
option B is correct.
A mole is the mass of a substance made up of the same number of fundamental components. Atoms in a 12-gram example are identical to 12C. Depending on the substance, the fundamental units may be molecules, atoms, or formula units.
Atomic weight 39.1 is assigned to potassium (chemical symbol K).
K content in a 449g sample is equal to
=given weight / atomic weight
=449/39.1
= 11.5mol.
A 449g sample has 11.5 moles of potassium.
Learn more about fundamental units here-
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