Astronauts experience weightlessness which is the apparent loss of weight of an object that is falling in gravitational field
Answer:

Explanation:
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In this case, we can first compute the heat required for such temperature increase, considering the molar heat capacity of water (75.38 J/mol°C):

Afterwards, the mass of ice that can be melted is computed by:

So we solve for moles with the proper units handling:

Finally, with the molar mass of water we compute the mass:

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The scientific method is defined as a method of research in which a problem is identified, relevant data is gathered, a hypothesis is formulated from this data, and the hypothesis is empirically tested.
Explanation: Walking for 30 minutes covers a distance of 2.0 to 2.5 km and burns about 125 calories
Answer: 2-butanol
Explanation: I looked it up, I really don’t know how trustworthy my source was. (not Wikipedia)