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forsale [732]
3 years ago
5

Two samples of gold that have different temperatures are placed in contact with one another. Heat will flow spontaneously from a

sample of gold at 60°C to a sample of gold that has a temperature of
(1) 50°C (3) 70°C
(2) 60°C (4) 80°C
Chemistry
2 answers:
galina1969 [7]3 years ago
7 0
It is 50. This is because heat goes from higher temperatures to lower and nothing else in the options is lower.
DochEvi [55]3 years ago
4 0

Answer:

50^{o} C

Explanation:

The second law f thermodynamics tells us that naturally, heat will flow from a hotter object to a colder object until the bodies are at the same temperature. So heat will spontaneously flow from gold at 60 degrees Celsius to a body that is colder than it which on the list of possible answers.

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Arte-miy333 [17]

Five. The measurement 50,600 mg has five significant digits.

I presume that you are using the comma as a decimal separator.

The <em>rules for significant figures</em> are
1. Nonzero digits are always significant.
2. Any zeros between two significant digits are significant.
3. Final or trailing zeros are significant only if they are to the right of a decimal point.

• According to Rule 1, the <em>5 and 6</em> are significant.
• According to Rule 2, the <em>0 between the 5 and 6</em> is significant
• According to Rule 3, the <em>final two zeros</em> are significant.

Thus, there are five significant digits in the measurement 50,600 mg.

Note: If the comma is a thousands separator, the number has only three significant digits.

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