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Maru [420]
3 years ago
10

Question 3

Chemistry
1 answer:
zimovet [89]3 years ago
8 0
The answer is 4 hope it helped
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Why is an alloy is often more useful than a pure metal
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A pure metal has specific properties. Sometimes we need that metal but with modified properties. So for the modification of properties we make alloys.

<h3>Explanation;</h3>
  • An alloy is a mixture of two elements, one of which is a metal.
  • Alloys often have properties that are different to the metals they contain.
  • This makes them more useful than the pure metals alone.
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Significant figure is the measure of how accurately something can be measured. It carries meaning contributing to its measurement resolution. It is important to use proper number of significant figures to get a precise measurement. For example, if we use a meter stick then measurements like 0.874 meters, or 0.900 meters, are good because they indicate that we can measure to the nearest millimeter. Whereas a measurement like 0.8 does not tell that a meter stick can measure to the nearest millimeter.

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If a small pig runs 46 meters in 6 seconds, what is the pig's average speed?
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the pig's average speed is 7 m/s

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