(a)
Interpretation:
Whether the statement “
Concept introduction:
An exact number is a completely certain number, that is, which can be counted. For example, 1 kilometer has exactly 1000 meter or 1 dozen has 12 number of items, which is also an exact number.
Exact numbers have infinite significant figures and zero error or uncertainty. Example 12 has infinite significant figures but 12.00 has 4 significant figures. To exactly determine the uncertainty in the final answer of measurement, significant figures are calculated.
The rules for counting significant figures will be as follows:
- Numbers that are non-zero are significant figures.
- The zeros preceding numbers that are non-zero are non-significant as they only define the place of decimal.
- The zeros in between numbers that are non-zero are also significant.
- The zeros after numbers that are non-zero are significant only if the decimal is present in the number.
(b)
Interpretation:
Whether the statement “
Concept introduction:
An exact number is a completely certain number, that is, which can be counted. For example, 1 kilometer has exactly 1000 meter or 1 dozen has 12 number of items, which is also an exact number.
Exact numbers have infinite significant figures and zero error or uncertainty. Example 12 has infinite significant figures but 12.00 has 4 significant figures. To exactly determine the uncertainty in the final answer of measurement, significant figures are calculated.
The rules for counting significant figures will be as follows:
- Numbers that are non-zero are significant figures.
- The zeros preceding numbers that are non-zero are non-significant as they only define the place of decimal.
- The zeros in between numbers that are non-zero are also significant.
- The zeros after numbers that are non-zero are significant only if the decimal is present in the number.
(c)
Interpretation:
Whether the statement that “Mount Everest has
Concept introduction:
An exact number is a completely certain number, that is, which can be counted. For example, 1 kilometer has exactly 1000 meter or 1 dozen has 12 number of items, which is also an exact number.
Exact numbers have infinite significant figures and zero error or uncertainty. Example 12 has infinite significant figures but 12.00 has 4 significant figures. To exactly determine the uncertainty in the final answer of measurement, significant figures are calculated.
The rules for counting significant figures will be as follows:
- Numbers that are non-zero are significant figures.
- The zeros preceding numbers that are non-zero are non-significant as they only define the place of decimal.
- The zeros in between numbers that are non-zero are also significant.
- The zeros after numbers that are non-zero are significant only if the decimal is present in the number.
d)
Interpretation:
Whether the statement that “the world record for
Concept introduction:
An exact number is a completely certain number, that is, which can be counted. For example, 1 kilometer has exactly 1000 meter or 1 dozen has 12 number of items, which is also an exact number.
Exact numbers have infinite significant figures and zero error or uncertainty. Example 12 has infinite significant figures but 12.00 has 4 significant figures. To exactly determine the uncertainty in the final answer of measurement, significant figures are calculated.
The rules for counting significant figures will be as follows:
- Numbers that are non-zero are significant figures.
- The zeros preceding numbers that are non-zero are non-significant as they only define the place of decimal.
- The zeros in between numbers that are non-zero are also significant.
- The zeros after numbers that are non-zero are significant only if the decimal is present in the number.
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CHEMISTRY-TEXT
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- Perform the following conversions:(a) 10⁶°F (the body temperature of many birds) to K and C(b) 3410°C (the melting point of tungsten, the highest for anymetallic element) to K and F(c) 6.1X10³K (the surface temperature of the Sun) to °F and °Carrow_forwardCalculate these volumes.(a) What is the volume of 25 g iodine, density = 4.93 g/cm3?(b) What is the volume of 3.28 g gaseous hydrogen, density = 0.089 g/L?arrow_forward. The Empire State Building is 443.2 meters. The height of Kilimanjaro is 19,341 meters.(a) Express each of these heights in scientific notation and use all the digits given.(b) Which is taller? How many orders of magnitude taller?arrow_forward
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