Select the correct answer. What is the SI unit of time?
2 answers:
Option A: second
SI units are international system of units. This is defined as a system of units of physical quantities such as mass, length, temperature, current etc. Some of the physical units are gram, meter, second etc. along with the set of prefixes which indicates the multiplication and division with some power of 10.
For same physical quantities, these units are inter convertible For example,
and,
Here, g (gram), kg (kilogram) and mg (milligram) all are units of mass.
The units of time are second, minute, hour, day and year. Here, second is the SI unit and all the units are inter convertible as follows:
1 year=365 days
1 day=24 hours
1 hour=60 minutes
1 minute-60 seconds
Thus, the SI unit of time is second.
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Answer:
Explanation:
The pressure is constant, so we can use Charles' Law to calculate the volume.
Data:
V₁ = 693 mL; T₁ = 45 °C
V₂ = ?; T₂ = 150 °C
Calculations:
(a) Convert temperature to kelvins
T₁ = ( 45 + 273.15) = 318.15 K
T₂ = (150 + 273.15) = 423.15 K
(b) Calculate the volume