Answer:
Explanation:
428 x 10³ Pa = 4.28 x 10⁵ Pa = 4.28 atm
We shall use the gas equation
P₁V₁ / T₁ = P₂V₂ / T₂
7.66 x 10 / ( 273 + 27 ) = 4.28 x 30 / T₂
.255 = 128.4 / T₂
T₂ = 503.53
= 503.53 - 273 = 230.53⁰C .
Dimensional analysis is a convenient technique to determine if the solution you're following would lead you to the answer that you're looking for. It is the manipulation of units. Like units are cancelled whenever they appear on the numerator and the denominator side. For example, if the speed is 5 m/s and the time is 2 s, the distance would be:
(m/s)*(s) = m
So, you would know that the solution would be 5*2 because it yields the unit for distance.
Hence, dimensional analysis could prevent crash by calculating the right velocities or distances of the two vessels to prevent collision.
A Glass pipet
Explanation:
The best laboratory equipment to measure out exactly 4.0mL of a liquid is a pipet.
The pipet is a glass tube with a suction as tthe top.
- It is designed for measuring small units of volume accurately.
- Once dipped into the fluid, the suction is pressed and the liquid gushes in.
- When released, the liquid fills the tube.
- The suction can be pressed at regular intervals to release the liquid till the desired volume is attained.
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The attractive force that occurs between the sun and the earth is called:
Gravity
This force works to keep everything on the planet grounded.
