Answer:
A fire extinguisher
Explanation:
A lab station usually contains equipment for the people working at the station to use. However, most rooms will only have one fire extinguisher for the whole room meaning it would most likely be located somewhere that is easy to access by all and not just a singular lab station.
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Answer is: 550,021 kWh of energy is needed to heat the water
V(water) = 51 gal = 51·3,78 = 189,3 L.
ΔT(water) = 25°C.
d(water) = 1000 g/L.
m(water) = V(water) · d(water)
m(water) = 189,3 L · 1000 g/L
m(water) = 189300 g.
Q = m(water) · ΔT(water) · C(water)
Q = 189300 g · 25°C · 4,184 J/°C·g
Q = 19800780 J = 19800,78 kJ ÷ 3600 = 550,021 kWh.
Answer: The correct answer is option E.
Explanation:
When (1R,2R)-1-chloro-2-methylcyclohexane is heated with a strong base such as NaOCH3, the predominant product will be an alkene.
It is important to note that when such compounds undergo elimination as a result of heat, the resultant product is usually an alkene.
The available options are:
A. 3-methylcyclohex-1-ene (racemic)
B. methylcyclohexene
C. (1S,2R)-1-methoxy-2-methylcyclohexane
D. (S)-3-methylcyclohex-1-ene
E. (R)-3-methylcyclohex-1-ene
F. (1R,2R)-1-methoxy-2-methylcyclohexane
The correct answer is E.
Therefore, the compound will undergo elimination reaction to give an alkene( . (R)-3-methylcyclohex-1-ene ).
Answer:
Coal is a traditionally used source of energy, there are main four types of ranks for coal. Here the rank of a coal means to a natural process called Coalification, which takes place during a plant is buried and changes to a harder, and denser material and become even more rich in carbon contents.
Anthracite is know to have the highest ranked coal, it contains highest percent of fixed carbon and lowest percent of volatile material.
Option c is correct bcoz neutrons and protons exist inside nucleus whereas electrons revolve around it
hope it helped
