-25.116 Kilojoules are given off when 120 grams of water are cooled from 25°C to -25°C.
Explanation:
GIVEN THAT:
mass of water = 120 grams OR 0.12 Kg
initial temperature = 25 degrees
final temperature = -25degrees
change in temperature (ΔT) = final temperature - initial temperature
-25 -25
= -50 degrees
specific heat capacity of water = 4.186 joule/gram degree Celsius
Q (heat energy transferred) = ?
Formula used,
Q = mcΔT
Putting the values in equation
Q = 120 X 4.186 X -50
= -25116 joules
The energy in joules is converted to kilo joule by dividing it with 1000.
The negative sign in the energy transfer shows that energy is released in the process.
Saturated had as much solute that it can hold, supersaturated holds more than can normally be dissolved.
One benefit of this is that the weaknesses of some of their plans are covered by better plans. Another is that if the final plan doesn’t result, there are already many other ideas to go off of. A final benefit is that if the overall plan does work, it can still be easily improvised. Hope this helps! After all, this question is more opinion based.
Tamam öğretmenim teşekkür ederiz çok güzel olmuş mu bir
The Average atomic weight of X is 28.7amu
Isotopes are atoms with the same number of protons but differing numbers of neutrons.
Different isotopes have various atomic masses.
The proportion of atoms with a particular atomic mass that can be found in a naturally occurring sample of an element is known as the relative abundance of an isotope.
An element's average atomic mass is computed as a weighted average by multiplying the relative abundances of its isotopes by their respective atomic masses, then adding the resulting products.
Using mass spectrometry, it is possible to determine the relative abundance of each isotope.
The atomic weight of the element will be a weighted average of the isotopes based on the relative abundance:
(27.730 x 0.6058) + (28.841 x 0.1835) + (31.321 x 0.2107) = 16.7988 + 5.2923+ 6.599 = 28.690 = 28.7 amu.
Average atomic weight of X is 28.7amu
Learn more about Average Atomic Weight here
brainly.com/question/6200158
#SPJ4
