Answer: Option (C) is the correct answer.
Explanation:
Le Chatelier's principle states that when a system is in equilibrium then any change in the reaction will shift the equilibrium in a direction which is opposing the change.
So, in the given exothermic reaction when we decrease the temperature then there will be increase in production of water and NaCl.
As a result, water will evaporate at a faster rate.
Hence, we can conclude that for the given equation if the temperature is decreased then the water (H2O) will begin rapidly evaporating.
Grams to moles to atoms
(41.6)g/(1 )×(1mol)/(87)g×(6.022×10^23)atoms/(1mol)
the 87 comes from the periodic table Sr has 87 as atomic weight
grams cancel then moles cancel and you are left with atoms
=2.87×10^23atoms
with all numbers it is 2.8794851×10^23atoms
Answer:
Relative error = 0.35
observed value = 8.775
Explanation:
given data:
Actual value = 13.5 L
Percentage of error=35%
Relative error can be determined as follow:
Absolute error = actual value - observed value
Percentage of error
Then relative error
Relative error
Then absolute error =
Therefore experimental measurement value(observed value)
= actual value - absolute error
=13.5 - 4.725 = 8.775
Answer:
Diamond is burnt
Diamond (Carbon)+ Oxygen → CO2
Water electrolysed
2H2O → 2H2 + O2
Explanation:
Dalton atomic theory states that in a chemical reaction, the atoms of the elements join together or combine in simple whole number ratios
Hence when, at very high temperatures, diamond which consists of carbon is burnt we have
Diamond (Carbon)+ Oxygen → CO2
Also when water is electrolysed it decomposes as follows
2H2O → 2H2 + O2
Desertification:Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid.
Deforestation: the action of clearing a wide area of trees.
Climate change: Climate change describes a change in the average conditions — such as temperature and rainfall — in a region over a long period of time. NASA scientists have observed Earth's surface is warming, and many of the warmest years on record have happened in the past 20 years.
Extinction:
the state or process of being or becoming extinct.