Answer:
2.1 x 10^6 J
Explanation:
Long story short, just think of the units of every question and then think again which unit needs to be cancelled out inorder for you to get the one which is asked.
the formula to calculate heat energy is Q = mcT
T - change in temperature
m - mass of substance
c - specific heat capacity of substance
the change in temperature is already given but you will need to change it to kelvin inorder for it to get cancelled out with the unit under specific heat capacity which is J/k gram. Tk = Tc + 273 = 3.32 + 273.15 = 276.47K
now keep in mind that c varies from substance to substance.
in this case it is 4.18J/k.g for water.
you will also need to convert the mass from kilograms to grams so it can cancel out as well. so now let's multiply 1.82 kg by a 1000 so that we can convert it to grams. which is equivalent to 1820g
now it's all set...let's substitute the values we dag out in the Heat formula Q = mcT
=1820g x 4.18Jk.g x 276.47K = 2.1 x 10^6J
so this is out final answer for heat required to raise the temperature of water by the particularly given quantity.
peace to you.
The molecular formula tell us what elements the atoms are, and how many moles and atoms are attributed toward each element.
The molecular model tells us how the atoms/elements are bonded together.
Molecular formula : CH4
H
l
Molecular model: H -- C -- H
l
<span> H</span>
Answer:
The main role of DNA in the cell is the long-term storage of information.The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code.
Hope this helps! (:
The boiling point in ethanol is much higher than hexane due to ethanol having stronger hydrogen bond present compared to hexane. Therefore the ethanol requires more energy to break the bonds, having a higher boiling point.