-2.5089 kJ is the amount of heat is released by the combustion of the naphthalene.
<h3>How we calculate the released heat?</h3>
Released amount of heat is calculated by using the below formula:
Q = -mcΔT, where
m = mass of naphthalene = 0.25g
c = specific heat of calorimeter = 4.13 kJ/°C
ΔT = change in temperature = 26.43°C - 24°C = 2.43°C
Putting all these values in the above equation, we get
Q = - (0.25 × 4.13 × 2.43) = - 2.5089 kJ
Hence, - 2.5089 kJ heat is released.
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All matter is made up of substances called elements, which have specific chemical and physical properties and cannot be broken down into other substances through ordinary chemical reactions. Gold, for instance, is an element, and so is carbon. There are 118 elements, but only 92 occur naturally.
<h3>
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Answer:
2 ?
Explanation:
(Molar mass of S2Cl2 = 135.036 g/mol)
Eq. wt. of S in S2
Cl
2
= 2×35.5
2×32×35.5 =32g
Eq. wt. of S in SCl
2 =
2×35.5
32×35.5 =16g
So, their ratio is 2.
A. Chemical engineers
hope it helped
As you travel up the air pressure decrease, so then the amount of oxygen you use to breathe also decreases