Diatomic<span> molecules are molecules composed of only two atoms, of the same or different chemical </span>elements<span>.</span>
Given that the mass of coffee in the cup = 140 g
Final temperature =
Initial temperature =
Let us assume the specific heat of coffee is equal to that of water = 4.184
Temperature change = T(final) - T(initial) = (20 - 75 )
=- 55
-Heat given out by coffee = heat absorbed by the surroundings
Heat released into the surroundings =-()
=
= 32,217 J
Weather is the day-to-day state of the atmosphere, and its short-term variation in minutes to weeks. People generally think of weather as the combination of temperature, humidity, precipitation, cloudiness, visibility, and wind. Climate is the weather of a place averaged over a period of time, often 30 years.
Weather definitely influences climate because the climate is based on the weather. So if the weather over a long period of time(30 years) increases or decreases, the climate will increase or decrease. Then, the climate has changed
Answer:
A fractional distillation with a dehydrant
Answer:
The empirical formula of this question is :
C.
Explanation:
The empirical formula is the simplest whole number ratio of elements in the chemical formula of the molecule.
It is calculated using:
n = The common factor
The Molecular formula represents the exact composition of the elements in the compound.
For example :
Molecular formula : C4H8O2
<em>Find the common factor n ?</em>
<em>here , 2 is common factor(which is divisible by 4 ,8,2)</em>
divide each element by 2
generally 1 is not written
C2H4O is the empirical formula
In this question , the molecular formula C40H56
n = common factor = 8(It is divisible by 40 , 56 )
So, correct option is<u> C</u>