Answer:
ΔEN CO = 1.0
Explanation:
To calculate the electronegativity difference, we have to substract the element which has the highest EN to the other, that has a low value.
For this case EN from O - EN from C
Electronegativity is a property of the periodic table that increases diagonally, where Fr and Rb are the elements of less EN while F is the most electronegative element, with a value of 4. This is because F is an element with a high ionization energy and a negative electronic affinity.
ΔEN CO = 3.5 - 2.5 = 1.0
Electronegativity (EN) describes the ability of an atom to compete for
electrons with other atoms to which it is attached.
Answer:
Explanation:
we know that specific heat is the amount of heat required to raise the temperature of substance by one degree mathmeticaly
Q=mcΔT
ΔT=T2-T1
ΔT=26.8-10.2=16.6
C for water is 4.184
therefore
Q=1.00*4.184*16.6
Q=69.4 j
now we have to covert joule into calorie
1 calorie =4.2 j
x calorie=69.4 j/2
so 69.4 j =34.7 calorie thats why 34.7 calorie heat is required to raise the temperature of water from 10.2 to 26.8 degree celsius
Answer:
7.5 % of Ag
Explanation:
Total mass of sterling silver chain is:
Mass of silver + Mass of copper
33.3 g Ag + 2.70g of Cu = 36 g
% of Silver is (mass of silver / total mass) . 100 →
(2.70 g / 36 g) . 100 → 7.5%
