Hess' Law can best be described as A. <span>Heat evolved in a given process can be expressed as the sum of the heats of several processes that, when added, yield the process of interest. </span>
They have 6 electron in their outer orbital. That means they want 2 electrons to be stable. Since metals have the tendency to give electron oxygen receives 2 electrons. The answer is -2
I believe you do 151.7= 4.18x (4.70) because you use the formula q=mcat
Answer:
B
Explanation:
962,320 J
230 nutritional Calories in Joules is 962,320 J
Answer: 0.028 grams
Explanation:
Depression in freezing point :
Formula used for lowering in freezing point is,
or,
where,
= change in freezing point
= freezing point constant (for benzene} =
m = molality
Putting in the values we get:
0.028 grams of DDT (solute) must be dissolved in 209.0 grams of benzene to reduce the freezing point by 0.400°C.
