One slice of bread provides you with 50 nutritional calories of energy. If a 1-1b loaf of bread contains 18 slices, how many Joules of energy are obtained by eating 1.00 g of bread? (1 nutritional calorie equals 1 kcal

and 1 cal = 4.18 J)

Given :

Energy in one slice of bread , e = 50 kcal .

A 1- lb loaf of bread contains 18 slices .

1 cal = 4.18 J .

To Find :

How many Joules of energy are obtained by eating 1.00 g of bread .

Solution :

We know , 1 lb = 0.45 kg = 450 g .

So , mass of 1 slice bread in gram is :

So , 25 g bread contains 50 kcal of energy .

Energy in 1 g of bread is :

Therefore , energy in joules is .

Hence , this is the required solution .

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

answer: mole of the gas

answer: mole of the gasexplanation: