Question

In: Chemistry

mass of food and holder int: 37.9g mass of food and holder final: 35.6g mass off...

mass of food and holder int: 37.9g mass of food and holder final: 35.6g mass off burnt food: 2.3g. mass of beaker 56.3g mass of beaker and water 80.6g mass of water 24.3g water temp int: 30 degrees Celsius water temp final 35 degrees Celsius. change in temp is 5 degrees Celsius. What is the heat energy gained by water ? and what is heat energy per gram? Please show work

Solutions

Expert Solution

Solution :-

Formula to calculate the amount of energy gained by water is as follows

q=m*c*delta T

q= heat , m= mass of water in gram , c= specific heat of water (4.184 J per g C) , delta T = change in temperature

lets calculate the heat gained by water

q= 24.3 g * 4.184 J per g C * 5 C

   = 508.4 J

So heat gained by water is 508.4 J

Now lets calculate the amount of heat energy per gram

Heat energy per gram = amount of heat / mass of food burnt

                                         = 508.4 J / 2.3 g

                                         = 221 J per g

So the het per gram is 221 J/g


Related Solutions

1. In each question: you place mass m on the mass holder, and released the system...
1. In each question: you place mass m on the mass holder, and released the system from rest. The system includes two pulleys and a long rod with two point masses on it. If you increase m, the mass on the mass holder, what happens to the following quantities: - a, the angular accelertion of the pulley and I, the moment of inertia of the pulleys-plus-rod system. Do they increase, decease, or remain the same? 2.  If you move the two...
*DO NOT ROUND OFF ANY ANSWER UNTILL YOUR FINAL ANSWER. ROUND YOUR FINAL ANSWER TO THE...
*DO NOT ROUND OFF ANY ANSWER UNTILL YOUR FINAL ANSWER. ROUND YOUR FINAL ANSWER TO THE NEAREST WHOLE DOLLAR* Present value of an ordinary annuity periods       3          5          9         10 4%               2.77    4.45    7.43    8.11 8%               2.57    3.99    6.25    6.71 On april 1,2020, ABC company rendered services to jones company in exchange for 3 year $400000 ,8% note. Payments of P&I (principal & interest) are due each april 1st, with the first payment due immediately. December 31st is the fiscal...
Trial 1: Initial mass: 3.4g, final mass: 3.2g, change in mass: 0.2g. Joules absorbed by water:...
Trial 1: Initial mass: 3.4g, final mass: 3.2g, change in mass: 0.2g. Joules absorbed by water: 3012.5J Trial 2: Initial mass: 4.1g, final mass: 3.9g, change in mass: 0.2g. Joules absorbed by water: 3,765.6J 1. Given the energy absorbed by the water and the change in smaple mass, determine the energy content in Joules/gram for each sample 2. Convert the two values determined in #2 to energy content in terms of calories/gram. Note: There are 4,186 J in one food...
The table shows the mass of fibres in 100 grams of each food item below. Food...
The table shows the mass of fibres in 100 grams of each food item below. Food Mass of fibre (grams per 100 grams) Beans                              3.6 Bread                  2.4 Soup                  0.7 Cornflakes                  2.5 Pasta                  3.0       A small tin of beans contains 200 grams. If you are going to eat two-thirds (2/3) of this small tin of beans, how much fibres will you consume? Show your calculations. List TWO functions of fibres in the diet. What is...
What makes a Holder in Due Course magical as compared to an ordinary holder? How does...
What makes a Holder in Due Course magical as compared to an ordinary holder? How does one qualify as a HDC?? When is a check deemed "overdue"? What is the shelter principle?
A baseball has a mass of 3kg and is thrown off a roof with a horizontal...
A baseball has a mass of 3kg and is thrown off a roof with a horizontal velocity of 55m/s with a drag coefficient of 33Ns/m. The baseball falls for 5s before hitting the ground, what the horizontal and vertical velocity? How far did the ball travel both vertically and horizontally? If the bat was thrown off the roof with a horizontal velocity of 13m/s and has a mass of 15kg, what is the bats drag coefficient if it take’s 5s...
You just got off the phone with your boss, and boy was he mad. The final...
You just got off the phone with your boss, and boy was he mad. The final numbers just came in for the year, and you went over your budget by over 6%. As Director of Operations, you oversee most of the production departments at the Whispering Phone Book. Your budget covers production, distribution, and operations. Your boss wouldn’t listen when you tried to explain that the overage was not all your fault, and in fact, was not all bad. You...
A morsel of food with a mass of 3.4 g is injected into the esophagus with...
A morsel of food with a mass of 3.4 g is injected into the esophagus with an initial speed of 2.7 cm/s. On the way down to the stomach, the walls of the esophagus exert an upward resistive force of 2.7 ✕ 10-3 N on the morsel. If the esophagus is 18.0 cm long, with what speed does the morsel of food enter the stomach? m/s
int compare_and_swap(int *value, int expected, int new_value) { int temp = *value; if ( *value ==...
int compare_and_swap(int *value, int expected, int new_value) { int temp = *value; if ( *value == expected ) *value = new_value; return temp; } Suppose that a machine has an atomic compare_and_swap() instruction that sets the value to new_value only if the expression ( *value == expected ) is true. Regardless, compare_and_swap() always returns the original value of the variable value. Using the compare__and_swap() instruction, give a mutual-exclusion solution to the n-process critical section problem. Use only the shared variable...
Write a Haskell function combine :: Int -> Int -> Int -> Int with the following...
Write a Haskell function combine :: Int -> Int -> Int -> Int with the following behavior: • When x, y, and z all correspond to digit values (i.e., integers between 0 and 9, inclusive), combine x y z returns the integer given by the sequence of digits x y z. (That is, x is treated as the digit in the hundreds place, y is treated as the digit in the tens place, and z is treated as the digit...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT