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Question 1 0/2 pts How much heat is needed in Joules to warm 325 mL of...
How much heat is required to warm to 0 degrees C and then melt a 100ml...
How much heat is required to warm to 0 degrees C and then melt a 100ml block of ice( at 20 degrees C) that is 100ml in volume? Density of ice is 0.92 g/ml. DeltaHfus=6.01 kJ/mol. DeltaHvap=44kj/mol. Heat capacity of ice= 2.09 j/g C. Heat capacity of water= 4.184 J/g C.
a) how many joules are needed to heat up 325 grams of water from 25.1 degrees c to 43.8 degrees c? how many calories? b)...
a) how many joules are needed to heat up 325 grams of water from 25.1 degrees c to 43.8 degrees c? how many calories? b) how many joules are needed to heat up 325 grams of aluminum from 25.1 degrees c to 89.5 degrees c? how many calories? the c for aluminum is = 0.897 j/g degrees c
please please answer all question 17. How many JOULES of energy are needed to warm 4.37...
please please answer all question
17. How many JOULES of energy are needed to warm 4.37 g of silver (Ag) from 25.0 c to 27.5 C? The specific heat of silver is 0.24c a. 0.14J b. 2.6 c. 46 J d. 0.022 18. Given the table below of specific heat capacities, which one will experience the SMALLEST increase in temperature if 10.0 J of heat is added to 1.00 g of each of these substances? Water Cast iron Lead (Pb)...
Homework Name: 1) How much heat, in joules, must be added to a 75.0-g iron block...
Homework Name: 1) How much heat, in joules, must be added to a 75.0-g iron block with a specific heat of 0.449 J/g °C to increase its temperature from 25 °C to its melting temperature of 1535 °C? 2) A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2 °C to 89.6 °C. What is the specific heat of the substance? 3) A 70.0-g piece of metal at 80.0 °C is placed...
Question 9 2 pts Ch 15:33 How many Joules of heat are required to raise the...
Question 9 2 pts Ch 15:33 How many Joules of heat are required to raise the temperature of 0.7 kg of water by 22 °C? HINT: Use the equation AT Q. The specific heat capacity of water J is c = 4190 сть kg C
QUESTION 2 The specific heat of lead is 0.11 yg-C. How much heat is given off by lead with a mass of 85 g to decrea...
QUESTION 2 The specific heat of lead is 0.11 yg-C. How much heat is given off by lead with a mass of 85 g to decrease its temperature from 200 °C to 10°C a -0.0071J b.0.0071 Oc 1776.5 d.-1776.5 QUESTION 3 A 55.0-g sample of hot metal initially at 99.5°C was added to 40.0 g of water in a Styrofoam coffee cup calorimeter. The water and calorimeter were initially at 21.0°C. If the final temperature of mixture was 30.50C, calculate...
30. How much heat energy, in joules, is required to raise the temperature of 1 mole of sulfur from 100. to 500.°C? S...
30. How much heat energy, in joules, is required to raise the temperature of 1 mole of sulfur from 100. to 500.°C? Specific heat for sulfur is 0.705 J/g-°C. a. 280 b. 1.28 X 104 c. 9.04 X 103 d. 22.6 e. 567 31. What is the final temperature, in °C, when 60.0 g of water at 80°C is mixed with 40.0 g of water at 25°C? The specific heat of water is 4.184 J/g-°C. a. 53 b. 58 c....
Please help with each one 2. (20 pts.) Calculate the specific heat of a piece of...
Please help with each one
2. (20 pts.) Calculate the specific heat of a piece of metal if its mass is 25.52 grams and the metal gives off 1551 Joules of heat when cooled to 20 °C from an initial temperature of 85 °C. c.) 0.440J d.) 0.940 J c.) d.) 0.450 g 0.940 J/g °C . (15 pt.) From your Question #5 result, identify the metal using the following table: Metal ΑΙ Fe Hg Bi Cu Pb Specific Heat...
QUESTION 1 Heat is required to dissolve NaOH(s) in water. A-True B-False -------------------- QUESTiON 2 The...
QUESTION 1 Heat is required to dissolve NaOH(s) in water. A-True B-False -------------------- QUESTiON 2 The below equation represents an exothermic reaction: Reactants + delta H ----> product ATrue B-False -------------------- QUESTION 3 The Styrofoam cup was used as an insulated device that allows heat loss A-True B-False -------------------- QUESTION 4 The following is an endothermic reaction; NaOH+ HCI------> NaCl+H2O+42.12KJ A-True B-False -------------------- QUESTION 5 NaOH(s)---> Na^+(aq)+CH^-(aq)+44.02kJ Calculate the amount (in moles) of NaOH needed to make the reaction above...
inMACII Page 1: Question 4 (1 point) 2 3 1 The aluminum cup inside your calorimeter...
inMACII Page 1: Question 4 (1 point) 2 3 1 The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid solution and 50.03 g of 1.0 M sodium hydroxide solution to the calorimeter. Both solutions have an initial temperature of 19.9 °C, and the final 5 4 temperature after addition is 26.8 °C. What is the molar enthalpy of neutralization, in units of kJ/mol? Assume that: the calorimeter is completely insulated the...
please please answer all question
17. How many JOULES of energy are needed to warm 4.37 g of silver (Ag) from 25.0 c to 27.5 C? The specific heat of silver is 0.24c a. 0.14J b. 2.6 c. 46 J d. 0.022 18. Given the table below of specific heat capacities, which one will experience the SMALLEST increase in temperature if 10.0 J of heat is added to 1.00 g of each of these substances? Water Cast iron Lead (Pb)...
Homework Name: 1) How much heat, in joules, must be added to a 75.0-g iron block with a specific heat of 0.449 J/g °C to increase its temperature from 25 °C to its melting temperature of 1535 °C? 2) A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2 °C to 89.6 °C. What is the specific heat of the substance? 3) A 70.0-g piece of metal at 80.0 °C is placed...
Question 9 2 pts Ch 15:33 How many Joules of heat are required to raise the temperature of 0.7 kg of water by 22 °C? HINT: Use the equation AT Q. The specific heat capacity of water J is c = 4190 сть kg C
QUESTION 2 The specific heat of lead is 0.11 yg-C. How much heat is given off by lead with a mass of 85 g to decrease its temperature from 200 °C to 10°C a -0.0071J b.0.0071 Oc 1776.5 d.-1776.5 QUESTION 3 A 55.0-g sample of hot metal initially at 99.5°C was added to 40.0 g of water in a Styrofoam coffee cup calorimeter. The water and calorimeter were initially at 21.0°C. If the final temperature of mixture was 30.50C, calculate...
30. How much heat energy, in joules, is required to raise the temperature of 1 mole of sulfur from 100. to 500.°C? Specific heat for sulfur is 0.705 J/g-°C. a. 280 b. 1.28 X 104 c. 9.04 X 103 d. 22.6 e. 567 31. What is the final temperature, in °C, when 60.0 g of water at 80°C is mixed with 40.0 g of water at 25°C? The specific heat of water is 4.184 J/g-°C. a. 53 b. 58 c....
Please help with each one
2. (20 pts.) Calculate the specific heat of a piece of metal if its mass is 25.52 grams and the metal gives off 1551 Joules of heat when cooled to 20 °C from an initial temperature of 85 °C. c.) 0.440J d.) 0.940 J c.) d.) 0.450 g 0.940 J/g °C . (15 pt.) From your Question #5 result, identify the metal using the following table: Metal ΑΙ Fe Hg Bi Cu Pb Specific Heat...
inMACII Page 1: Question 4 (1 point) 2 3 1 The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid solution and 50.03 g of 1.0 M sodium hydroxide solution to the calorimeter. Both solutions have an initial temperature of 19.9 °C, and the final 5 4 temperature after addition is 26.8 °C. What is the molar enthalpy of neutralization, in units of kJ/mol? Assume that: the calorimeter is completely insulated the...
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