(#3) How much heat energy is released by dissolving 10.0 g of CaCl2 in 100.0 mL of water?. Use formula q=mcAT. The specific heat of water is 4.184J/g C, and the density os water is 1.00 g/mL.
Homework Answers
Add Answer to:
(#3) How much heat energy is released by dissolving 10.0 g of
CaCl2 in 100.0 mL...
(#5) How much heat is absorbed by dissolving 10.0 g of NaNO3 in 100.0 mL of...
(#5)
How much heat is absorbed by dissolving 10.0 g of NaNO3 in 100.0
mL of water?
Open the Endothermic and Exothermic Reactions Lab Activity (Section 6.5, Figure 6.9) to complete this worksheet. 1. Measure the temperature change after dissolving a 5 g sample of each substance in 100 mL of water. Determine which solutes have an exothermic dissolving process, and which have an endothermic dissolving process. Naci NaOH NaNO3 CaCl2 KOH NH4NO3 Temperature change (°C) 1-0.79 13.30 -2.88 |...
specific heat capacity 2. If 3.8 g of calcium chloride (CaCl2) is dissolved in 100.0 mL...
specific heat capacity
2. If 3.8 g of calcium chloride (CaCl2) is dissolved in 100.0 mL of water, the following data are collected: starting temperature is 25.8 °C, final temperature after dissolving is 29.9 °C. Calculate the enthalpy of solution in Joules. You may assume a density of 1.00 g/mL for the solution and you may assume that the specific heat is that of water (this is a dilute solution) and is 4.18 J/(gx°C). Is this an endothermic or exothermic...
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is...
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is required to raise the temperature of 1 gram of a substance by 1 kelvin. q= - m x Cp X AT q=heat lost or gained, m= mass of solution (grams) Cp = the Specific Heat Capacity of a compound (J/g x °C)) AT = Tfinal-Tinitial AHsolution = 9 moles of salt 1. If 1.25 g of ammonium nitrate (NH4NO3) is dissolved in 25.0 mL...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat was added? Assume the density of water is 1.00 g/mL and the specific heat capacity of the water is 4.184 J/g°C. Include units and use the correct number of significant figures. Define the terms "exothermic" and "endothermic". What is the sign of AH associated with these two terms? Exothermic: Endothermic
0.50 g of calcium chloride (CaCl2) was added to a test tube holding 5 mL of...
0.50 g of calcium chloride (CaCl2) was added to a test tube holding 5 mL of distilled water. A temperature probe was placed in the test tube to record any change in temperature during the reaction. The baseline temperature of the water before adding the CaCl2 was 23.6 degrees Celsius. After the CaCl2 was added to the water the temperature of the solution peaked at 25.7 degrees Celsius. 1) Draw an energy diagram of the process and label the Energy...
A student masses 5.34 g of NH4Cl, and adds it to a calorimeter containing 100.0 mL...
A student masses 5.34 g of NH4Cl, and adds it to a calorimeter containing 100.0 mL of water at 21.0 oC. As the salt dissolves, the temperature drops to 17.6 oC. Calculate the ΔHsol of ammonium chloride in kJ/mol. Is the process endothermic or exothermic? Explain. Density of water 1.00g/mL. Specific heat of water = 4.184 J/g oC
Dissolving 5.57 g of CaCl2 in enough water to make 288 mL of solution causes the temperature of the solution to increase...
Dissolving 5.57 g of CaCl2 in enough water to make 288 mL of solution causes the temperature of the solution to increase by 3.77 oC. Assume the specific heat of the solution and density of the solution are the same as water′s (about 4.18 J/goC and 1.00 g/cm3, respectively) Calculate ΔH per mole of CaCl2 (in kJ) for the reaction under the above conditions. Hint given in feedback Aside, the ΔH per mole for dilution depends on the process. For...
10. Given the thermochemical data below, what is the change in enthalpy when 10.0 g of...
10. Given the thermochemical data below, what is the change in enthalpy when 10.0 g of H, are reacted? N; (g) + 3H2(g) → 2NH, (g): AH = -91.2 kJ (A) -452 kJ (B) +452 kJ (C) -151 kJ (D) -1357 kJ 11. Which of the following is NOT a state function? 1. Heat 2. Change in enthalpy 3. Change in internal energy 4. Change in pressure (A) 1 only (B) 2 only (C) 2 and 3 (D) 1 and...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperature of the liquid stays at 24 °C for 10 minutes. why would you not want to sell a cold pack made with compound X? 3) Consider a beaker of water that has an initial temperature of 25 °C. When an ionic salt is dissolved in the water, the temperature changes to 5 °C. a. (1 pt) If...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperatu...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperature of the liquid stays at 24 °C for 10 minutes. Why would you not want to sell a cold pack made with compound X? 3) Consider a beaker of water that has an initial temperature of 25 °C. When an ionic salt is dissolved in the water, the temperature changes to 5 °C. a. (1 pt) If...
(#5)
How much heat is absorbed by dissolving 10.0 g of NaNO3 in 100.0
mL of water?
Open the Endothermic and Exothermic Reactions Lab Activity (Section 6.5, Figure 6.9) to complete this worksheet. 1. Measure the temperature change after dissolving a 5 g sample of each substance in 100 mL of water. Determine which solutes have an exothermic dissolving process, and which have an endothermic dissolving process. Naci NaOH NaNO3 CaCl2 KOH NH4NO3 Temperature change (°C) 1-0.79 13.30 -2.88 |...
specific heat capacity
2. If 3.8 g of calcium chloride (CaCl2) is dissolved in 100.0 mL of water, the following data are collected: starting temperature is 25.8 °C, final temperature after dissolving is 29.9 °C. Calculate the enthalpy of solution in Joules. You may assume a density of 1.00 g/mL for the solution and you may assume that the specific heat is that of water (this is a dilute solution) and is 4.18 J/(gx°C). Is this an endothermic or exothermic...
LAB 10 PRE LAB WORKSHEET Specific Heat Capacity (C) The energy transferred as heat that is required to raise the temperature of 1 gram of a substance by 1 kelvin. q= - m x Cp X AT q=heat lost or gained, m= mass of solution (grams) Cp = the Specific Heat Capacity of a compound (J/g x °C)) AT = Tfinal-Tinitial AHsolution = 9 moles of salt 1. If 1.25 g of ammonium nitrate (NH4NO3) is dissolved in 25.0 mL...
If the temperature of 100.0 mL of water rises from 25.0°C to 32.0°C, how much heat was added? Assume the density of water is 1.00 g/mL and the specific heat capacity of the water is 4.184 J/g°C. Include units and use the correct number of significant figures. Define the terms "exothermic" and "endothermic". What is the sign of AH associated with these two terms? Exothermic: Endothermic
10. Given the thermochemical data below, what is the change in enthalpy when 10.0 g of H, are reacted? N; (g) + 3H2(g) → 2NH, (g): AH = -91.2 kJ (A) -452 kJ (B) +452 kJ (C) -151 kJ (D) -1357 kJ 11. Which of the following is NOT a state function? 1. Heat 2. Change in enthalpy 3. Change in internal energy 4. Change in pressure (A) 1 only (B) 2 only (C) 2 and 3 (D) 1 and...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperature of the liquid stays at 24 °C for 10 minutes. why would you not want to sell a cold pack made with compound X? 3) Consider a beaker of water that has an initial temperature of 25 °C. When an ionic salt is dissolved in the water, the temperature changes to 5 °C. a. (1 pt) If...
2) (2 pts) If you dissolve 10.0 g of compound X in 100.0 mL of distilled water, the liquid turns red. The temperature of the liquid stays at 24 °C for 10 minutes. Why would you not want to sell a cold pack made with compound X? 3) Consider a beaker of water that has an initial temperature of 25 °C. When an ionic salt is dissolved in the water, the temperature changes to 5 °C. a. (1 pt) If...
Most questions answered within 3 hours.
-
in
2011, real gdp in the united states was below potential gdp. This
fact definitely means...
asked 40 seconds ago -
Describe how the file manager allocates a file to a single user.
List the steps that...
asked 24 minutes ago -
For the following reaction:
IBr(g) + 4F2(g) → IF5(g) +
BrF3(g)
Compound
ΔH°f (kJ mol-1)...
asked 25 minutes ago -
Assuming the simple probability of even A is given as P(A) and
the simple probability of...
asked 28 minutes ago -
2.- It is known that 20% of the students on campus are smokers.
If 8 students...
asked 28 minutes ago -
Provide a summary/reflection of what you gleaned of how law
enforcement is effect by Unconventional Weapons...
asked 49 minutes ago -
From the following heats of combustion,
CH3OH(l) + 3/2O2(g) → CO2(g) +
2H2O(l)
ΔHorxn = –726.4...
asked 43 minutes ago -
Floating Point Representation
Consider a computer that stores information using 10 bits words.
The first bit...
asked 1 hour ago -
. The theoretical weight percent of carbon in (CH3)3N is:
A. 20.32% B. 81.95% C. 9.97%...
asked 1 hour ago -
The rate of a certain reaction is given by the following rate
law:
rate = k[H2][I2]...
asked 59 minutes ago -
A 10,000 uF capacitor is in series with a 1 uH inductor. What is
Zeq of...
asked 1 hour ago -
Draw the molecular orbital diagram for O2-
(oxygen molecule with a negative charge).
asked 1 hour ago