Solve each of the following. Complete for homework. 1. The specific heat of etha

Question

Solve each of the following. Complete for homework.    1. The specific heat of ethanol is 2.46 J/gC. Ethanol boils at 78.3 must be added to 50.0 g. of the substance at room temperature to raise it to its boiling point? Solve below or on the reverse side of this page. 2. The specific heat of copper is 0.358 J/goC. 25.0 g. of Cu is heated to 100 and then placed into H2O at 10oC. When the temperature of the water is measured at temperature equilibrium, it is 20oC. What is the mass of the water? Solve below or on the reverse side of this page. 3. If the specific heat of water is 4.19 J/goC, how much heat is needed to raise the temperature of 18.0 g. of water 1oC? Solve below or on the reverse side of this page.
3. Balance the following three reactions: Calcium oxide reacts with water _______________________________________________________________________ magnesium hydroxide reacts with hydrochloric acid acid _________________________________________________________________ potassium reacts with water __________________________________ Solve each of the following. Complete for homework.    1. The specific heat of ethanol is 2.46 J/gC. Ethanol boils at 78.3 must be added to 50.0 g. of the substance at room temperature to raise it to its boiling point? Solve below or on the reverse side of this page. 2. The specific heat of copper is 0.358 J/goC. 25.0 g. of Cu is heated to 100 and then placed into H2O at 10oC. When the temperature of the water is measured at temperature equilibrium, it is 20oC. What is the mass of the water? Solve below or on the reverse side of this page. 3. If the specific heat of water is 4.19 J/goC, how much heat is needed to raise the temperature of 18.0 g. of water 1oC? Solve below or on the reverse side of this page.
3. Balance the following three reactions: Calcium oxide reacts with water _______________________________________________________________________ magnesium hydroxide reacts with hydrochloric acid acid _________________________________________________________________ potassium reacts with water __________________________________ Solve each of the following. Complete for homework.    1. The specific heat of ethanol is 2.46 J/gC. Ethanol boils at 78.3 must be added to 50.0 g. of the substance at room temperature to raise it to its boiling point? Solve below or on the reverse side of this page. 2. The specific heat of copper is 0.358 J/goC. 25.0 g. of Cu is heated to 100 and then placed into H2O at 10oC. When the temperature of the water is measured at temperature equilibrium, it is 20oC. What is the mass of the water? Solve below or on the reverse side of this page. 3. If the specific heat of water is 4.19 J/goC, how much heat is needed to raise the temperature of 18.0 g. of water 1oC? Solve below or on the reverse side of this page.
3. Balance the following three reactions: Calcium oxide reacts with water _______________________________________________________________________ magnesium hydroxide reacts with hydrochloric acid acid _________________________________________________________________ potassium reacts with water __________________________________

Explanation / Answer

1.

Q = m*Cp*DT = 50*2.46*(78.3-25) = 6555.9J

2.

Cow=4.19J/(g*C)

Mc*Cpc*(100-10) = Mw*Cpw*(20-10)

25*0.358*90=Mw*4.19*10

Mw = 19.22g

3.

Q = 18*4.19*1= 75.42J

4. Balance the following three reactions:

Calcium oxide reacts with water

CaO + H2O = Ca(OH)2

magnesium hydroxide reacts with hydrochloric acid acid

Mg(OH)2 + 2HCl = MgCl2 + 2H2O

potassium reacts with water

2K + 2H2O = 2KOH + H2

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.