ZuoTi.Pro
Question







MgO(s) + 2HCl(aq) → 2Cl(aq) + Mg(aq) + H2O(l): AH = A student added 0.250 g of MgO(s) to 45.0 mL HCI@ 22.0C. The temp of the

Specific heat = 4.18 J/g*C
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Number of moles of Mgo = mass/mol.wt. = 0.250 g/(40.30 g/mol) = 0.006203 mol Mass of HCl = volume * density = 45.0 mL * 1.05

0 0
Add a comment
Know the answer?
Add Answer to:
Specific heat = 4.18 J/g*C MgO(s) + 2HCl(aq) → 2Cl(aq) + Mg(aq) + H2O(l): AH = A student added 0.250 g of Mg...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A student weighs out 0.975 g of magnesium oxide (MgO, MM = 40.31 g/mol) and adds...

    A student weighs out 0.975 g of magnesium oxide (MgO, MM = 40.31 g/mol) and adds it to a constant pressure calorimeter containing 100.0 mL of 0.600 M HCl at 22.1°C. After the reaction stopped, the temperature of the solution inside the calorimeter was 25.2°C. Calculate the ∆H (in kJ) for the reaction. Assume the specific heat of the solution is 4.18 J/g°C and the density of the solution is 1.00 g/ml. MgO (s) + HCl (aq) → MgCl2 (aq)...

  • You want to determine AH for the reaction Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) To...

    You want to determine AH for the reaction Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) To do so, you first determine the heat capacity of a calorimeter using the following reaction, whose AH is known: NaOH(aq) + HCl(aq) + NaCl(aq) + H2O(1) -57.32 kJ (a) Calculate the heat capacity of the calorimeter from these data: Amounts used: 50.0 mL of 2.00 M HCl and 50.0 mL of 2.00 M NaOH Initial T of both solutions: 16.9°C Maximum T recorded during...

  • The average ΔHrxn for MgO (s) + 2 HCl (aq) --> MgCl2(aq) + H2O (l) is...

    The average ΔHrxn for MgO (s) + 2 HCl (aq) --> MgCl2(aq) + H2O (l) is -150. kJ/mol What would be the ΔHrxn for the following reaction: MgCl2(aq) + H2O (l) --> MgO (s) + 2HCl (aq) Group of answer choices +300. kJ/mol -150. kJ/mol +150. kJ/mol +75.0 kJ/mol 2. The average ΔHrxn for Mg (s) + 2 HCl (aq) --> MgCl2(aq) + H2(g) is -466 kJ/mol What would be the ΔHrxnfor the following reaction: 2 MgCl2(aq) + 2 H2(g)...

  • Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself...

    Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction. Part A Assuming that the specific heat of the solution is 4.18 J/(g . C) and that the calorimeter itself absorbs a negligible amount of heat, calculate AH in kilojoules for the reaction K2O(8)+H20()-2KOH(aq) ανα ΑΣφ ? ΔΗ - kJ Request Answer Submit Provide Feedback Next> Constants Periodic Tab When 1.045...

  • Using the Hess Law and the thermochemical equations below,      MgO(s)   +   + 2HCl(aq)   ------> MgCl2(g)  ...

    Using the Hess Law and the thermochemical equations below,      MgO(s)   +   + 2HCl(aq)   ------> MgCl2(g)   + H2O(l)         ΔHrxn = -111.7 kJ/mol            Mg(s)    + 2 HCl(aq)     ------>      MgCl2(g)   + H2(g)         ΔHrxn = -548.3 kJ/mol      H2(g)    + 1/2 O2(g)     ------>      H2O(l)          ΔHrxn = -142.9 kJ/mol find the heat of reaction of the following: (0.25 pt.)          Mg(s)    + 1/2 O2(g)     ------>      MgO(g)      ΔHrxn =   ? b) If the theoretical enthalpy of this reaction is -602 kJ/mol,...

  • a) Using the Hess Law and the thermochemical equations below,      MgO(s)   +   + 2HCl(aq)   ------>...

    a) Using the Hess Law and the thermochemical equations below,      MgO(s)   +   + 2HCl(aq)   ------> MgCl2(g)   + H2O(l)         ΔHrxn = -111.7 kJ/mol            Mg(s)    + 2 HCl(aq)     ------>      MgCl2(g)   + H2(g)         ΔHrxn = -548.3 kJ/mol      H2(g)    + 1/2 O2(g)     ------>      H2O(l)          ΔHrxn = -142.9 kJ/mol find the heat of reaction of the following:            Mg(s)    + 1/2 O2(g)     ------>      MgO(g)      ΔHrxn =   ? b) If the theoretical enthalpy of this reaction is -602 kJ/mol, calculate the percent error

  • Identify the limiting reactant of the reaction: MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g) 25.0mL HCL...

    Identify the limiting reactant of the reaction: MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g) 25.0mL HCL 0.25g MgO

  • What is the correct overall reaction (combustion of magnesium)? MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g)

    What is the correct overall reaction (combustion of magnesium)? MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(g)

  • Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)?ZnCl2(aq)+H2(g) When 0.112 g...

    Zinc metal reacts with hydrochloric acid according to the following balanced equation. Zn(s)+2HCl(aq)?ZnCl2(aq)+H2(g) When 0.112 g of Zn(s) is combined with enough HCl to make 54.9 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.7 ?C to 23.9 ?C. Find ?Hrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g??C as the specific heat capacity.) Answer should be in kJ/mol.

  • Using the equation: Mg(s) + 2HCl(aq) ———> H2(g) + MgCl2(aq), complete the worksheet. Prelab Questions ....

    Using the equation: Mg(s) + 2HCl(aq) ———> H2(g) + MgCl2(aq), complete the worksheet. Prelab Questions . A student following the procedures in this lab exercise collected the following data: mass Mg, g 0.0243 initial syringe volume, mi 0.8 final syringe volume, ml 26.3 barometric pressure, tor 748 temperature, K 293.5 Calculate the value of the universal gas constant, R. 2. What would be the volume of hydrogen gas produced by the reaction of 0.100 g of magnesium metal, collected at...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT