1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Daniel [21]
3 years ago
14

A quantity of 85.0 mL of 0.900 M HCl is mixed with 85.0 mL of 0.900 M KOH in a constant-pressure calorimeter that has a heat cap

acity of 325 J/°C. If the initial temperatures of both solutions are the same at 18.24°C, what is the final temperature of the mixed solution?
Chemistry
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

There is a 1:1 neutralization reaction,  so, number of moles:

0.085 l * 0.900 mol/ L = 0.0765 mol HCL

The heat produced:  0.0765 mol * -56.2 kJ/mol = -4.229 kJ (this is the heat of neutralization)

Change in temperature:    The mass to use in the equation Q=cmT.  

4229 J / (4.186 J/gC*170 g) = 6.042 C

Add to the initial temperature:

18.24 + 6.042 = 24.29 C°

You might be interested in
Helppppppppppp it’s due today pls help and thanks
Sergeu [11.5K]

Step 1: Evaporation

Step 1: condensation

Step 3: Sublimation

Step 4: Precipitation

Step 5: Transpiration

Step 6: Runoff

Step 7: Infiltration

7 0
2 years ago
Binigyan ang isang liham ng pasasalamat at gagawin ko rin siya ng kabutihan sa ibang pagkakataon​
anzhelika [568]

Answer:

what language do you speak?

8 0
2 years ago
This volcanic rock formed _____ from lava _____ in gas.
Evgen [1.6K]
C or a one of those hope it helps !!!!
7 0
3 years ago
Read 2 more answers
Give three examples of heterogeneous mixtures and three examples of solutions that you might use in everyday life.
beks73 [17]

Answer:

Explanation:

Heterogeneous mixtures: Milk, salt and pepper, smog, chocolate chip cookie, oil and water.

Solutions we might use everyday: Gatorade, Apple Juice, most wines and liquor, liquid detergent, coffee etc.

7 0
3 years ago
Based on the molecular formula, determine whether each compound is an alkane, alkene, or alkyne. (Assume that the hydrocarbons a
topjm [15]

Answer:

a. alkyne

b. alkane

c. alkyne

d. alkene

Explanation:

The general formula for each class of compound is given below

Alkane: C_nH_{2n+2}

Alkene: C_nH_{2n}

Alkyne: C_nH_{2n-2} (assuming single multiple bonds)

Now let us classify according to the above formulas:

a. It has two hydrogen atoms less than the two times of carbon atoms hence, it's alkyne

b. It has two hydrogen atoms more than the two times of carbon atoms hence, it's alkane

c. It has two hydrogen atoms less than the two times of carbon atoms hence, it's alkyne

d. It has hydrogen atoms two times of carbon atoms hence, it's alkene

5 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the ratio of ch3nh2 to ch3nh3cl required to create a buffer with ph = 10.28. express your answer using two significant
    6·1 answer
  • Which layer of soil in the diagram contains clay and other particles of rock but little humus ?
    10·2 answers
  • Margo draws a triangle. The lengths of the sides of the triangle are 8 inches, 15 inches, and 17 inches. Margo uses the area of
    5·1 answer
  • Cubr2 molecular or atomic
    13·1 answer
  • Please please help :/
    9·2 answers
  • Describe the structure of ammonium laurel sulfates refer to the given diagram. Your answer should include the type of bonding, t
    9·1 answer
  • It’s very confusing pls help me :)
    6·1 answer
  • 2. What are some common properties of metals, nonmetals, and semimetals?
    15·2 answers
  • Which of the following bonds is nonpolar?<br> S-CI<br> Na--C<br> Br--CI<br> C--O
    7·1 answer
  • The growth of the plants that the animal used for food could not keep up with the needs of the population. there was so little f
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!