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
valkas [14]
3 years ago
11

Indicate whether each statement is true or false.

Chemistry
1 answer:
RUDIKE [14]3 years ago
6 0

Answer: a. False.

b. True

c. False

Explanation:

a. When a solution is made, the enthalpy of mixing is always a positive number.

This is false. It should be noted that the nature of reaction determine the enthalpy which can either be positive or can be negative.

b. An increase in entropy favors mixing.

This is true because when molecules get randomly distributed, they mix with one another. Therefore, an increase in entropy favors mixing.

c. A solute will dissolve in a solvent if solute-solute interactions are stronger than solute-solvent interactions.

This is false. This is because the solute-solute interactions have to be weaker and not stronger.

You might be interested in
Aluminum reacts with oxygen to produce aluminum oxide which can be used as an adsorbent, desiccant or catalyst for organic react
pishuonlain [190]
The balance chemical equation is as follow,

                                        2 Al  +  3 O₂   →   Al₂O₃

Aluminium is the Limiting Reagent,
As,
                                107.92 g Al required  =  96 g of O₂
Then,
                          82.49 g of Al will require  =  X g of O₂
Solving for X,
                                    X  =  (82.49 g × 96 g) ÷ 107.92 g

                                    X  =  73.37 g of O₂
But,
     We are provided with 117.65 g of O₂, So, it is provided in excess and 44.28 g of it will remain unreacted.

Solving for Amount of Al₂O₃ formed,
As,
                        107.92 g of Al produced  =  203.92 g of Al₂O₃
Then,
                      82.49 g of Al will produce  =  X g of Al₂O₃
SOlving for X,
                                          X  =  (82.49 g ×  203.92 g) ÷ 107.92

                                          X  =  155.86 g of Al₂O₃
8 0
4 years ago
"what is the maximum number of moles of nickel carbonate"
Elza [17]
The maximum number of moles of Nickel Carbonate (NiCO₃) that can form during a precipitation reaction is 0.025 mol. Hope this helped and have a great day!
4 0
3 years ago
Read 2 more answers
Rewrite this to make it true: Plants use energy to carry out cellular respiration.
ANEK [815]
Energy is used by plants to carry cellular respiration.
7 0
3 years ago
Determine how many moles are present in 0.23kg of SO(2)
Rama09 [41]

Answer:

3.59 moles

Explanation:

Hopefully this helps! :)

Mark as brainliest if right!

6 0
3 years ago
If you start with 89.3 g no(g) and 28.6 g h2(g), find the theoretical yield of ammonia.
Tatiana [17]
Balanced equation: 
<span>2 NO + 5 H2 ------> 2 NH3 + 2 H2O
 </span>
<span>2 moles NO react with 5 moles H2 to produce 2 moles NH3
 </span>
<span>Molar mass of NO = 30.00 g/mol </span>
<span>86.3g NO = 86.3/30.00 = 2.877 moles of NO </span>

<span>This will require: 2.877*5 / 2 = 7.192 moles of H2 </span>

<span>Molar mass of H2 = 2 g/mol </span>
<span>25.6g H2 = 25.6/2 = 12.7 mol H2. </span>
<span>You have excess H2 means the NO is limiting </span>

<span>From the balanced equation: </span>
<span>2 moles of NO will produce 2 moles of NH3 </span>
<span>2.877 moles of NO will produce 2.877 moles of NH3 </span>

<span>Molar mass NH3 = 17g/mol </span>
<span>Mass NH3 produced = 2.877 * 17 = 48.91g 

Hence the yield is = 48.91 g ~ 49 g</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • What determines the strength of an Arrhenius base?
    10·2 answers
  • Where in the cell does the krebs cycle occur?
    14·1 answer
  • 2. Which of the following expressions is generally used for solubility? (1 point)
    12·2 answers
  • Write a brief passage describing a neutral atom of
    5·2 answers
  • What happens when you boil water?
    9·1 answer
  • research to obtain more information about where we get our fuel supply.Evaluate and communicate how technology affects the suppl
    7·1 answer
  • On Friday, a local hamburger shop sold a combined total of 364 hamburgers and cheeseburgers. The number of cheeseburgers sold wa
    9·2 answers
  • Plz answer as soon as possible!!
    5·1 answer
  • When scientists design a controlled experiment, they have to identify factors that can affect the _______ of an experiment.
    7·1 answer
  • Acid-Base Chemistry 1:Question 10
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!