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
oee [108]
3 years ago
6

Choose the INCORRECT statement. A. Temperatures of two bodies are equal when the average kinetic energies of the two bodies beco

me the same. B. The heat capacity is the quantity of heat required to change the temperature of the system by one degree. C. The specific heat is the heat capacity for one mole of substance. D. Most metals have low specific heats, as metals can be heated quickly. E. The law of conservation of energy can be written: qsystem qsurroundings
Chemistry
1 answer:
liq [111]3 years ago
8 0

Answer:

Option C

The specific heat is the heat capacity for one mole of a substance.

Explanation:

The incorrect statement is  <em>The specific heat is the heat capacity for one mole of a substance.</em>

This is because the specific heat capacity is the amount of heat required to raise the temperature of 1 gramme of a substance by 1 degree Celcius.

Note that the unit in question here for the specific heat capacity of the substance is in grammes.

The definition given in the options is actually for the molar heat capacity of the substance, not the specific heat capacity.

You might be interested in
Lori’s family is on a road trip. They split their drive into the five legs listed in the table. Find the average velocity for ea
lilavasa [31]

Answer:

The answer is E,B,A,C,D

7 0
2 years ago
True or false: when a catalyst is added to a chemical reaction the particles collide with more energy
Stella [2.4K]

Answer:true

Explanation:

4 0
3 years ago
If a pork roast must absorb kJ to fully cook, and if only 10% of the heat produced by the barbecue is actually absorbed by the r
kolezko [41]

Answer:

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

Explanation:

C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g),\Delta H_{rxn}=-2044 kJ/mol (assuming)

Energy absorbed by pork,E = 1.6\times 10^3 kJ (assuming)

Total energy produced by barbecue = Q

Percentage of energy absorbed by pork = 10%

10\%=\frac{E}{Q}\times 100

Q=\frac{E}{10}\times 100=\frac{1.6\times 10^3 kJ}{10}\times 100=1.6\times 10^4 kJ

Since, it is a energy produced in order to indicate the direction of heat produced we will use negative sign.

Q = -1.6\times 10^4 kJ

Moles of propane burnt to produce Q energy =n

n\times \Delta H_{rxn}=Q

n=\frac{Q}{\Delta H_{rxn}}=\frac{-1.6\times 10^4 kJ}{-2044 kJ/mol}=7.83 mol

According to reaction , 1 mol of propane gives 3 moles of carbon dioxide. then 7.83 moles of will give:

\frac{1}{3}\times 7.83 mol=23.49 mol carbon dioxide gas.

Mass of 23.49 moles of carbon dioxide gas:

23.49 mol × 44 g/mol =1,033.56 g

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

8 0
2 years ago
Diagonal lines in the graph represent the temperature of the substance is ___.
labwork [276]
Gdnndjfndmnxndndndjdjdjxncncncnnc
5 0
3 years ago
Formic acid, which is a component of insect venom, has a ka = 1.8 ´ 10-4. what is the [h3o+] in a solution that is initially 0.1
scoray [572]
Answer is: concentratio of H₃O⁺ ions is 4.2·10⁻³ M.<span>
Chemical reaction: HCOOH(aq) + H</span>₂O(l) ⇄ HCOO⁻(aq) + H₃O⁺(aq).<span>
c(HCOOH) = 0,1 M.
[</span>H₃O⁺] = [HCOO⁻] = x.<span>
[HCOOH] = 0,1 M - x.
</span>Ka = [H₃O⁺] · [HCOO⁻] / [HCOOH].
0,00018 = x² / (0,1 M - x).<span>
Solve quadratic equation: x = </span>[H₃O⁺] = 0,0042 M.
7 0
3 years ago
Other questions:
  • A rock has a mass of 13.0 g and displaces a volume of 3.9 mL of water in a graduate cylinder. What is the density of the rock? (
    10·1 answer
  • common state of matter on earth for tin ,scientist related to tin and color,texture,hardness,smell of tin please help really imp
    11·1 answer
  • I need to know the measurements of this to the appropriate amount of significant figures
    11·1 answer
  • Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. Use wedge-and-dash bonds for the substituent groups, and be s
    7·1 answer
  • Which statement best describes the compressibility of a gas?
    10·1 answer
  • I must be present in a compound for it considered organic
    10·1 answer
  • Does anyone know this???
    9·1 answer
  • We bored<br> Meeting id:333-065-2087<br> Password:5FRgXJ
    5·2 answers
  • The pH value of 0.1 mol dm-3 of acid U is 1. Which statement is true about acid U?
    10·1 answer
  • El matraz de destilación no se puede llenar para llevar a cabo la destilación. ¿Por qué?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!