answer.
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
Liono4ka [1.6K]
2 years ago
8

Which of the following substances would release the most amount of heat when they cool from 50oC to 25oC if you started with equ

al masses of each?Aluminum, 0.920 J/goCCast iron, 0.461 J/goC or
Chemistry
1 answer:
DochEvi [55]2 years ago
3 0

Answer:

pyvugdhgtcectbibycrc

Explanation:

c9yridutcltzojvifzlh ljf7gp you have a chance can you send me the link for a while 4

You might be interested in
Challenge question: This question is worth 6 points. As you saw in problem 9 we can have species bound to a central metal ion. T
GenaCL600 [577]

Answer:

CN^- is a strong field ligand

Explanation:

The complex, hexacyanoferrate II is an Fe^2+ specie. Fe^2+ is a d^6 specie. It may exist as high spin (paramagnetic) or low spin (diamagnetic) depending on the ligand. The energy of the d-orbitals become nondegenerate upon approach of a ligand. The extent of separation of the two orbitals and the energy between them is defined as the magnitude of crystal field splitting (∆o).

Ligands that cause a large crystal field splitting such as CN^- are called strong field ligands. They lead to the formation of diamagnetic species. Strong field ligands occur towards the end of the spectrochemical series of ligands.

Hence the complex, Fe(CN)6 4− is diamagnetic because the cyanide ion is a strong field ligand that causes the six d-electrons present to pair up in a low spin arrangement.

5 0
2 years ago
When heating a flammable or volatile solvent for a recrystallization, which of these statements are correct? More than one answe
otez555 [7]

Explanation:

A volatile substance is defined as the substance which can easily evaporate into the atmosphere due to weak intermolecular forces present within its molecules.

Whereas a flammable substance is defined as a substance which is able to catch fire easily when it comes in contact with flame.

Hence, when we heat a flammable or volatile solvent for a recrystallization then it should be kept in mind that should heat the solvent in a stoppered flask to keep vapor away from any open flames so that it won't catch fire.

And, you should ensure that no one else is using an open flame near your experiment.

Thus, we can conclude that following statements are correct:

  • You should heat the solvent in a stoppered flask to keep vapor away from any open flames.
  • You should ensure that no one else is using an open flame near your experiment.
3 0
2 years ago
A student conducting a calorimetry investigation determines a negative ∆H. What does the negative value indicate about the react
lawyer [7]

Answer:

a

Explanation:

correct

5 0
2 years ago
Which choice(s) correctly rank(s) the bonds in terms of increasing polarity?
Marina CMI [18]

Answer:

(II) only correctly rank the bonds in terms of increasing polarity.

Explanation:

Bond polarity is proportional to difference in electronegativity between bonded atoms.

Atoms    Electronegativity          Bond        Electronegativity difference

Cl                          3.0                       Cl-F                      1.0

Br                          2.8                       Br-Cl                     0.2

F                            4.0                       Cl-Cl                      0

H                            2.1                       H-C                       0.4

C                            2.5                       H-N                       0.9

N                             3.0                      H-O                       1.4

O                             3.5                      Br-F                       1.2

I                               2.7                      I-F                         1.3

Si                             1.9                      Cl-F                       1.0  

P                              2.2                      Si-Cl                      1.1

                                                          Si-P                        0.3

                                                          Si-C                        0.6

                                                           Si-F                        2.1

So, clearly, order of increasing polarity : O-H > N-H > C-H

So, (II) only correctly rank the bonds in terms of increasing polarity

4 0
2 years ago
Calculate the mass percent of Cl in Freon -112 (C2 Cl4 F2), a CFC refrigerant
Karolina [17]

Answer:

The answer to your question is:  69.6 %

Explanation:

Freon -112 (C₂Cl₄F₂)

MW = (12 x 2) + (35.5 x 4) + (19 x 2)

      = 24 + 142 + 38

      = 204 g

                       204 g of C₂Cl₄F₂  -----------------  100%

                       142 g                     -----------------   x

                      x = (142 x 100 ) / 204

                      x = 69.6 %

5 0
2 years ago
Read 2 more answers
Other questions:
  • At STP, fluorine is a gas and iodine is a solid. This observation can be explained by the fact that fluorine has
    8·2 answers
  • What is the percentage concentration by mass of a solution that contains 0.098 kg of H2SO4 in 500.0 g of H2O?
    14·2 answers
  • 1. How many grams of chromium metal are plated out when a constant current of 8.00 A is passed through an aqueous solution conta
    15·1 answer
  • What mass of lif is contained in 18.66 g of a 20.0% by mass solution of lif in water?
    10·1 answer
  • Which of these statements describes a limitation of the Treaty on Plant Genetic Resources?
    14·2 answers
  • Identify all actions that you should take if you have chipped or broken glassware. Notify your teacher. Have the custodian clean
    8·2 answers
  • A family leaves for summer vacation by driving on the highway. The car's tires start the trip with a pressure of 3.8atm at a tem
    12·1 answer
  • ANSWER FAST PLEASE!!
    6·1 answer
  • How are oxygen and<br> water molecules different<br> from argon and neon<br> molecules?
    10·1 answer
  • Alex's teacher showed him a model of gas particles in a sealed container. How should Alex change the model to show the particles
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!