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
Serga [27]
3 years ago
6

The heat of a reaction may be found with the equation q=mc triangle T. A 951 g sample of carbon steel with a specific heat capac

ity of 0.49 J/(g*K) is heated to 673K and quenched in oil. The steel cools to 523K. Assuming there is no heat lost to the surroundings, calculate the heat absorbed by the oil. A) -69.9kj B) -31.5kj C) 69.9 kJ D) 71.2 kj
Chemistry
2 answers:
borishaifa [10]3 years ago
8 0

Answer:

C.

Explanation:

I took the quiz and made a 100

Nady [450]3 years ago
3 0

Answer:b

Explanation:

You might be interested in
Express 0.08010 in exponential notation to the proper significant figures
nataly862011 [7]
This would be 8.010 * 10^-2
3 0
4 years ago
How does the Bohr model show you an atom has become an ion?
Step2247 [10]
An early model of the atom was developed in 1913 by Danish scientist Niels Bohr (1885–1962). The Bohr model shows the atom as a central nucleus containing protons and neutrons with the electrons in circular orbitals at specific distances from the nucleus . These orbits form electron shells or energy levels, which are a way of visualizing the number of electrons in the various shells. These energy levels are designated by a number and the symbol "n." For example, 1n represents the first energy level located closest to the nucleus.
6 0
3 years ago
Calculate the [oh] for 0.46 Hcl
Bad White [126]

Answer:

2.17 e -14

Explanation:

A strong acid like HCl ionize 100 % in water so [H3O+] = 0.46 M

[OH-] = Kw /  [H3O+]

        =  1.0 e -14 / 0.46

         = 2.17 e -14

3 0
3 years ago
How is it that when a salt sample dissolves in water, the delta S for the process is positive?
Bess [88]

Answer:-

Water is highly ordered. In water each oxygen atom is connected to others around it through hydrogen bonding via bridging hydrogen atoms. When a salt like NaCl is dissolved, some of these Hydrogen bonds break.

When a salt like NaCl dissolves in water, the NaCl breaks in to ions Na+ and Cl-.

The water molecules now surround these ions.

The slightly negative oxygen end of water molecule gets near the Na+, while the slightly positive Hydrogen of water molecule gets near the Cl-.

So before salt sample dissolve, the water molecules were highly ordered due to hydrogen bonding. Now after salt dissolve there is a decrease in order and thus an increase in disorder of the water molecules.

Due to increase in disorder, entropy which is a measure of disorder increases. Since entropy increases, delta S for the process is positive.

4 0
3 years ago
Which of the following is the best name for CaF2?
Vladimir79 [104]
Calcium Flouride. It's an ionic bond. Cation + anion with the suffix -ide
8 0
3 years ago
Read 2 more answers
Other questions:
  • Explain the result when aluminum is placed between the liquid and the wick
    9·1 answer
  • What is the vapor pressure of water at 75°C?
    5·1 answer
  • ]Which of the following describes the arrangement of particles in plasma?The particles are ionized and move independently of eac
    10·2 answers
  • What is the chemical formula of carbon dioxide?
    6·1 answer
  • Select the correct answer.
    15·1 answer
  • A 17g sample of H2O2 was decomposed to yield 1g of H2 and 16g of O2 An unknown sample containing only H and O was decomposed to
    15·1 answer
  • Humans exhale carbon dioxide when they breathe. If the concentration of carbon dioxide in the air that
    10·1 answer
  • 12. Draw an energy curve for a chemical reaction that begins at 30 kj and has an activation energy of
    12·1 answer
  • ACTUAL YIELD VS THEORETICAL YIELD?
    9·1 answer
  • HELP PLEASE FAST 100 POINTS
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!