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
ryzh [129]
3 years ago
14

In Boston (elevation 20 feet), you step on a

Chemistry
1 answer:
puteri [66]3 years ago
5 0
B less because higher in elevation
You might be interested in
Suppose that 0.48 g of water at 25 ∘ C condenses on the surface of a 55- g block of aluminum that is initially at 25 ∘ C . If th
mamaluj [8]

Answer:

49^oC

Explanation:

At 25^oC, the heat of vaporization of water is given by:

\Delta H^o_{vap} = 43988 J/mol\cdot \frac{1 mol}{18.016 g} = 2441.6 J/g

The water here condenses and gives off heat given by the product between its mass and the heat of vaporization:

Q_1 = \Delta H^o_{vap} m_w

The block of aluminum absorbs heat given by the product of its specific heat capacity, mass and the change in temperature:

Q_2 = c_{Al}m_{Al}(t_f - t_i)

According to the law of energy conservation, the heat lost is equal to the heat gained:

Q_1 = Q_2 or:

\Delta H^o_{vap} m_w = c_{Al}m_{Al}(t_f - t_i)

Rearrange for the final temperature:

\Delta H^o_{vap} m_w = c_{Al}m_{Al}t_f - c_{Al}m_{Al}t_i

We obtain:

\Delta H^o_{vap} m_w + c_{Al}m_{Al}t_i = c_{Al}m_{Al}t_f

Then:

t_f = \frac{\Delta H^o_{vap} m_w + c_{Al}m_{Al}t_i}{c_{Al}m_{Al}} = \frac{2441.6 J/g\cdot 0.48 g + 0.903 \frac{J}{g^oC}\cdot 55 g\cdot 25^oC}{0.903 \frac{J}{g^oC}\cdot 55 g} = 49^oC

6 0
3 years ago
The Ottoman Empire was dissolved following World War I. Which modern nation came out of that empire?
kati45 [8]
The answer would be Turkey
7 0
3 years ago
Read 2 more answers
Hard water contains relatively large concentrations of
ycow [4]

Answer:

<u><em>D.</em></u>

<u><em>All of these ions</em></u>

Explanation:

Hope this helps:)

5 0
3 years ago
Read 2 more answers
In the determining molar volume experiment, we will use water. how will vapor pressure play a role in this experiment?
Bas_tet [7]
Molar volume is a property of a component in a solution. It is defined as the volume occupied by one mole of the component in the closed system. You would not expect all solutions to execute volume additivity because intermolecular forces between the components come into play. There is no such thing as conservation of volume. 

Vapor pressure affects molar volume because gases are very sensitive by these process conditions. Vapor pressure is very temperature-dependent. Consequently, at a different temperature, your component could expand or compress, thus, affecting the molar volume. Moreover, the pressure affects the molecular collisions in the system.
7 0
3 years ago
Read 2 more answers
How to separate a solid for a solution
Blababa [14]

Answer:

Evaporation is the method of separating a solid (solute) from a homogeneous solution.

in this method, the solution is heated until the solvent gets evaporated in the form of vapor and the solute is left behind as residue.

5 0
1 year ago
Other questions:
  • During an endothermic reaction, H for the reactants was −600 kJ/mol. Which of the following statements is correct about the H fo
    7·2 answers
  • Given the following reaction:
    14·1 answer
  • Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n
    15·1 answer
  • Fe(OH)3 → Fe2O3 + H2O<br><br>y'all help tbh please ​
    9·1 answer
  • Which of these is not true of Bohr's model of the atom ?
    11·2 answers
  • Using the information in the table to the right, calculate the enthalpy of combustion of each of the following substances:
    7·1 answer
  • Which is an example of a chemical reaction?
    10·1 answer
  • What is the answer?
    12·1 answer
  • If a light bulb has a voltage of 1.5 V and has 2.5A of current running through it, what is the resistance of the light bulb?
    6·1 answer
  • Which option is a physical property of matter?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!