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2 years ago

How is thermal energy from the equator distributed along the coastlines?

1 answer:

8 0

Conduction is one of the three main ways that heat energy moves from place to place. The other two ways heat moves around are radiation and convection. Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. Conduction occurs more readily in solids and liquids, where the particles are closer to together, than in gases, where particles are further apart. The rate of energy transfer by conduction is higher when there is a large temperature difference between the substances that are in contact.

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A 52.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 26.0 mL of KOH at 25 ∘C.

prohojiy [21]

The balanced equation for the above reaction is
HBr + KOH ---> KBr + H₂O
stoichiometry of HBr to KOH is 1:1
HBr is a strong acid and KOH is a strong base and they both completely dissociate.
The number of HBr moles present - 0.25 M / 1000 mL/L x 52.0 mL = 0.013 mol
The number of KOH moles added - 0.50 M / 1000 mL/L x 26.0 mL = 0.013 mol
the number of H⁺ ions = number of OH⁻ ions
therefore complete neutralisation occurs.
Therefore solution is neutral. At 25 °C, when the solution is neutral, pH = 7.
Then pH of solution is 7

7 0

2 years ago

If a balloon contains 3.00 L of air that has a pressure of 36.74 psi, what is the gas volume (the volume of the balloon) once it

Troyanec [42]

Answer:

7.5 L

Explanation:

At constant temperature and number of moles, Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

V₁ = 3.00 L

V₂ = ?

P₁ = 36.74 psi = 2.5 atm (Conversion factor, 1 psi = 0.068046 atm)

P₂ = 1 atm (Atmospheric pressure as it comes to surface)

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${2.5\ atm}\times {3.00\ L}={1\ atm}\times {V_2}$

${V_2}=\frac{{2.5}\times {3.00}}{1}\ L$

${V_2}=7.5\ L$

6 0

2 years ago

What is the percent composition of a solution in which 480 grams of sodium chloride, NaCl, is dissolved in 4 liters of solution.

ZanzabumX [31]

12% NaCl is the answer I came to... Have a GREAT day!!! :)

8 0

2 years ago

Which of the following is NOT an advantage of the metric system?

notsponge [240]

Answer: The answer is A

Explanation:

7 0

2 years ago

Read 2 more answers

Which compound could serve as a reactant in a neutralization reaction ?

Veseljchak [2.6K]

The compound that could serve as a reactant in the neutralization reaction is H2SO4

Explanation
Neutralization reaction occur between an acids and a base. H2SO4 ( sulfuric acid) is a strong acid. It can be neutralized by strong base such as NaOH ( sodium hydroxide)

Example of neutralization reaction is

2NaOH + H2SO4 → Na2SO4 + 2H2O

7 0

1 year ago