very quick like 4 beats per seconed
The reaction of hydrochloric acid and sodium hydroxide is a neutralization reaction wherein a mixture of acid and base produces salt, water, and energy in the form of heat. A neutralization reaction is exothermic, thus producing heat. This is why the beaker felt warm to the touch.
Answer:
<h2>8 moles</h2>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>8 moles</h3>
Hope this helps you
Answer:
-26.6kJ/mol
Explanation:
The dissolution of NH₄NO₃ is:
NH₄NO₃(aq) → NH₄⁺(aq) + NO₃⁻(aq)
To solve this question we need to find the heat released in the dissolution using the equation of coffee cup calorimeter:
Q = -m*S*ΔT
<em>Where Q is heat,</em>
<em>m is the mass of solution = 1.60g + 75.0g = 76.6g</em>
<em>S is specific heat of the calorimeter (4.18J/g°C)</em>
<em>And ΔT is change in temperature (25°C - 23.34°C = 1.66°C)</em>
<em />
The heat is:
Q = -76.6g*4.18J/g°C*1.66°C
Q = -531.5J = -0.5315kJ are released
The heat released per mole = Enthalpy for the dissolution is:
<em>Moles NH₄NO₃:</em>
1.60g * (1mol / 80.043g) = 0.0200mol
Enthalpy for the dissolution:
-0.5315kJ / 0.0200mol =
<h3>-26.6kJ/mol</h3>
Answer:
60 kilometres per hour is the slowest rate of travel
Explanation:
we convert
20 kilometer per minute into kilometer per second
it comes out 1/3 kilometer per sec
