Answer:
The answer is: <em>It is an exothermic process, because energy is released by the reaction and is gained by the reaction mixture.</em>
Explanation:
Endothermic (endo means in, inside; thermic refers to temperature) reaction is a type of reaction which needs to absorb the energy in order to take place. The energy in the form of the temperature is lost from the reaction mixture.
Exothermic (exo means out, outside; thermic refers to temperature) reaction is a type of reaction in which the energy in form of the temperature is being released.
Since we know that the temperature rose from 24°C to 28°C, that means that the energy was released making this process exothermic.
Answer:
C)
the potential energy is increasing through steps A & B, then decreases at C.
Explanation:
Answer:
Relative error = 0.35
observed value = 8.775
Explanation:
given data:
Actual value = 13.5 L
Percentage of error=35%
Relative error can be determined as follow:
Absolute error = actual value - observed value
Percentage of error
Then relative error
Relative error
Then absolute error =
Therefore experimental measurement value(observed value)
= actual value - absolute error
=13.5 - 4.725 = 8.775
Answer:
El número de moles de glucosa presentes en 5.38 g es 0.030 moles.
Explanation:
Answer: 36.53g
Explanation:
First we need to find the amount of NaCl that dissolves in 1L of the solution that produced 5M of NaCl
Molarity = 5M
MM of NaCl = 58.45
Molarity = Mass conc (g/L) / MM
Mass conc. (g/L) of NaCl = Molarity x MM
= 5 x 58.45 = 292.25g
Next, we need to find the amount that will dissolve in 125mL(i.e 0.125L)
From the calculations above,
292.25g of NaCl dissolved in 1L
Therefore Xg of NaCl will dissolve in 0.125L of the solution i.e
Xg of NaCl = 292.25 x 0.125 = 36.53g.
Therefore 36.53g of NaCl will dissolve in 125mL of the solution