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Dimas [21]
4 years ago
9

The dissolution of barium hydroxide in water is an exothermic process. Which of the following statements is correct?A) The entha

lpy of solid barium hydroxide plus pure water is less than that of the solution, at the same temperature.B) The enthalpy of solid barium hydroxide plus pure water is greater than that of the solution, at the same temperature.C) The enthalpy of solid barium hydroxide plus pure water is the same as that of the solution, at the same temperature.D) The temperature of the solution is lower than of the barium hydroxide and water before mixing.E) When barium hydroxide dissolves in water, the system does work on the surroundings.
Chemistry
2 answers:
madreJ [45]4 years ago
8 0

Answer:

B

Explanation:

An exothermic reaction is one in which heat is liberated to the surrounding by a reaction.In this case,the enthalpy of the product is less than that of the reactant and such  a reaction has a negative enthalpy (ΔH).

Marta_Voda [28]4 years ago
5 0

Answer:

B

Explanation:

In an exothermic process the enthalpy of the products is smaller than the enthalpy of the reactives, in other words, the difference of enthalpy of the process (which is defined as the enthalpy at the final state of the process minus the enthalpy of the initial state) is negative. In this case, this means that the enthalpy of solid barium hydroxide plus pure water is greater than that of the solution, at the same temperature .

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Which characteristic is not common to outer planets? Question 3 options: They support rung systems They have no solid surface Th
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Answer:

They have no solid surface.

Explanation:

Many outer planets are actually known as gas giants and don't contain much of a solid surface. hope this helped!

6 0
3 years ago
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Which of these is a benefit of nuclear fusion?
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B. There is a lower risk of runaway chain reactions.

Explanation:

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2 years ago
Which chemical is produced in the highest volume in both the united states and the world?
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8 0
3 years ago
A gas is heated from 263.0 K to 298.0 K and the volume is increased from 24.0 liters to 35.0 liters by moving a large piston wit
Triss [41]

Answer:

The final pressure is approximately 0.78 atm

Explanation:

The original temperature of the gas, T₁ = 263.0 K

The final temperature of the gas, T₂ = 298.0 K

The original volume of the gas, V₁ = 24.0 liters

The final volume of the gas, V₂ = 35.0 liters

The original pressure of the gas, P₁ = 1.00 atm

Let P₂ represent the final pressure, we get;

\dfrac{P_1 \cdot V_1}{T_1} = \dfrac{P_2 \cdot V_2}{T_2}

P_2 = \dfrac{P_1 \cdot V_1 \cdot T_2}{T_1 \cdot V_2}

P_2 = \dfrac{1 \times 24.0 \times 298}{263.0 \times  35.0} = 0.776969038566

∴ The final pressure P₂ ≈ 0.78 atm.

4 0
3 years ago
Muszę napisać wzór sumatryczny wysyłam załącznik
ioda

Cześć, nie mówię po polsku, więc zrobiłem to w Tłumaczu Google, więc przepraszam, jeśli coś brzmi śmiesznie.

chlor (VII) i tlen - ten wzór to CI_{2} O_{7}, a tlenek chloru jest bezwodnikiem kwasu nadchlorowego.

węgiel i wodór - wzór na węgiel i wodór to CnH2n + 2), jest to związek organiczny, a niższa klasyfikacja jest taka, że jest to również węglowodór aromatyczny.

Mam nadzieję, że to pomoże, błogosławionego i cudownego dnia! :-)

-Cutiepatutie

7 0
3 years ago
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