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Gennadij [26K]
4 years ago
8

Which of the following statements best predicts the pH value of H2CO3 and KOH?

Chemistry
1 answer:
worty [1.4K]4 years ago
4 0

Answer:

The 2nd one

Explanation:

ITS THE RIGHT ANSWER

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When placed in a freezer, liquid water turns into solid ice. Why is this considered a physical change?
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This is considered a physical change because the water does not change its chemical properties - it is still water. It is simply just moving its shape such as gas form, liquid form, or solid form. 
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Which liquid has the lowest vapor pressure at 65°C?
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For which of the following reactions will the reactant experience the largest degree of decomposition
ASHA 777 [7]

Answer:

D) 2 NOCl(g) ⇄ 2 NO(g) + Cl₂(g); Kp = 1.7 × 10⁻²

Explanation:

In order to compare the degree of decomposition of these reactions, we have to compare the equilibrium constant Kp. Kp is equal to the partial pressure of the products raised to their stoichiometric coefficients divided by the partial pressure of the reactants raised to their stoichiometric coefficients. The higher the Kp, the more products and fewer reactants at equilibrium. Among these reactions, D is the one that has the highest Kp, therefore the one experiencing the largest degree of decomposition.

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4 years ago
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ruslelena [56]
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4 0
3 years ago
From this list below, select the items which are properties of ionic compounds. * 5 points low melting point conductors of elect
e-lub [12.9K]

Answer:

conductors of electricity when in liquid or aqueous state

high melting point

soluble in water

Explanation:

An ionic substance is any substance that is composed of two ions of opposite charge.

In the solid state, ionic substances do not conduct electricity because the ions are trapped inside the crystal. When in liquid state or in aqueous solution, these ions are now free and the solution becomes an electrolyte.

All ionic substances have a very high melting point and dissolve in water easily.

7 0
3 years ago
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