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3 years ago

Metallic copper is formed when aluminum reacts with copper(II) sulfate according to the

Chemistry

1 answer:

katovenus [111]3 years ago

3 0

Answer: Given the equation for reaction is

2 A l +C u S O 4 → A l 2 ( S O 4 ) 3 + 3 C u .

Explanation:

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An aqueous solution is 26.0% by mass ammonia, nh3, and has a density of 0.904 g/ml. what is the molality of ammonia?

ivann1987 [24]

V=1cm³

ms = 0,904g * 0,26 = 0,23504g
M=17,04g/mol

n = m / M = 0,23504g / 17,04g/mol ≈ 0,0138mol

mso = 0,904g - 0,23504g = 0,66896g

C = 0,0138mol / 0,66896g = 0,021 mol/0,001kg=21 mol/kg

6 0

4 years ago

The elements in Period 4 on the Periodic

lisov135 [29]

Atomic numbershould be correct

3 0

3 years ago

Help????? due tonight

Margarita [4]

Answer:

What is this about?

Explanation:

Its probably a transmitter wave

7 0

3 years ago

effect. RbClO(s) → Rb+(aq) + ClO−(aq) HClO(aq) + H2O(l) equilibrium reaction arrow H3O+(aq) + ClO−(aq) The degree of dissociatio

Lemur [1.5K]

Explanation:

Common ion effect is defined as the effect which occurs on equilibrium when a common ion (an ion which is already present in the solution) is added to a solution. This effect generally decreases the solubility of a solute.

Equilibrium reaction of strontium sulfate and sodium sulfate follows the equation:

$RbClO(s)\rightarrow Rb^{+}(aq.)+ClO^{-}(aq.)$

$HClO(aq)+H_2O\rightleftharpoons H_3O^+(aq.)+ClO^{-}(aq.)$

According to Le-Chateliers principle: If there is any change in the variables of the reaction, the equilibrium will shift in the direction in order to minimize the effect.

In the equilibrium reactions, hypochlorite ion is getting increased on the product side, so the equilibrium will shift in the direction to minimize this effect, which is in the direction of hydrogen hypochlorite.

Thus, the addition hypochlorite ions will shift the equilibrium in the left direction.

The dissociation of hydrogen hypochlorite is suppressed due to the common ion effect.

8 0

4 years ago

1. Water is an amphoteric substance. In any sample of water some of the moles

umka2103 [35]

Answer:

2H₂O (l) ⇄ H₃O⁺ (aq) + OH⁻(aq)

Explanation:

The autoionization of water is defined as a chemical reaction where there is an equilibrium in which two water molecules react producing an hydronium ion and a hydroxide ion. This is also defined as the autoprotolysis of water, and is based on its amphoteric nature.

The substance that can donate protons as well as receive them is defined as amphoteric. In this way, the water behaves amphoteric as it donates a proton as an acid of Brownsted Lowry or if it receives a proton, being a base.

NH₃ + H₂O ⇄ NH₄ + OH⁻ Kb

In this case, water behaves as an acid, it donates the proton to ammonia (a base)

CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺ Ka

For this case, water behaves as a base, it recieves the proton from the acetic acid (acid)

4 0

3 years ago