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4 years ago

If nickel is added to copper sulfate solution, the nickel will replace the copper. write the balanced equation

Chemistry

2 answers:

svp [43]4 years ago

8 0

Ni(s) + CuSO₄(aq) → Cu(s) + NiSO₄(aq)

Ni + Cu²⁺ + SO₄²⁻ → Cu + Ni²⁺ + SO₄²⁻

Ni + Cu²⁺ → Cu + Ni²⁺

Andrew [12]4 years ago

8 0

Answer:-

Ni + CuSO4 --> NiSO4 + Cu

Explanation:-

The symbol for Nickel is Ni.

The Symbol for copper is Cu.

Copper Sulphate has the formula CuSO4.

If Nickel replaces copper from copper sulphate then nickel sulphate is formed.

Nickel sulphate has the formula NiSO4.

So the equation becomes

Ni + CuSO4 --> NiSO4 + Cu

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Nitrogen is a group 15 element. What does being in this group imply about the structure of the nitrogen atom?

Yanka [14]

Answer:

D. Nitrogen has 5 valence electrons.

Explanation:

Nitrogen is an element in group 5A of the periodic table. Elements in group 5A all contain just 5 valence electrons. (Electrons in the outer shell).

**Elements are organized into these groups in a periodic table based on the number of valence electrons which determines their charge. (Does not apply to transition metals)

3 0

4 years ago

Audio and radio signals can be carried over electric wires and they are examples of ________ current. A) alternating B) direct C

ivann1987 [24]

Answer:

Direct current!

Explanation:

Process of elimination, it isn't A, it isn't C, and it definitely isn't D

4 0

4 years ago

Milk of magnesia is often taken to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 te

Igoryamba

Answer:

8.61 mL of the HCl solution

Explanation:

The reaction that takes place is:

2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O

From the given mass of Mg(OH)₂, we can calculate <u>the moles of HCl that are neutralized</u>:

4x10² mg = 400 mg = 0.400g

0.400g Mg(OH)₂ ÷ 58.32g/1mol = 6.859*10⁻³ mol Mg(OH)₂

6.859*10⁻³ mol Mg(OH)₂ * $\frac{1molHCl}{1molMg(OH)_{2}} =$ 3.429x10⁻³ mol HCl

Finally, to calculate the volume of an HCl solution, we need both the moles and the concentration. We can <u>calculate the concentration using the pH value</u>:

pH = -log[H⁺]

1.4 = -log[H⁺]

$10^{-1.4}$ = [H⁺]

0.0398 M = [H⁺] = [HCl] *Because HCl is a strong acid*

Thus, the volume is:

0.0398 M = 3.429x10⁻³mol HCl / Volume

Volume = 8.616x10⁻³ L = 8.62 mL

6 0

4 years ago

Read 2 more answers

In n=6 the correct sequence for filling of electron will be

Novay_Z [31]

Answer:

there are 2 ways

2,4

1s² 2s² 2p²

4 0

3 years ago

Nitric oxide can be oxidized in air to form nitrogen dioxide. At normal atmospheric concentrations this is a very slow process.

lawyer [7]

Answer:

exothermic

Explanation:

This is an exothermic reaction because you can see the 232.4 kJ at the end of the reaction. That means that 232.4 kilo-joules are released when the reaction happens; when energy is released during a reaction, the reaction is exothermic.

Tell me if you need anything else! :)

6 0

4 years ago