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3 years ago

Enter a net ionic equation for the reaction between nitric acid and calcium hydroxide.

1 answer:

8 0

HNO₃(aq) +Ca(OH)₂(aq) --> H₂O(l) + Ca(NO₃)₂(aq)

It is Ca(NO₃)₂ because NO₃ has a charge of -1, and Ca has a charge of 2+. And when writing an ionic compound, you take the charge of 1 and write it as the subscript of the other.

Now let's balance the equation and then find the net ionic equation.
2HNO₃(aq) +Ca(OH)₂(aq) --> 2H₂O(l) + Ca(NO₃)₂(aq)

2H⁺(aq) + 2NO₃⁻(aq) + Ca²⁺(aq) + 2OH⁻(aq) --> 2H₂O(l) + Ca²⁺(aq) + 2NO₃⁻(aq)

We can get rid of the spectator ions. These are the ions that are on both sides.
We are left with
2H⁺(aq) + 2OH⁻(aq) --> 2H₂O(l)

We can simplify the net ionic equation down to
H⁺(aq) + OH⁻(aq) --> H₂O(l)

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Fill in the word that completes each sentence. Food contains a sugar called , which is broken down in a process called cellular

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Answer:

glucose

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Explanation:

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2 years ago

Read 2 more answers

A chemical reaction in which one element replaces another element in a compound can be catergorized as a

Gwar [14]

Answer:

$\huge\boxed{\sf Single \ displacement \ reaction}$

Explanation:

<h2><u>Displacement reaction:</u></h2>

A reaction in which an element displaces or replaces another element of a compound is called a displacement reaction.

<h3><u>Types:</u></h3>

There are 2 types:

<h3><u>1. Single displacement reaction:</u></h3>

If one element displaces 1 other element of a compound, it is called single displacement reaction.
<u>Example</u>: $CuSO_4 +Fe \longrightarrow \ FeSO_4 + Cu$
Here, 1 element (Fe) displaces 1 other element (Cu) of a compound.

<h3><u>2. Double displacement reaction:</u></h3>

If two elements in two compounds displace one another, it is called double displacement reaction.
<u>Example:</u> $CuSO_4+NaOH \longrightarrow Cu(OH)_2 + Na_2SO_4$
Here, Copper and sodium both displace each other.

$\rule[225]{225}{2}$

4 0

1 year ago

Which of the following will stay constant, no matter if the substance is in the solid, liquid, or gas state?

34kurt

The mass of any substance will remain the same regardless of its state of matter. Using water as an example, its volume increases when it is boiled to a gas or when it is frozen from a liquid state to the solid state ice. The volume and temperature will change as it moves through the states of matter, however the amount of individual molecules of oxygen and hydrogen that form water will remain the same and this constitute mass.

3 0

2 years ago

Explain why an insoluble compound added to water is considered a nonelectrolyte.

DaniilM [7]

Explanation:

A non-electrolyte is defined as a solution which does not contain any ions and hence, it is unable to conduct electricity.

For example, when a non-polar substance like $CCl_{4}$ is dissolved in water then it will not dissociate into ions.

As electricity is the flow of ions or electrons. So, a non-electrolyte solution is not able to conduct electricity.

Similarly, a compound that is insoluble in water will not dissociate into ions. Hence, this type of solution will not be able to conduct electricity.

8 0

2 years ago

3. A 31.2-g piece of silver (s = 0.237 J/(g · °C)), initially at 277.2°C, is added to 185.8 g of a liquid, initially at 24.4°C,

VARVARA [1.3K]

Answer:

$Cp_{liquid}=2.54\frac{J}{g\°C}$

Explanation:

Hello,

In this case, since silver is initially hot as it cools down, the heat it loses is gained by the liquid, which can be thermodynamically represented by:

$Q_{Ag}=-Q_{liquid}$

That in terms of the heat capacities, masses and temperature changes turns out:

$m_{Ag}Cp_{Ag}(T_2-T_{Ag})=-m_{liquid}Cp_{liquid}(T_2-T_{liquid})$

Since no phase change is happening. Thus, solving for the heat capacity of the liquid we obtain:

$Cp_{liquid}=\frac{m_{Ag}Cp_{Ag}(T_2-T_{Ag})}{-m_{liquid}(T_2-T_{liquid})} \\\\Cp_{liquid}=\frac{31.2g*0.237\frac{J}{g\°C}*(28.3-227.2)\°C}{185.8g*(28.3-24.4)\°C}\\ \\Cp_{liquid}=2.54\frac{J}{g\°C}$

Best regards.

6 0

3 years ago