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Grace [21]
3 years ago
15

Write a balanced molecular equation and a net ionic equation for the reaction that occurs when magnesium hydroxide reacts with a

hydrochloric acid solution. Express your answers as chemical equations separated by a comma. Identify all of the phases in your answer.
Chemistry
1 answer:
Elina [12.6K]3 years ago
5 0

Answer:

Balanced molecular equation and net ionic equation have been shown below.

Explanation:

Mg(OH)_{2} is a weak base as it does not dissociate completely in water. HCl is a strong acid as it dissociates completely in water.

Reaction between Mg(OH)_{2} and HCl is an example of acid-base reaction. Here a salt MgCl_{2} is formed along with H_{2}O.

Balanced molecular equation:

Mg(OH)_{2}(aq.)+2HCl(aq.)\rightarrow MgCl_{2}(aq.)+2H_{2}O(l)

To write net ionic equation, spectator ions are to be removed from both side of total ionic equation. Here Cl^{-} is the spectator ion.

Total ionic equation:

Mg(OH)_{2}(aq.)+2H^{+}(aq.)+2Cl^{-}(aq.)\rightarrow Mg^{2+}(aq.)+2Cl^{-}(aq.)+2H_{2}O(l)

Net ionic equation:

Mg(OH)_{2}(aq.)+2H^{+}(aq.)\rightarrow Mg^{2+}(aq.)+2H_{2}O(l)

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Acids are water-soluble and acidic chemical compounds, often expressed as the general formula HₓA.

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3 years ago
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Calculate the period when the frequency is 50Hz.​
liraira [26]

Answer:

For example, a wave with a time period of 2 seconds has a frequency of 1 ÷ 2 = 0.5 Hz. A radio wave has a time period of 0.0000003333333 seconds.

8 0
2 years ago
These are 3 questions in one but i really need help i put the most points i could give and i’ll give Brainliest !!
kap26 [50]

Answer:

1) 950 mL

2) 625 mmHg

3) 426 mL

Explanation:

1) This is the relationship between pressure and volume. This relationship looks like this:

P1*V1 = P2*V2

This means the first pressure times the initial volume is equal to the second pressure times the second volume. We are solving for the second volume. First, convert the mmHg to atm and the mL to L.

1 L * 1 atm = 1.053 atm * X

X = 0.95 L or 950 mL

2) This is the same concept as the last one. :) We don't have to convert the mmHg to atm since the answer wants it in mmHg.

750 mmHg * 0.25 L = 0.3 L * X

X = 625 mmHg

3) The relationship between volume and temperature is similar to the one between pressure and temperature (like the problem in your last question). Remember to convert degrees C to Kelvin and mL to L.

V1 / T1 = V2 / T2

0.4 L / 303 K = X / 323 K

X = 0.426 L pr 426 mL

These problems become much easier once you learn the relationships between the different variables (temp, pressure, volume, etc.) When you have a problem like this, I like to first determine what relationship I am dealing with and then write out what I have and what I am solving for. This helps with organizing the problem. Then just solve it like a normal algebra problem. Always remember to convert temp to Kelvin, mL to L, and pressure to atm (unless it wants it in a different unit, then just make sure all the units match).

Good luck with you studies! :)

4 0
4 years ago
The volume, in liters, occupied by 2.50 moles of N2 gas.<br><br><br> calculate at STP
kondaur [170]

Answer: The volume occupied by 2.50 moles of N_2 gas at STP is 56.0L

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 2.50

R = gas constant =0.0821Latm/Kmol

T =temperature =273K  (at STP)

V=\frac{nRT}{P}

V=\frac{2.50mol\times 0.0821Latm/K mol\times 273K}{1atm}=56.0L

Thus the volume occupied by 2.50 moles of N_2 gas at STP is 56.0L

6 0
3 years ago
Please help! ill give you 90 points!
Luba_88 [7]

Answer:

1.d = 2.70 g/mL

2.d = 13.6 g/mL

4.d = 1896 g / 212.52 cm3 = 8.9 g/cm3

Explanation:If this helped subscribe to Amiredagoat Yt

3 0
3 years ago
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