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Paha777 [63]
3 years ago
12

Which of the following substance is most likely basic​

Chemistry
1 answer:
ehidna [41]3 years ago
5 0

Answer:

Please provide answer options. :)

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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

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How do ionic bonds differ from covalent bonds? I NEED HELP QUICK PLSSS!!!!!
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Answer:

.

Explanation:

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What is the significant figures of 12.00
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There are 4 significant figures
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Explain why a coin is able float on top of the water
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Because of the surface tention.
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Answer them please i cant figure out what it is
miss Akunina [59]

Answer:

iv. The motion between A & B moves at a further distance than C & D's

v. The cyclist travels 800 meters

vi. It takes approx. 80 seconds

vii. The cyclist's speed is 10 meters per second (m/s)

viii. The cyclist's speed is also 10 meters per second (m/s)

vii. (2) The cyclist's average speed is 10 meters per second (m/s)

Explanation:

Speed is calculated using the formula distance divided by time (d/t)

vii (2) needs further explanation:

Though there is a moment of rest, the cyclist still travels the same speed throughout the entire trip. To check this answer however, you can total the distance and time the cyclist traveled and use speed formula to get 10 meters per second, again.

6 0
3 years ago
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