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liq [111]
3 years ago
14

While setting up a beaker to boil a solution on a hot plate, you notice that the stirring is erratic and unstable. What should y

ou do to stabilize the stirring solution?.
Chemistry
1 answer:
Mama L [17]3 years ago
3 0

Given what we know about lab safety, we can confirm that when dealing with unstable and erratic equipment such as the stirring mechanism, in this case, the best course of action is to deactivate the equipment until further notice.

<h3>Why should we turn off the equipment?</h3>
  • The erratic nature of the stirring mechanism is making the entire system unstable.
  • When dealing with a hot plate, and heating substances, we need to maintain stability at all times.
  • We do this to avoid spills that may cause burns or other unwanted damages.
  • Therefore, until we know why the stirring was erratic, we must turn the mechanism off.

Therefore, we can confirm that when dealing with faulty or unstable lab equipment, we must deactivate the equipment immediately in order to preserve our lab safety.

To learn more about lab safety visit:

brainly.com/question/20103808?referrer=searchResults

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magnesium hydroxide is 54.87% oxygen by mass. how many grams of oxygen are in 175 g sample of the compound
klasskru [66]

Answer:

96 g of O

Explanation:

Mg(OH)₂ → Magnesium hydroxide

Molar mass → 24.3g/mol . 1 + 16g/mol . 2 + 1g/mol . 2 = 58.3 g/mol

We determine the moles of hydroxide → 175 g . 1mol/58.3g = 3 moles

Let's make some rule of three:

In 100 g of compound we have 54.87 g of O

In 58.3 g of compound we may have (58.3 . 54.87) / 100 = 32 g

So, 1 mol of hydroxide has 32 g of oxygen

3 moles of hyroxide may have (3 .32)/1 = 96 g of O

4 0
3 years ago
Calculate the moles of O atoms in 0.658 g of Mg(NO3)2.
lara31 [8.8K]

Answer:

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

Explanation:

Mass of magnesium nitrate = m = 0.658 g

Molar mass of magnesium nitrate = M = 148 g/mol

Moles of magnesium nitrate = n

n=\frac{m}{M}=\frac{0.658 g}{148 g/mol}=0.004446 mol

1 mole of magnesium nitrate has 6 moles of oxygen atoms. Then 0.004446 moles magnesium nitrate will have :

6\times 0.004446 mol=0.026676 mol\approx 0.0267

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

8 0
4 years ago
In the following table, all the columns for the element beryllium are filled out correctly.
scoundrel [369]
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4 years ago
Robert Boyle wrote "Sceptical Chymist" What was his reason for writing this book? What was he trying to prove?
bearhunter [10]
<span>Answer: Boyle began to detach chemistry from the mysticism of alchemy. He declared that most followers of alchemy were not interested in the fundamental causes of phenomena and instead looked to.</span>
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3 years ago
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Which type of bond represents a weak chemical bond?
Nataliya [291]

Answer:

Hydrogen bond, cohesion

Explanation:

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