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Misha Larkins [42]
3 years ago
9

why must a beaker containing a liquid be placed on a wire gauze above a burner flame and not directly over the flame ​

Chemistry
2 answers:
Lelu [443]3 years ago
7 0

Answer:

it is not safe if you put the beaker down not on the wire gauze about the flame. SAFETY FIRST

Explanation:

likoan [24]3 years ago
6 0

Answer:

To evenly heat the beaker and the liquid

Explanation:

The beaker containing a liquid must be placed on a wire glaze above a burner flame so that it’ll evenly heat throughout the entire beaker, otherwise if you were to just place the beaker above the flame not only could you potentially burn yourself but the liquid will not heat evenly.

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If you have 16 g of manganese (II) nitrate tetrahydrate, how much water is required to prepare 0.16 M solution from this amount
Schach [20]

<u>Answer:</u> The amount of water required to prepare given amount of salt is 398.4 mL

<u>Explanation:</u>

To calculate the volume of solution, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Molarity of solution = 0.16 M

Given mass of manganese (II) nitrate tetrahydrate = 16 g

Molar mass of manganese (II) nitrate tetrahydrate = 251 g/mol

Putting values in above equation, we get:

0.16M=\frac{16\times 1000}{251\times \text{Volume of solution}}\\\\\text{Volume of solution}=\frac{16\times 1000}{251\times 0.16}=398.4mL

Volume of water = Volume of solution = 398.4 mL

Hence, the amount of water required to prepare given amount of salt is 398.4 mL

4 0
3 years ago
What are the number of protons, electrons, and neutrons in one atom of titanium?.
Olin [163]

Answer:

Protons: 22

Neutrons: 26
Electrons: 22

Explanation:

Titanium's atomic number is 22, meaning that the number of protons it has in its nucleus is also 22. # of electrons = # of protons, so the number of electrons is also 22. Titanium has an atomic mass of 47.867, but we can round up to 48. To find the atomic mass, we add up number of protons and neutrons. We know the number of protons as 22, so we subtract 22 from 48 and get a number of 26. Thus, the number of neutrons is 26.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

3 0
3 years ago
Which reactions are singe displacement reactions
oksano4ka [1.4K]
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5 0
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The pattern of inheritance in which more than one pair of genes affects a trait is *
s344n2d4d5 [400]

Answer:

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8 0
3 years ago
If a 2,000-kilogram car accelerates at a rate of 3 meters per second squared,
Likurg_2 [28]

Answer:

Explanation:

assuming there is no friction

fnet=ma

2,000 kg*3m/s=6,000 N

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3 years ago
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