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Reika [66]
3 years ago
12

Differentiate between 4 H2O and H8O4

Chemistry
1 answer:
Ksju [112]3 years ago
7 0

Answer:

How many atoms of hydrogen and oxygen are in 2 molecules of water? ... 7) Using complete sentences, explain the difference between the chemical ... (s) solid, (l) liquid, (g) gas, (aq) aqueous solution (dissolved in water).

Explanation:

hope this helps✌️

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43. Use Table 3-1 to identify a substance that undergoes a
LuckyWell [14K]

Answer:

Oxygen, and from solid to liquid. This is because oxygen's melting point is at -218°C. Melting point refers to the temperature where heat causes particles to vibrate with sufficient energy to break the solid structure, so for oxygen this means it's being turned into a liquid.

4 0
3 years ago
A sample may contain any or all of the following ions: Hg22+, Ba2+, Mn2+. No precipitate formed when an aqueous solution of NaCl
Bess [88]

Answer:

Only Mn⁺² is present.

Explanation:

  • When an aqueous solution of NaCl is added, the Cl⁻ species is introduced. In the presence of Cl⁻, Hg₂²⁺ would precipitate as Hg₂Cl₂.
  • When an aqueous solution of Na₂SO₄ is added, the SO₄⁻² species is introduced. In the presence of SO₄⁻², Ba⁺² would precipitate as BaSO₄.

No precipitate formed when either of these solutions were added, thus <u>the sample does not contain Hg₂⁺² nor Ba⁺²</u>.

  • Under basic conditions Mn⁺² would precipitate as Mn(OH)₂. A precipitate formed once the solution was made basic, so <u>the sample contains Mn⁺²</u>.
3 0
3 years ago
The tablet has a mass of 1.20 g and contains 700 mg of lithium carbonate.
kondaur [170]

Answer:

The right answer is "58.3%".

Explanation:

The given values are:

Mass of lithium carbonate,

= 700 mg

i.e.,

= 0.7 g

Mass of tablet,

= 1.20 g

Now,

The percentage of active ingredient will be:

=  \frac{Mass \ of lithium \ carbonate}{Mass \ of \ tablet}\times 100

On substituting the given values, we get

=  \frac{0.7}{1.20}\times 100

=  0.583\times 100

=  58.3%

4 0
3 years ago
The prefix 'mili-' means a thousandth. So a mili-liter is a thousandth of a liter. 1 mili-liter = 1/1000 liter How many liters i
Vesnalui [34]

it would be 0.623 hope this helps
3 0
4 years ago
Which of these best describes a flight that is approaching the speed of sound
liberstina [14]
More drag is created because the air molecules are not moving out of the way of the airplane      
8 0
3 years ago
Read 2 more answers
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