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Vanyuwa [196]
3 years ago
7

Acidic solutions contain high concerntrations of

Chemistry
1 answer:
larisa [96]3 years ago
7 0

Answer:

hydrogen ions

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Tony tuns on a fan on when his room becomes uncomfortably hot. The fan is an example of?
Lesechka [4]

Answer:

C-Electrical energy changed into mechanical energy

Explanation:

Energy, according to the law of conservation of energy, is said to neither be created or lost but only interchangeable from one form to another. Energy exists in different forms. The process by which one form of energy changes to another is called TRANSFORMATION of energy.

However, certain household appliances or devices bring about this transformation of energy. For example, in a case where Tony turns a fan on when his room becomes uncomfortably hot. The fan uses an electric source to get powered on, which then facilitates the blades of the fan to move fast in order to bring about a cool atmosphere.

The fan converts ELECTRICAL energy (electric source) into MECHANICAL energy (moving energy).

4 0
3 years ago
The average atomic mass of a sample of an element X is 16.2u. What are the percentages of isotopes X (mass number 16, atomic num
belka [17]

Answer:

isotopes of hydrogen are protium,deuterium and tritium

8 0
2 years ago
Design a synthesis of acetophenone from benzene or toluene. 1275q Part 1 out of 5 Choose the best option for the nucleophile pre
Trava [24]

Answer:

A Fridiel craft catalyst will convert benzene to acetophenone.

Permanganate catalyst can be used to convert toluene to acetophenone.

Explanation:

Benzene can be reduced to acetophenone by the addition of anhydrous aluminium chloride, AlCl₃

The mechanism is as follows:

Benzene + Acetyl choloride → acetophenone

To convert toluene to acetophenone, the following steps are necessary:

  • Oxidation of Toluene to Benzoic acid.

     This is done by refluxing toluene with alkaline potassium permanganate         (KMnO₄+ Na₂CO₃).

  • Benzoic acid is converted to Benzoyl chloride by treating with thioyl chloride and heating at about 80 ⁰C.
  • Benzoyl chloride is treated with methyl lithium to form Acetophenone.
5 0
3 years ago
A chemist adds 185.0mL of a 2.6 M iron(II) bromide FeBr2 solution to a reaction flask. Calculate the millimoles of iron(II) brom
RUDIKE [14]

Answer:

0.48 moles

Explanation:

The bromide has a molarity of 2.6M.

This simply means that in 1dm^3 or 1000cm^3 of the solution, there are 2.6 moles.

Now, we need to get the number of moles in 185ml of the bromide. It is important to note that the measurement ml is the same as cm^3.

We calculate the number of moles as follows.

If 2.6mol is present in 1000ml

x mol will be present in 185 ml.

To calculate x = (185 * 2.6) ÷ 1000

= 0.481 moles = 0.48 moles to 2 s.f

7 0
3 years ago
Read 2 more answers
PLS HELP FAST!!!! Determine the new concentration if you dilute 500mL of a 1.9M solution of NaCl to 1L.
Vladimir79 [104]

Answer:

M2 = 0.95M

Explanation:

M1V1 = M2V2

(1.9)(0.5) = M2(1)

M2 = 0.95M

4 0
2 years ago
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