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faltersainse [42]
3 years ago
12

What do you need in order to measure the mass of water

Chemistry
1 answer:
zhuklara [117]3 years ago
3 0

Answer:a graduated cylinder

Explanation:

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A weak acid (ha) has a pka of 4.001. If a solution of this acid has a ph of 4.110, what percentage of the acid is not ionized? (
OverLord2011 [107]

99.9224 % of the acid is not ionized.

____HA + H₂O ⇌ A⁻ + H₃O⁺

I: ___<em>c</em> ________0 ____0  

C: _-α<em>c</em> _______+α<em>c</em> __+α<em>c </em>

E: <em>c</em>(1-α) _______α<em>c</em> ___α<em>c </em>

pH = 4.110

[H₃O⁺] = α<em>c</em> = 10^(-4.110) mol/L = 7.76 × 10⁻⁵ mol/L

α = 7.76 × 10⁻⁵

1 – α = 1 - 7.76 × 10⁻⁵ = 0.999 224 = 99.9224 %

7 0
3 years ago
Hello can somone help me ?
zalisa [80]

174 \; \text{protons} / (29 \; \text{copper atoms} \cdot \text{proton}^{-1}) = 6 \; \text{copper atoms}

Thus 174 protons would make at most 6 copper atoms. However, it would take 174 extra electrons (29 per atom) and even more neutrons than that to construct neutral copper atoms with stable nuclei.

7 0
3 years ago
What was the chemical purpose of heating the MnSO4⋅H2O? Why is this procedure important?
Alla [95]

The chemical purpose of heating the MnSO4⋅H2O is to eliminate water with the formation of new compounds.

<h3>Dehydration reactions</h3>

Dehydration reaction is a type of chemical reaction that involves the removal of water which would eventually lead to the formation of a new compound.

The molecule of MnSO4⋅H2O contains a molecule of water(H2O). After heating of the molecule, water is lost giving rise to the dry compound MnSO4.

Other examples of dehydration reactions are:

  • Reactions that produce acid anhydrides.

  • Reactions that involve the production of polymers.

  • Reaction of sucrose with concentrated sulfuric acid

Therefore, the chemical purpose of heating the MnSO4⋅H2O is to eliminate water with the formation of new compounds.

Learn more about dehydration here:

brainly.com/question/12261974

8 0
2 years ago
Perform the following calculation and report the answer with the correct number of significant figures.
jarptica [38.1K]

Answer:

4.40 X 8.0 =35.2

Explanation:

multiply it

8 0
3 years ago
A cation has an electron configuration of 1s22s22p63s23p6. what element could this be?
Stolb23 [73]
The element should be Argon
7 0
3 years ago
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