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nignag [31]
4 years ago
13

Scientific research can be controversial and is often ignored. Sometimes science is unable to answer particular questions.

Chemistry
1 answer:
JulijaS [17]4 years ago
8 0
True final answer to this question

Sometimes they might not know
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What is the calculated molar concentration of the Cl⁻ ions in 0.68 M MnCl2(aq)?
Fudgin [204]
We calculate the molar concentration [Cl⁻]  using stoichiometry. MnCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of MnCl2 that dissolves.
MnCl2(s) --> Mn+(aq) + 2 Cl⁻(aq)
            [Cl⁻] = 0.68 mol MnCl2/1L × 2 mol Cl⁻ / 1 mol MnCl2 = 1.4 M
The answer to this question is [Cl⁻] = 1.4 M

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3 years ago
How would a sandblasted rock differ from a rock that hasnt been sandblasted
KengaRu [80]
Sandblasted: More smooth because all the rough edges are "blasted" away. And slightly smaller because of the loss of the edges. 

Non-Sandblasted: Not smooth; rough. 
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3 years ago
Which lists the substances from least to most acidic?
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Answer:

A.   Have an amazing day!!

Explanation:

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3 years ago
Which subatomic particle has a positive charge? Question 1 options:
Alla [95]
Protons have a positive charge. The answer is C.
8 0
3 years ago
Which of the following is an acid-base neutralization reaction? (1 point) Sn + 2HBr yields SnBr2 + H2 HCl + KOH yields KCl + H2O
borishaifa [10]

Answer:

Explanation:

Sn + 2HBr =  SnBr₂ + H₂

Here HBr is an acid but Sn is not a base . It is a metal . So it is not an acid - base reaction .

HCl + KOH =  KCl + H₂O

HCl is an acid and KOH is a base so it is an acid base reaction.

2AlCl₃ + 3Ca(OH)₂ =  2Al(OH)₃ + 3CaCl₂

It is an acid base reaction . It is so because aluminium hydroxide is a lewis acid and calcium hydroxide is a base . So it is an acid base reaction .

2C₂H₆ +7O₂ =  4CO₂ + 6H₂O

It is not an acid base reaction . It is actually an example of oxidation reaction in which ethane burns in oxygen to give carbon dioxide and water.

5 0
3 years ago
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