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torisob [31]
2 years ago
13

Which shows the loudest sound?

Chemistry
1 answer:
prisoha [69]2 years ago
3 0
D because these are the biggest particles, and are therefore, the most dense. 
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The atomic mass of carbon -13 is 13. It has six protons. How many neutrons does the isotope have​
marishachu [46]

Answer:

13 - 6 =7

Explanation:

8 0
3 years ago
Write a balanced half-reaction for the reduction of permanganate ion mno−4 to solid manganese dioxide mno2 in acidic aqueous sol
Svetlanka [38]

The half-reaction includes either the reduction or the oxidation reaction of the redox reactions. In acidic solution permanganate ion will react with hydrogen ion to yield manganese ion and water.

<h3>What are Redox reactions?</h3>

Redox or oxidation-reduction reactions are the chemical reactions in which the oxidation and the reduction of the chemical species occur simultaneously.

Permanganate (VII) ion is a strong oxidizing agent and gets easily reduced to manganese ion in presence of the hydrogen ion in an acidic solution.

The balanced half-reaction for reduction is shown as,

\rm MnO_{4}^{-} \; (aq)+ 8H^{+} \; (aq)+ 5e^{-} \rightarrow Mn^{2+} \; (aq)+ 4H_{2}O \; (l)

Learn more about reduction reactions here:

brainly.com/question/10084275

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8 0
1 year ago
What is the origin of fahrenheit and centigrade temperature scales?.
padilas [110]

Answer:

The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture

Explanation:

8 0
1 year ago
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My teacher always pairs me up with her son, and is always talking about how she wishes I was her daughter and how much I'm like
VikaD [51]

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... its called a inogounsess

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7 0
3 years ago
What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?
dimulka [17.4K]
There are 4 electron pairs (3 bonding and 1 lone pair) so the angle is 107 degrees. The 4 electron pairs are repelled to give a tetrahedral arrangement but the molecule has a pyrimidal shape due to the lone pair.
3 0
3 years ago
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