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abruzzese [7]
3 years ago
13

Which of the following statements about protons are true?

Chemistry
2 answers:
Mashutka [201]3 years ago
8 0
Protons have the same magnitude of charge as electrons but are opposite in sign.
attashe74 [19]3 years ago
4 0
The second on it true
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If 14.5 g of MnO4- (permanganate) react with manganese (II) hydroxide how many grams of manganese (IV) oxide will be produced? T
Veronika [31]

Answer:

m_{MnO_2}=21.2gMnO_2

Explanation:

Hello,

In this case, given the balanced reaction:

2MnO_4^-+2Mn(OH)_2\rightarrow 4MnO_2+2OH^-+H_2O

We can see a 2:4 mole ration between permanganate ion (118.9 g/mol) and manganese (IV) oxide (86.9 g/mol), that is why the resulting mas of this last one turns out:

m_{MnO_2}=14.5gMnO_4^-*\frac{1molMnO_4^-}{118.9gMnO_4^-}*\frac{4MnO_2}{2molMnO_4^-}  *\frac{86.9gMnO_2}{1molMnO_2} \\\\m_{MnO_2}=21.2gMnO_2

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5 0
3 years ago
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Earthquakes release seismic waves which can move along a sea.
3 0
3 years ago
The number of grams per mole of something is known as?​
Whitepunk [10]

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Judging from the wording of he question, you mean units. If that is indeed the case, the answer is g/Mol (grams per mol)

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7 0
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What are 5 most abundant elements in the Earth's crust​
allochka39001 [22]

Explanation:

Element Abundance percent by weight Abundance parts per million by weight

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2 years ago
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