3 years ago

Which of the following statements is correct about the gases which participate in photosynthesis? (5 points)

Chemistry

1 answer:

aleksklad [387]3 years ago

4 0

Answer:

Carbon dioxide is used up, and oxygen is produced.

Explanation:

For photosynthesis to occur the plant need carbon dioxide water and sunlight to convert it into glucose for it to eat and oxygen is a byproduct of the chemical reaction.

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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:

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