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Chemistry

1 answer:

Arada [10]2 years ago

3 0

<h2>Answer:</h2>

These are reactant and products of the respiration in the cells.

The complete reaction is:

C6H1206 + 602 → 6CO2 + 6H20

<h3>Explanation:</h3>

Respiration is the chemical reaction undergoes in the ells of human body to make the energy for the body.
It is the breakdown of glucose molecules and the use of that breakdown energy to make ATP, the energy currency of cells.
Basically all the sugar and proteins are first converted in glucose, C6H12O6. Then this glucose molecules undergoes breakdown by a series of steps.

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How many atoms is 50 g of He?

tigry1 [53]

Atomic <span>mass He = 4.002 u.m.a

4.002 g --------------- 6.02x10</span>²³ atoms
50 g ------------------ ? atoms

50 x ( 6.02x10²³) / 4.002

= 3.01x10²⁵ / 4.002

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2 years ago

John has a solution with a pH of 12.21. what is the hydrogen ion concentration of this solution?

Georgia [21]

Answer:

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3 years ago

The black, granular material that fills a dry cell in a common flashlight (between the carbon rod and the zinc shell) is mangane

mestny [16]

Answer: c. +4

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

$Mn:25:1s^22s^22p^63s^23p^64s^23d^{5}$

$Mn^{4+}:21:1s^22s^22p^63s^23p^63d^1$

$O:8:1s^22s^22p^4$

$O^{2-}:10:1s^22s^22p^6$

Here manganese is having an oxidation state of +4 called as cation and oxygen forms an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged to give $Mn_2O_4$ which written in simplest whole number ratios to give neutral $MnO_2$