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kap26 [50]
3 years ago
10

Please help !!!!!!!!!!!!

Chemistry
1 answer:
Bogdan [553]3 years ago
6 0
What the hell is that
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Sodium ethanoate ? --> solid sodium ethanoate
timurjin [86]
I’m pretty sure it craters sodium acetate
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3 years ago
A pure substance that is made of only one kind of atom is called _________. A. an element B. an electron C. a particle D. a prot
tekilochka [14]
An element is a pure substance made up of only one kind of atom. An element is composed of atoms in which it is composed of neutrons and protons. The nucleus is surrounded by electrons. The answer to this problem is A. element
5 0
3 years ago
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Complete the reaction, which is part of the electron transport chain. The abbreviation FMN represents flavin mononucleotide. Use
Margarita [4]

Answer:

1. NADH + H⁺ + FMN + Q ⟶ NAD⁺ + FMN + QH₂

2. The reactant that is reduced is Q

3. The charge on iron on the right side is +2, Fe²⁺

Explanation:

NADH + H⁺ + FMN + Q ⟶ NAD⁺ + FMN + QH₂

The reaction above is catalysed by NADH:ubiquinone oxidoreductase (complex 1), which transfers a hydride ion from NADH to FMN, from which two electrons pass through a series of of Fe-S centers to the iron-sulfur protein N-2. Electron transfer from N-2 to Ubiquinone forms QH₂

The species in a reaction which gains hydrogen irons is reduced,   Therefore, the reactant that is reduced is Q, ubiquinone to form QH₂, ubiquinol.

To determine the oxidation number of iron on the right side of the reaction below,

QH2 + 2cyt c ( Fe3+) ⟶ Q + 2cyt c(Fex) + 2H^+

Sum of charges on the left side = Sum of charges on the right side

Sum of charges on the left side = 2 *+3 = +6

Therefore 2 * x + 2= 6

2x = 6 -2 = 4

x = 4/

x = 2

Therefore the charge on iron on the right side is +2, Fe²⁺

4 0
3 years ago
Pure substances are _______ in appearance ​
harina [27]

Answer:

constant appearance

Explanation:

this mean that a pure substance will have a constant appearance ,colour,density ,melting point and boiling point

3 0
3 years ago
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What is the speed of a basketball that is thrown 18meters in 4 seconds?
Artemon [7]

Answer:

4.5m/s

Explanation:

speed = distance/time

speed = 18/4

speed = 4.5m/s

7 0
2 years ago
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