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3 years ago

What is the oxidizing agent in the citric acid cycle that is derived in part from the vitamin niacin?

Chemistry

1 answer:

nasty-shy [4]3 years ago

3 0

Answer:

NAD (Nicotinamide adenine dinucleotide)

Explanation:

NAD+ (or NADH in its reduced form) is important in cellular respiration as it acts as an electron carrier, providing a shuttle system for the movement of electrons. This drives a proton pump and generates ATP via oxidative phosphorylation. Niacin is a form of vitamin B3 that we get from our diet and is a precursor for NAD.

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The physical properties of a compound are similar to those of its elements. true or false

sdas [7]

Absolutely false. in fact exact opposites. A compound is made up of multiple elements.

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4 years ago

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Calculate the wavelength of an electron (m = 9.11 x 10-28 g) moving at 3.66 x 100 m/s. A) 1.81 x 10-10 m B) 2.76 x 10-9 m C) 5.0

inna [77]

Answer:

option e = 1.99 × 10⁻⁶ m

Explanation:

Given data:

Mass of electron = 9.11 × 10⁻²⁸ g or 9.11 × 10⁻³¹ Kg

Velocity = 3.66 × 100 m/s

Wavelength = ?

Solution:

Formula:

λ = h / m. v

λ = wavelength

h = planck's constant

m = mass

v = velocity

Now we will put the values in equation

λ = h / m. v

λ = 6.63 × 10⁻³⁴ Kg. m²/s / 3.66 × 100 m/s . 9.11 × 10⁻³¹ Kg

λ = 6.63 × 10⁻³⁴ Kg. m²/s / 3334.26 × 10⁻³¹ Kg .m/s

λ = 1.99 × 10⁻⁶ m

7 0

3 years ago

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Where does acid rain occur?

vlabodo [156]

<span>Acid rain is precipitation that contains high levels of nitric or sulfuric acid. Natural and industrial sources can release sulfur dioxide and nitrogen oxide into the atmosphere, leading them to combine chemically with oxygen and water to form their respective acidic molecules. These acids are then deposited through rain or dust depending on the climate of the region. While acid rain can occur anywhere in the world, it is prevalent in regions that have high industrial activity.</span>

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4 years ago

The ancient false idea that life appeared from nowhere

Korolek [52]

The answer is God because if you think on it hard enough, you realize that we couldnt of come from nowhere. Then, you get a headache and just stop thinking about.

Hope this helps :D

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3 years ago

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The image shows a molecular model of a compound using balls and sticks. Each ball is an atom and each stick is a bond. If you we

jeka94

<h2><u>Full Question:</u></h2>

The image shows a molecular model of a compound using balls and sticks. Each ball is an atom and each stick is a bond. If you were to use balls and sticks to model a molecule of an element, how must your model differ from what’s shown?

A. The sticks must be shorter.

B. The balls must be the same color.

C. The balls must be smaller.

D. The balls must change to cubes.

<h2><u>Answer:</u></h2>

The balls must be of same colour.

Option B.

<h3><u>Explanation:</u></h3>

A Molecule is defined as the smallest part of an element or compound which can exist freely in nature. An element is define as the matter which is when divided into smallest particles gives only one type of particle or atom. Where as a compound is defined as the combination of different elements in a particular ratio which has properties totally different from the combining elements. So an element comprises of only one type of atoms.

In this picture we can see that there is a central atom which is marked in blue where as the other atoms are peripheral and marked in red. The bonds between the blue atom and red atoms are marked with sticks. So if only one type of atoms are present in the molecule then only one coloured balls will be seen. Then the the colour of the balls will be only one.

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3 years ago