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LenKa [72]
3 years ago
10

Who discovered phosphate?

Chemistry
1 answer:
iris [78.8K]3 years ago
4 0

Answer:

Hennig Brand

Explanation:

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The existence of discrete (quantized) energy levels in an atom may be inferred from
AURORKA [14]
<span>It can be inferred from atomic line spectra. These are certain wavelengths of light that atoms give off when they become excited. The energy levels in an atom can be proven to exist from this phenomenon, and furthermore, they can be measured.</span>
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3 years ago
Which statement describes the reactions in an electrochemical cell
34kurt

Answer & explanation:

Summary on electrochemical cells and redox reactions:

Electrochemical cells (or batteries) can be defined as devices capable of transforming chemical energy into electrical energy through spontaneous reactions of redox, in which electron transfer occurs.

Redox it is a chemical reaction in which there is the occurrence of oxidation and reduction of atoms of substances (chemical species) present in the process.

<u>Oxidation</u> is the loss of electrons by an atom of a chemical species, while <u>reduction</u> is the gain of electrons by an atom of a chemical species.

Thus, during an oxirreduction reaction, electrons move from the species that loses them towards the species that will receive them. This "movement" results in the formation of an electric current (or electrical energy) as occurs with batteries, for example.

6 0
3 years ago
n the laboratory, two forms of sodium phosphate will be available (the monobasic monohydrate NaH2PO4·H2O, F.W. = 137.99 g/mol, a
const2013 [10]

Answer:

The compound you will use is the Dibasic phosphate

Explanation:

Simple phosphate buffer is used ubiquitously in biological experiments, as it can be adapted to a variety of pH levels, including isotonic. This wide range is due to phosphoric acid having 3 dissociation constants, (known in chemistry as a triprotic acid) allowing for formulation of buffers near each of the pH levels of 2.15, 6.86, or 12.32. Phosphate buffer is highly water soluble and has a high buffering capacity,

In this case the most efficient way is to disolve the dibasic compound which in the reaction with the water will form the monobasic phosphate.

To make the buffer you have to prepare the amount of distillate water needed, disolve the dibasic phospate, and then adjust with HCl or NaOH depending on the pH needed.

6 0
3 years ago
An atom has 32 protons, 40 neutrons, and 32 electrons. What is the charge of the atom’s nucleus?
eimsori [14]
The charge is neutral.

To find the charge, subtract the number of electrons from the number of protons. Because they are the same, there is no charge.
8 0
3 years ago
True or False? <br><br> A day is about 12 hours long
7nadin3 [17]

Answer:

false it's 24 hours long.

7 0
2 years ago
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