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Marrrta [24]
3 years ago
14

What is the definition of phosphates

Chemistry
2 answers:
DIA [1.3K]3 years ago
8 0

Explanation:

hsbsbdkswlqpppqqppqpqppqpq

Aloiza [94]3 years ago
3 0
A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.
You might be interested in
How is the mole of a used to express the mass of a substance explain​
diamong [38]

Answer:

See explanation

Explanation:

The mole refers to the amount of substance contained in 12 g of carbon-12. It was arbitrarily related to the number of elementary entities in 12 g of carbon -12 by Prof. Avogadro.

The number of moles of a substance is obtained as the mass of the substance divided by the mass of one mole of the substance (molar mass). Hence when the number of moles is known, the mass is now;

number of moles * molar mass

8 0
3 years ago
Which of the following is the electrical charge on an atom that contains 6 electrons, 3 neutrons, and 4 protons?
Y_Kistochka [10]

Answer:

Its electrical charge is -2.

4 0
3 years ago
Can someone please help me with this? This is due today, please please help me!
Elanso [62]
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2><h2>_____________________________________</h2>

ATOMIC NUMBER: It is the number of protons present in the nucleus of every atom

MASS NUMBER: It is the number of nucleon. Nucleon are the number of proton and neutrons present in the nucleus.

PROTON NUMBER: Proton number equal to the atomic number.

ELECTRON NUMBER: Electron Number is equal to the atomic number.

NEUTRON NUMBER: It is Mass Number - Atomic Number.

CHARGE: It is due to the addition or removal of the electron. + charge when electron removed and - charge when electron is added.

SYMBOL: It is represented as,

                                                X^Z_A

Z is Mass Number

A is Atomic Number

<h2>_____________________________________</h2><h2>Worksheet:</h2>

(I) ATOMIC NUMBER: 17

    MASS NUMBER: 35.5

    PROTON NUMBER: 17

    ELECTRON NUMBER: 17

    NEUTRON NUMBER: 18.5

    CHARGE: 0

<h2>_____________________________________</h2>

(II) ATOMIC NUMBER: 71

    MASS NUMBER: 180

    PROTON NUMBER: 71

    ELECTRON NUMBER: 71

    NEUTRON NUMBER: 109

    CHARGE: 0

<h2>_____________________________________</h2>

(III)  ATOMIC NUMBER: 40

    MASS NUMBER: 86

    PROTON NUMBER: 40

    ELECTRON NUMBER: 38

    NEUTRON NUMBER: 46

    CHARGE: +2

<h2>_____________________________________</h2>

(IV)  ATOMIC NUMBER: 92

    MASS NUMBER: 238

    PROTON NUMBER: 92

    ELECTRON NUMBER: 86

    NEUTRON NUMBER: 146

    CHARGE: +6

<h2>_____________________________________</h2>

(V) ATOMIC NUMBER: 82

    MASS NUMBER: 206

    PROTON NUMBER: 82

    ELECTRON NUMBER: 78

    NEUTRON NUMBER: 124

    CHARGE: +4

<h2>_____________________________________</h2>

(VI) ATOMIC NUMBER: 34

    MASS NUMBER: 79

    PROTON NUMBER: 34

    ELECTRON NUMBER: 36

    NEUTRON NUMBER: 45

    CHARGE: -2

<h2>_____________________________________</h2>

(VII) ATOMIC NUMBER: 48

    MASS NUMBER: 113

    PROTON NUMBER: 48

    ELECTRON NUMBER: 49

    NEUTRON NUMBER: 65

    CHARGE: -1

<h2>_____________________________________</h2>

(VIII) ATOMIC NUMBER: 21

    MASS NUMBER: 42

    PROTON NUMBER: 21

    ELECTRON NUMBER: 21

    NEUTRON NUMBER: 21

    CHARGE: 0

<h2>_____________________________________</h2>

(IX) ATOMIC NUMBER:

    MASS NUMBER:

    PROTON NUMBER:

    ELECTRON NUMBER:

    NEUTRON NUMBER:

    CHARGE:

<h2>_____________________________________</h2>

(X) ATOMIC NUMBER: 83

    MASS NUMBER: 209

    PROTON NUMBER: 83

    ELECTRON NUMBER: 80

    NEUTRON NUMBER: 126

    CHARGE: +3

<h2>_____________________________________</h2>

(XI) ATOMIC NUMBER: 47

    MASS NUMBER: 108

    PROTON NUMBER: 47

    ELECTRON NUMBER: 47

    NEUTRON NUMBER: 61

    CHARGE: 0

<h2>_____________________________________</h2>

(XII) ATOMIC NUMBER: 49

    MASS NUMBER: 116

    PROTON NUMBER: 49

    ELECTRON NUMBER: 46

    NEUTRON NUMBER: 67

    CHARGE: +3

<h2>_____________________________________</h2>

(XIII) ATOMIC NUMBER: 53

    MASS NUMBER: 128

    PROTON NUMBER: 53

    ELECTRON NUMBER: 54

    NEUTRON NUMBER: 75

    CHARGE: -1

<h2>_____________________________________</h2>

(XIV) ATOMIC NUMBER: 76

    MASS NUMBER: 188

    PROTON NUMBER: 76

    ELECTRON NUMBER: 72

    NEUTRON NUMBER: 112

    CHARGE: +4

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />
4 0
3 years ago
If a temperature increase from 21.0 ∘c to 35.0 ∘c triples the rate constant for a reaction, what is the value of the activation
Airida [17]

Answer:

59.077 kJ/mol.

Explanation:

  • From Arrhenius law: <em>K = Ae(-Ea/RT)</em>

where, K is the rate constant of the reaction.

A is the Arrhenius factor.

Ea is the activation energy.

R is the general gas constant.

T is the temperature.

  • At different temperatures:

<em>ln(k₂/k₁) = Ea/R [(T₂-T₁)/(T₁T₂)]</em>

k₂ = 3k₁ , Ea = ??? J/mol, R = 8.314 J/mol.K, T₁ = 294.0 K, T₂ = 308.0 K.

ln(3k₁/k₁) = (Ea / 8.314 J/mol.K) [(308.0 K - 294.0 K) / (294.0 K x 308.0 K)]

∴ ln(3) = 1.859 x 10⁻⁵ Ea

∴ Ea = ln(3) / (1.859 x 10⁻⁵) = 59.077 kJ/mol.

4 0
3 years ago
How does the formation of water from hydrogen and oxygen demonstrate the conservation of mass? (1 point)
Norma-Jean [14]

Answer:

Water has a chemical formula of H2O . In here, there are two hydrogen atoms and one oxygen atom, and so its mass will be 2+16=18 amu . There are two water molecules formed, and that means the total mass of the products is 18⋅2=36 amu .

4 0
3 years ago
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