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PSYCHO15rus [73]
3 years ago
8

Which characteristics determine an element's reactivity?

Chemistry
2 answers:
Pavel [41]3 years ago
7 0

Answer: valence electrons and electronegativity

Explanation:

Anettt [7]3 years ago
6 0

The characteristics which determines an element's reactivity are; Valence electrons and Electronegativity

As we know;

The reactivity of an element is it's ability to undergo a chemical reaction.

Chemical reactions occur as a result of the transfer of electrons between two atoms.

The electrons involved in chemical reactions are the Valence (outermost) electrons.

The electronegativity value of an element is a measure of its electron affinity, i.e how well it readily accepts or losses electrons.

Ultimately, the characteristics which determines an element's reactivity are; Valence electrons and Electronegativity

Read more:

brainly.com/question/24935600

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The formation of aluminum chloride can be described by the balanced chemical equation.
ikadub [295]

Answer:this is hard tho-

Explanation:

4 0
3 years ago
A solution was made by dissolving 5.10 mg of hemoglobin in water to give a final volume of 1.00 ml. the osmotic pressure of this
Assoli18 [71]

The molecular weight of hemoglobin can be calculated using osmotic pressure

Osmotic pressure is a colligative property and it depends on molarity as

πV = nRT

where

π = osmotic pressure

V = volume = 1mL = 0.001 L

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R = gas constant = 0.0821 L atm / mol K

T = temperature = 25°C = 25 + 273 K = 298 K

Putting values we will get value of moles

moles=\frac{\pi V}{RT}=\frac{0.00195X0.001}{0.0821X298}mol

we know that

moles=\frac{mass}{molarmass}

Therefore

molarmass=\frac{mass}{moles}=\frac{5.10X10^{-3}g}{7.97X10^{-8}}=6.399X10^{4}g

5 0
3 years ago
What is the molar mass of (NH4)3 PO4? 113g, 121g, 149g, 339g
allochka39001 [22]
(NH4)3PO4 :

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Hope this helps!.


7 0
3 years ago
Calculate the mols for 4.2g of a Mg<br>​
hjlf

Answer:

0.175mol

Explanation:

Mole of a substance can be calculated using the formula as follows:

number of moles (n) = mass (m) ÷ molar mass (MM)

According to this question, there are 4.2g of Magnesium (Mg).

Molar mass of Magnesium = 24g/mol, hence, the number of moles of 4.2g of Mg is as follows:

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8 0
3 years ago
Student perfotms a Benedict's test on an unknown substance. He adds reagent(the chemical required to make a color change), and n
elixir [45]

Answer:

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Explanation:

Benedict's solution is an substance used in testing sugars. It is mixture of sodium carbonate, sodium citrate and copper(II) sulfate pentahydrate. It can be used instead of Fehling's solution in testing for the presence of reducing sugars.

Reducing sugars contain the -CHO group. If there is no colour change after the addition of Benedict's solution, then we can conclude that reducing sugars are absent.

7 0
3 years ago
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