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Cerrena [4.2K]
3 years ago
9

Describe the position of metal ,non metals and metollieds in perodic tables​

Chemistry
1 answer:
siniylev [52]3 years ago
4 0
Non metals and metollids in periodic tables are the same how this helps ;)
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What is the molarity of a solution containing 5 moles of solute in 250 milliliters of solution?
ivolga24 [154]
M=mol/L
= 5/.25
=20
6 0
3 years ago
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What is reduction potential?​
Shtirlitz [24]

Answer:

A reduction potential measures the tendency of a molecule to be reduced by taking up new electrons. ... Standard reduction potentials can be useful in determining the directionality of a reaction. The reduction potential of a given species can be considered to be the negative of the oxidation potential.

Explanation:

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How many moles of iron in a sample that contains 7.91×10^23 atoms of iron?
vazorg [7]

Answer: 1.31

Explanation:  

No.of moles = given no.of atoms/Avagadro number

= 7.91×10^23 / 6.022 x 10^23

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therefore, no.of moles = 1.31

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5 0
3 years ago
How many g are in 2.39kg of magnesium powder​
Oliga [24]

Answer:

2.3 Work with the numerator first: 165 mg is 0.165 g. ... 2.9 (a) 1 mg Mo 1 10 3 g

Explanation:

im pretty sure this is the answer

5 0
3 years ago
300 moles of sodium nitrite are needed for a reaction. the solution is 0.450 m. how many ml are needed?
miv72 [106K]

Answer:

\boxed{\text{667 000 mL}}

Explanation:

\text{Molar concentration} = \dfrac{\text{moles}}{\text{litres}}\\\\c = \dfrac{n}{v}

Data:

c = 0.450 mol·L⁻¹

n = 300 mol

Calculation:

\begin{array}{rcl}0.450 & = & \dfrac{300}{V}\\\\0.450V& = & 300\\\\V & = & \dfrac{300}{0.450}\\\\V & = & \text{667 L} =\textbf{667 000 mL}\end{array}\\\text{The volume of solution needed is }\boxed{\textbf{667 000 mL}}

4 0
3 years ago
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