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prohojiy [21]
3 years ago
11

Help me pls I will mark you as brain

Chemistry
1 answer:
Liono4ka [1.6K]3 years ago
6 0

Answer:

D. 1, 2, and 3

Explanation:

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melisa1 [442]
You would be billion years old
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What is the correct formula for combining Mg2+ and Br1+
True [87]

Answer: The correct formula is MgBr_2

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here magnesium is having an oxidation state of +2 called as Mg^{2+} cation and bromine Br^{-} is an anion with oxidation state of -1. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral MgBr_2.

The cations and anions being oppositely charged attract each other through strong coloumbic forces and form an ionic bond.

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3 years ago
Identify any solutes and solvents present in a mixture of 0.05 mol ethanol, 1 liter water, and 0.2 g hydrogen
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Answer:

Water is the solvent

Both the ethanol and the hydrogen peroxide are the solute

Explanation:

Both the hydrogen peroxide and ethanol are sisobable in water.

There are 0.05 moles of ethanol.

1 litreof water contains 55.55 moles of water.

0.2 g of hydrogen peroxide contains 0.2/34 = 0.0059 moles of hydrogen peroxide (the 34 is the molar mass of hydrogen peroxide).

Since there are more moles of water, water becomes the solvent and the other two liquids dissolve in it.

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Imluwensya ng lipunan​
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?

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