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3 years ago

HELP! WILL MARK BRAINLIEST! ASAP!!

Chemistry

1 answer:

lilavasa [31]3 years ago

8 0

Answer:

Mn is a Paramagnetic

Explanation:

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What is the percent composition of nitrogen in a 2.57 g sample of Al(NO3)3?

Lisa [10]

Answer:

19.8% of Nitrogen

Explanation:

In the Al(NO₃)₃ there are:

1 atom of Al

3 atoms of N

And 9 atoms of O

The molar mass of Al(NO₃)₃ is:

1 Al * (26.98g/mol) = 26.98g/mol

3 N * (14g/mol) = 42g/mol

9 O * (16g/mol) = 144g/mol

26.98 + 42 + 144 = 212.98g/mol

We can do a conversion using these molar masses to find the mass of nitrogen is the sample, that is:

2.57g * (42g/mol / 212.98g/mol) =

0.51g N

Percent composition of nitrogen is:

0.51g N / 2.57g * 100

= 19.8% of Nitrogen

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2 years ago

Multiple covalent bonds may occur in atoms that contain carbon,nitrogen, or

Arisa [49]

Answer: Multiple covalent bonds may occur in atoms that contain carbon,nitrogen, or oxygen.

8 0

2 years ago

Explain electronegativity and how it relates to both molecular and ionic bonding.

Keith_Richards [23]

Answer:

Mama Mo Blue Tun Po

<h2>Explanation:</h2><h2>HOPE THIS HELPS PO :D</h2>

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2 years ago

That's how you can

kirza4 [7]

2)8/8-9_12-/78)022-/7/$

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3 years ago

You made hypochlorous acid (HOCI) by mixing bleach (NaOCI) with:

Annette [7]

Answer: When bleach is mixed with water, it produces hypochlorous acid.

Explanation:

The chemical name for bleach is sodium hypochlorite. When this compound is reacted with water, it produces hypochlorous acid and sodium hydroxide.

The chemical equation for the reaction of sodium hypochlorite and water follows:

$NaOCl+H_2O\rightarrow HOCl+NaOH$

By Stoichiometry of the reaction:

1 mole of sodium hypochlorite reacts with 1 mole of water to produce 1 mole of hypochlorous acid and 1 mole of sodium hydroxide.

Hence, when bleach is mixed with water, it produces hypochlorous acid.

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3 years ago