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2 years ago

In the chemical equation H, O2 (aq) --> H2O(1) + O2(g), the O2 is a

Chemistry

1 answer:

kogti [31]2 years ago

5 0

Answer:

dtds the temperature of a gas station and the problem is that the volume of a gas station and the temperature and pressure on the volume of emails of the

Explanation:

dyrs the temperature and regards Eric a system generated mail from your intra day of the temperature of the volume and weight and congratulationsgdaftsdttddswhdhj. v of the temperature and the problem please let me to do to get the temperature of a gas station and congratulations Dr suite and I will be in the temperature the temperature of the volume and weight and submit report for the temperature and pressure on the volume and congratulations Dr suite and I'mhsdf to gh

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Which phase of matter has a fixed volume but variable shape?

jek_recluse [69]

The answer is "Liquid".

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3 years ago

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Even though so much energy is required to form a metal cation with a 2+ charge, the alkaline earth metals form halides with gene

nasty-shy [4]

The ∆Hrxn of the reaction is -394.5kJ/mol.

<h3>What is alkaline earth metal? </h3>

The alkaline earth metals are those elements which correspond to group 2 of the modern periodic table.

All elements of this group forms a cation of +2 charge.

The other elements of this group are:

Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.

<h3>What is Halogen? </h3>

The Halogen elements are present in group 17 of the modern periodic table.

All elements of this groups forms anions of -1 charge.

The elements of this group are:

Fluorine, Chlorine, bromine, iodine, and astatine.

∆Hrxn = ∆H(bond broken) - ∆H(bond formed)

We have following data of bond energy in kJ/mol:

Mg—Mg = 738

Cl—Cl = -349

Mg—Cl = 783.5

Since, one mole of Mg react with one mole of Cl atom to form one mole of MgCl

∆Hrxn = 738-349-783.5

∆Hrxn = -394.5kJ/mol.

Thus, we concluded that the ∆Hrxn of the reaction is -394.5kJ/mol.

learn more about bond energy:

brainly.com/question/13526463

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1 year ago

How do scientists test their ideas

blondinia [14]

Answer:

They test it using the scientific method.

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3 years ago

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Why can’t you see the stars very well at night like you could 50 years ago

Elenna [48]

Answer:Artificial light from cities has created a permanent "skyglow" at night, obscuring our view of the stars. Here's their map of artificial sky brightness in North America, represented as a ratio of "natural" nighttime sky brightness. In the black areas, the natural night sky is still (mostly) visible.

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2 years ago

Polar bears give birth and hunt on sea ice. Which of the following would help polar bears survive during the melting of Arctic i

galina1969 [7]

i think the answer is the second one

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3 years ago

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