How is hydrogen isolated from water

2 answers:

8 0

To extract hydrogen from water, researchers insert two electrodes across the water and pass current, which can separate the hydrogen from water. The process called electrolysis of water. ... An electric field applied through the cobalt oxide to water molecules resulted in the electrolysis of water

Alexus [3.1K]3 years ago

6 0

Hydrogen gas is an environment-friendly fuel — it produces water on combustion in the presence of oxygen. ... To extract hydrogen from water, researchers insert two electrodes across the water and pass current, which can separate the hydrogen from water. The process called electrolysis of water.

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7. What is the molarity of the nitrate ion that is found in a solution made by dissolving 6.25g

tekilochka [14]

Answer:

0.271 M NO₃⁻

Explanation:

To find the molarity of the nitrate ion (NO₃⁻), you need to (1) convert grams to moles (via molar mass), then (2) convert moles Al(NO₃)₃ to moles NO₃⁻, then (3) convert mL to L, and then (4) calculate the molarity. When (Al(NO₃)₃) dissolves in water, it dissociates into 3 nitrate ions. The final answer should have 3 sig figs.

(Steps 1 + 2)

Molar Mass (Al(NO₃)₃): 26.982 g/mol + 3(14.007 g/mol) + 9(15.998 g/mol)

Molar Mass (Al(NO₃)₃): 212.985 g/mol

1 Al(NO₃)₃ = 1 Al³⁺ and 3 NO₃⁻

6.25 g Al(NO₃)₃ 1 mole 3 moles NO₃⁻
------------------------- x ----------------- x ----------------------- = 0.0880 moles NO₃⁻
212.985 g 1 mole Al(NO₃)₃

(Steps 3 + 4)

325.0 mL / 1,000 = 0.3250 L

Molarity = moles / volume

Molarity = 0.0880 moles / 0.3250 L

Molarity = 0.271 M

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1 year ago

Select the foods below that make up the 8 most common allergens.

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3 years ago

Which of the following is a characteristic property of the alkaline earth

34kurt

"They are harder than alkali metals" is a characteristic property of the alkaline earth metals.

<u>Option:</u> C

<u>Explanation:</u>

The strength of metallic bond is stronger in alkaline earth metals than alkali metals because of the existence of 2 electrons in its outermost or valence shell relative to alkali metal which has only 1 electron in valence shell. Thus alkaline earth metals are therefore harder than the alkali metals.

They are considered alkaline since they formulate solutions that have a pH higher than 7, rendering them alkaline or bases. Radium is produced by uranium decay, not all alkaline elements are radioactive. It's very toxic, and the handling is risky. Calcium and magnesium are essential for animals and plants.

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4 years ago

A person throws a ball up into the air, and the ball falls back toward Earth. At which point would the kinetic energy be the low

dybincka [34]

It would be d bc when it’s at its lowest point it means not that much energy and that would be its lowest point which is D

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A recipe requires 10 grams of salt. According to Weber’s constant for saltiness, which is 1/5, how much more salt must a chef ad

ludmilkaskok [199]

Answer:

2 grams of salt must be added by chef to make the recipe noticeably saltier.