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dusya [7]
3 years ago
5

What is reduced in the reaction below?

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
7 0

Answer:

{ \underline{ \sf{O _{2}  \: is \: reduced}}}

Explanation:

Reduction means when a reactant loses oxygen or gains hydrogen.

In the equation:

Hydrogen molecule, it neither gains nor loses hydrogen, but it gains oxygen. so :

{ \sf{H _{2}  \: is \: excluded}}

Oxygen molecule loses one oxygen atom, and gains four hydrogen atoms, hence it is reduced.

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Which of the following assumptions appears reasonable for the isothermal process? H20 (liq, 1 bar) → H2O (liq, 1300 bar), T = 20
Vitek1552 [10]

Answer : The assumptions appears reasonable for the isothermal process is, \Delta U=0 and \Delta H=0

Explanation :

First law of thermodynamic : It states that the energy can not be created or destroyed, it can only change or transfer from one state to another state.

As per first law of thermodynamic,

\Delta U=q+w

The expression for internal energy is:

\Delta U=nC_vdt

The expression for enthalpy is:

\Delta H=nC_pdt

where,

\Delta U = internal energy

q = heat

w = work done

n = number of moles

C_v = specific heat capacity at constant volume

C_p = specific heat capacity at constant pressure

dt = change in temperature

As we know that, the term internal energy and enthalpy is the depend on the temperature and the process is isothermal that means at constant temperature.

T = constant

\dt = 0

So, at constant temperature the internal energy and enthalpy is equal to zero. That means,

\Delta U=0 and \Delta H=0

3 0
4 years ago
Help fast asap
Dmitriy789 [7]

The cladogram of the kingdom Animalia shows the relationship of selected animals based on their shared anatomical features. The black numbered squares represent features that are critical for forming each branch in the animal kingdom. Square one represents a dorsal nerve cord, which means the animals in all the branches have a dorsal nerve cord.

Which numbered square would represent the trait "mammary glands

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7 0
4 years ago
Read 2 more answers
A monosaccharide is formed from a polysaccharide in what kind of reaction?.
Sever21 [200]

Answer:

Catabolic reactions

Explanation:

Anabolic reactions combine monosaccharides to form polysaccharides, fatty acids to form triglycerides, amino acids to form proteins, and nucleotides to form nucleic acids. These processes require energy in the form of ATP molecules generated by catabolic reactions.

7 0
3 years ago
Which of the following is not the same as 5.63 grams?<br> 5,630 mg<br> 0.563 hg <br> 0.00563 kg
Lady bird [3.3K]
Units of measure is defined as a the magnitude of a certain quantity. There are a lot of units that we can use for mass. Kilograms, grams, tons, pounds and slugs are some of the examples. There are some units where certain prefixes changes its magnitude. One thousand grams is one kilogram. One thousand mg is one gram. 5.63 grams is 5,630 mg and 0.00563 kg is 5.63 grams. Hence the answer here is 0.563 hg. 
6 0
3 years ago
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What type of chemical reaction is <br>4Fe + 30, ---&gt; 2Fe203​
aliina [53]

Answer:

oxidation reaction.

Explanation:

Zerovalent iron is oxidized to give  

Zerovalent oxygen is reduced from  

. Each year significant amounts of money are spent to prevent the corrosion of structural steel. It is inevitably a losing battle.

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