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faust18 [17]
3 years ago
13

Which of the following is an example of a chemical reaction?

Chemistry
1 answer:
nevsk [136]3 years ago
3 0

Answer:

where is the option I can't see plz give the option first the I try to give answer

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If a solution containing 51.429 g of mercury(ii) perchlorate is allowed to react completely with a solution containing 16.642 g
OLga [1]
Hg(No3)2  +NaSO4   --->2NaNO3  +  HgSO4(s)
calculate  the moles  of   each  reactant
moles=mass/molar  mass

moles of  Hg(NO3)2=  51.429g/  324.6  g/mol(molar  mass  of  Hg(NO3)2)=0.158  moles

moles Na2SO4  16.642g/142g/mol=  0.117  moles  of  Na2SO4

Na2SO4  is  the  limiting  reagent in  the   equation   and  by  use  mole  ratio  Na2So4  to  HgSO4  is  1:1   therefore  the  moles  of  HgSO4  =0.117  moles

mass  of  HgSO4=moles  x  molar   mass  of  HgSo4=  0.117 g x  303.6g/mol=  35.5212  grams

7 0
4 years ago
Compare and contrast 10kg of melting ice and 1kg of freezing water address temperature heat flow thermal energy what is the simp
iris [78.8K]

Answer:

10 kg of ice will require more energy than the released when 1 kg of water is frozen because the heat of phase transition increases as the mass increases.

Explanation:

Hello!

In this case, since the melting phase transition occurs when the solid goes to liquid and the freezing one when the liquid goes to solid, we can infer that melting is a process which requires energy to separate the molecules and freezing is a process that releases energy to gather the molecules.

Moreover, since the required energy to melt 1 g of ice is 334 J and the released energy when 1 g of water is frozen to ice is the same 334 J, if we want to melt 10 kg of ice, a higher amount of energy well be required in comparison to the released energy when 1 kg of water freezes, which is about 334000 J for the melting of those 10 kg of ice and only 334 J for the freezing of that 1 kg of water.

Best regards!

7 0
3 years ago
Acid rain can be destructive to both the natural environment and human-made structures. The equation below shows a reaction that
sleet_krkn [62]

Answer:

I would say the correct answer is <em><u>A 200.00 mol</u></em>

Explanation:

Hope this help

Have a nice day

8 0
3 years ago
Which of the following concerning solutions is/are correct? 1. The solvent in a mixture of gases is generally considered to be t
pshichka [43]

Answer: 1. The solvent in a mixture of gases is generally considered to be the substance in greater amount. 2. The solid dissolved in a solution is known as the solute. 3. Solid solutions are called alloys.

Explanation:

A binary solution is made up of two components ,called as solute and another as solvent.

A solute is defined as the component which is present in smaller proportion. It can be in solid, liquid or gaseous phase. A solvent is defined as the component which is present in larger proportion in a solution. It can be in solid, liquid or gaseous phase.

Usually in liquid solutions , solid acts as solute and liquid acts as solvent. For example: In salt solution, salt is the solute and water is the solvent.

Solid solutions contains solid as solute and solid as solvent. These are called as alloys. For example : In brass, zinc is the solute and copper is the solvent.

4 0
3 years ago
The boiling points for a set of compounds in a homologous series can be qualitatively predicted using intermolecular force stren
shepuryov [24]

Answer:

The answer to your question is below

Explanation:

Alkane                      Formula                    Boiling point (°C)

Methane                   CH₄                                     -162

Ethane                      CH₃CH₃                               - 89

Propane                    CH₃CH₂CH₃                        - 42

Butane                      CH₃(CH₂)₂CH₃                     - 0.5

Pentane                    CH₃(CH₂)₃CH₃                      36

Hexane                     CH₃(CH₂)₄CH₃                      69

Heptane                    CH₃(CH₂)₅CH₃                      98

Octane                      CH₃(CH₂)₆CH₃                     126

Nonane                     CH₃(CH₂)₇CH₃                      151

Decane                      CH₃(CH₂)₈CH₃                     174

6 0
4 years ago
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