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Stels [109]
3 years ago
13

HELP quickly please!!!

Chemistry
1 answer:
forsale [732]3 years ago
7 0

Answer:

It is a strong acid.

Explanation:

  • A strong acid is any acid that is completely ionized in solutions to release the greatest number of hydronium ions or protons when placed in a solution.

<em>So, when 99.9% of a substance dissociates to release hydronium ions. It is considered as a strong acid.</em>

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A reaction between 46 grams of sodium and 71 grams of chlorine formed table salt and heat.
vazorg [7]

Answer:

d. 117 grams

Explanation:

The mass of the table salt produced will be 117 grams.

Chemical reactions obey the law of conservation of mass. In this regard, matter is neither created nor destroyed in the course of a chemical reaction. It is expected that the mass of the reactants and products remain the same.

 The reaction expression:

         2Na + Cl₂  →   2NaCl

So, mass of sodium  = 46g

      mass of chlorine formed = 71g

Mass of NaCl  = 46 + 71 = 117g

7 0
3 years ago
The energy content of food is typically determined using a bomb calorimeter. Consider the combustion of a 0.22-g sample of butte
iren2701 [21]

Answer: The energy of combustion of butter is 31.5 kJ/g

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=C\times \Delta T

Q = Heat absorbed by calorimeter =?

C = heat capacity of calorimeter = 2.67kJ/^0C

Initial temperature of the calorimeter  = T_i = 23.5^0C

Final temperature of the calorimeter  = T_f  = 26.1^0C

Change in temperature ,\Delta T=T_f-T_i=(26.1-23.5)^0C=2.6^0C

Putting in the values, we get:

Q=2.67kJ/^0C\times 2.6^0C=6.94kJ

As heat absorbed by calorimeter is equal to heat released by combustion of butter

Q=q

Heat released by 0.22 g of butter = 6.94 kJ

Heat released by 1g of butter = \frac{6.94}{0.22}\times 1=31.5kJ

The energy of combustion of butter is 31.5 kJ/g

8 0
3 years ago
Which is an endothermic process?
natita [175]

Answer: Option (d) is the correct answer.

Explanation:

Endothermic process is a process in which energy or heat is absorbed by reactant species.

For example, melting of ice cubes is an endothermic process as it is absorbing heat from the surrounding and gives a cooling effect.

Thus, we can conclude that the process in which a substance gains energy is an endothermic process.

4 0
4 years ago
Read 2 more answers
Which of the following orbits the nucleus?
Umnica [9.8K]
Electrons orbit the nucleus
8 0
3 years ago
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1. Explain How do scientists<br> know what moon's crust is<br> made of?
Gnesinka [82]

Answer:

Whent he people went to the moon they told them what it was

Explanation:

4 0
3 years ago
Read 2 more answers
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