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4 years ago

Which of the following correctly describes the decomposition of aqueous NaNO3?

Chemistry

2 answers:

Rina8888 [55]4 years ago

6 0

The molar enthalpy is 447 kJ and the reaction is endothermic

Firdavs [7]4 years ago

5 0

The molar enthalpy is 447 kJ and the reaction is endothermic.

correct 100%

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Calcium carbonate can break down to form calcium oxide and carbon dioxide.

DerKrebs [107]

Answer:

The answer to your question is the third choice.

Explanation:

CaCO₃ ⇒ CaO + CO₂

Check if the reaction is balanced or unbalanced

Reactants Elements Products

1 Calcium 1

1 Carbon 1

3 Oxygen 3

As the number of atoms in the reactant is the same that the number of atoms in the products we conclude that the reaction is balanced.

So the correct answer is balanced because the total number of oxygen atoms is 3.

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3 years ago

Read 2 more answers

Drag the tiles to the correct boxes to complete the pairs.

Sophie [7]

Answer:

Explanation:

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3 years ago

Identify the power of ten that defines each of these prefixes. Input your answers as 10 x where x is the power of ten. nano- ___

Gemiola [76]

Answer: The quantity of every prefix is written below as a power of ten.

Explanation:

In the metric system of measurement, the name of multiples and subdivision of any unit is done by combining the name of the unit with the prefixes.

For Example: deka, hecto and kilo means 10, 100 and 1000 respectively. Deci, centi and milli means one-tenth, one-hundredth, and one-thousandth respectively.

The quantity of these prefixes are written as the power of 10.

For the given prefixes:

Nano: The quantity will be $10^{-9}$

Kilo: The quantity will be $10^3$

Centi: The quantity will be $10^{-2}$

Micro: The quantity will be $10^{-6}$

Milli: The quantity will be $10^{-3}$

Mega: The quantity will be $10^6$

Hence, the quantity of every prefix is written above as a power of ten.

7 0

4 years ago

Does oxygen react with water?

Dmitrij [34]

Answer:

Oxygen does not react with itself, nitrogen, or water under normal conditions. Oxygen does, however, dissolve in water at 20 degrees Celsius and 1 atmosphere. Oxygen also does not normally react with bases or acids.

7 0

3 years ago

Which spectroscopic tool would be best for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane?

german

The NMR spectroscopy will be used for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane.

A spectroscopic method for observing the local magnetic fields surrounding atomic nuclei seems to be nuclear magnetic resonance spectroscopy, also referred to as magnetic resonance spectroscopy as well as NMR spectroscopy.

The identification and study of organic molecules benefit greatly from nuclear magnetic resonance (NMR) spectroscopy. This type of spectroscopy has a straightforward underlying theory. Numerous atom types' nuclei behave like small magnets and frequently align themselves in magnetic fields.

Therefore, the NMR spectroscopy will be used for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane.

To know more about spectroscopy

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4 0

2 years ago