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3 years ago

I do not get this part of my homework sheet. please help quick

Chemistry

1 answer:

larisa86 [58]3 years ago

6 0

A. The energy stored in the natural gas is potential energy

B. The way to get that energy is by combusting it. It will give off energy in the form of heat.

Can’t really answer C-E

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In which two ways does a balanced chemical equation model the law of<br> conservation of mass?

Alona [7]

Answer:Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions

Explanation:

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3 years ago

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

Zarrin [17]

well there is a certain margin error. If you rounded any number you will not get the right measurement. if you round up when multiplying you will get a larger number then the answer really is and Vise versa.

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4 years ago

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Identify the state of matter with the lowest degree of freedom between the molecules

Elan Coil [88]

A substance in a solid phase is relatively rigid, has a definite volume and shape.

<span>The atoms or molecules that comprise a solid are packed close together and are not compressible.<span>Because all solids have some thermal energy, its atoms do vibrate. However, this movement is very small and very rapid, and cannot be observed under ordinary conditions.</span></span>

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3 years ago

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: A Ne gas sample has a pressure of 1.20 atm and volume of 35.6 L at 27.0ºC. What is the sample volume if the pressure changes t

marishachu [46]

Answer:

Explanation:

The exercise can be resolved by applying the General Gas Law, which establishes the relationship between the Pressure, Volume and Temperature of a gas in its initial state and its final state. Mathematically, it is:

$\frac{P1 x V1}{T1} = \frac{P2 x V2}{T2}$

To use this equation, you need to convert the temperatures from Celsius scale to Kelvin scale (absolute scale), and to make this conversion the formula is used:

T (K) = t (° C) + 273.15

We replace the values and obtain the absolute temperatures of the initial state (T₁) and the final state (T₂)

T₁ (K) = 27.0 ° C + 273.15 = 300.15 K

T₂ (k) = 77.0 ° C + 273.15 = 350.15 K

Clearing in the equation of the general gas law V₂, and replacing the other values provided by the statement, the equation and result would be:

$V2 = \frac{P1 x V1 x T2}{T1 x P2} = \frac{1.20atm x 35.6L x 350.5K}{300.15K x 3.60 atm} = 13.84L$

Therefore, <em>the final volume occupied by the gas sample Ne is 13.84 L</em>

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3 years ago

Carbon reacts with oxygen to produce carbon dioxide (CO2 (g), Delta. Hf = –393. 5 kJ/mol) according to the equation below. Upper

Komok [63]

The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.

The change in enthalpy of the reaction is given by the energy of the product and the energy of reactant difference.

The chemical equation for the reaction is:

$\rm C \;(s)\;+\;2\;O_2\;(g)\;\to\;CO_2\;(g)$

<h3>Computation for the enthalpy change</h3>

The standard enthalpy change for carbon dioxide is -393.5 kJ/mol

The standard enthalpy change for oxygen is 0 kJ/mol

The change in enthalpy of reaction is given as:

$\rm \Delta \textit H=CO_2-2\;\times\;O_2\\\Delta \textit H=-393.5\;kJ/mol-2\;\times\;0\;kJ/mol\\\Delta \textit H=-393.5\;kJ/mol$

The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.

Learn more about change in enthalpy, here:

brainly.com/question/1301642

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2 years ago