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3 years ago

Burning 10g of propane produces twice as much carbon dioxide as burning 5g of propane what law does it apply?

1 answer:

7 0

This corresponds to the law of multiple proportions which states that when a certain amount of compound reacts to form another compound, the ratio of the amounts between the reactants and the products are a fraction of simple or whole numbers.

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Heat transfer is the movement of heat from a hotter object to a cooler object. true or false

victus00 [196]

Answer: The given statement is True.

Explanation:

The heat will move from hotter object to the cooler object in search of thermal equilibrium. Heat transfer will only stop when both the bodies are at the same temperature.

Heat transfer can be done using conduction , convection or radiation.

The statement that Heat transfer is the movement of heat from a hotter object to a cooler object is True.

3 0

3 years ago

What is the heat of reaction when sulfur dioxide reacts with oxygen to form sulfur trioxide? 2so2(g) + o2(g) → 2so3(g) (∆hf0 so2

padilas [110]

Answer : The enthalpy change for this reaction is -193.8 kJ.

Solution :

The balanced chemical reaction is,

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

The expression for enthalpy change is,

$\Delta H=\sum [n\times \Delta H_f(product)]-\sum [n\times \Delta H_f(reactant)]$

$\Delta H=[(n_{SO_3}\times \Delta H_{SO_3})]-[(n_{O_2}\times \Delta H_{O_2})+(n_{SO_2}\times \Delta H_{SO_2})]$

where,

n = number of moles

$\Delta H_{O_2}=0$ (as heat of formation of substances in their standard state is zero

Now put all the given values in this expression, we get

$\Delta H=[(2\times -395.7)]-[(1\times 0)+(2\times -298.8)]$

$Delta H=-193.8kJ$

Therefore, the enthalpy change for this reaction is, -193.8 KJ

4 0

3 years ago

Assuming 100% dissociation, calculate the freezing point and boiling point (in °C) of a solution with 83.6 g of AgNO 3 in 1.00 k

Thepotemich [5.8K]

Answer:

Freezing point: - 1.83ºC

Boiling point: 100.50ºC

Explanation:

The freezing point and boiling point of solvents, when a solute is added, will change accordingly to the concentration of the solute particles.

The freezing point will decrease and the boiling point will increase. These are two colligative properties.

Find attached the file with the whole answer, as the site is not uploading the answer in here.

Download pdf

3 0

4 years ago

An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What are its atomic number, atomic mass, and net charge?

kirill [66]

The answer to ur question corresponds to the information u provided in option A.
please mark me brainiest on this and thank me

6 0

4 years ago

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Ice cubes are sealed inside a Ziploc bag. The ice cubes and the bag together have a mass of 70.1 grams. The ice cubes melt. How

Simora [160]

The mass of the liquid water will be greater because it takes more space and room. will ice cubes arnt liquid and can only take a little space of room.

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4 years ago

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