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Artemon [7]
3 years ago
10

The (triangle)Hrxn of formation of carbon dioxide is negative. Which statement is true? The reaction is endothermic. The reactio

n is exothermic. The amount of carbon dioxide is more than the amount of reactants. The amount of carbon dioxide is less than the amount of reactants.
Chemistry
2 answers:
ANEK [815]3 years ago
7 0
The negative ion reactions that consist of the formation of carbon dioxide in the atmosphere is generally an exothermic reaction. By definition, an exothermic reaction takes place when the chemical process eventually releases heat as its by-product. It is in contrast in endothermic process wherein heat is absorbed.
IRISSAK [1]3 years ago
5 0

Answer:The reaction is exothermic.

Explanation:

Enthalpy of Formation (\Delta H_{rxn}): It is defined as change in enthalpy when one mole of substance is formed at standard temperature and pressure from its pure elements under same conditions.

1) \Delta H_{rxn}= negative

When the energy is released during formation of compound in a chemical reaction that is an Exothermic reaction.

2) \Delta H_{rxn}= positive

When the energy is absorbed during the formation of compound in a chemical reaction that is an Endothermic reaction

The \Delta H_{rxn}of formation of carbon dioxide is negative means that the reaction is exothermic reaction.

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Is hydrogen and sulfur ionic or covalent
Nikitich [7]

Answer: The bond between a hydrogen atom and a sulfur atom is nonpolar covalent, so the electrons are shared.

5 0
3 years ago
Convert molecules of vitamin d (molar mass 384.7 g/mol) to grams of vitamin d.
velikii [3]

The 6.023 * 10²³  molecule means  384.7 grams of Vitamin D.

<h3>What is a mole ?</h3>

A mole is a universal unit used to measure large number of atoms , molecules of an element.

one mole is equal to the Avogadro's Constant.

Mole is equal to the ratio of the mass of a compound to its molecular weight

It is given that Vitamin D is present

no. of molecule = 6.023 * 10²³

6.023 * 10²³ molecule constitutes of 1 mol

1 mole  is equal to the molar mass of a compound/ element

Therefore 1 mole = 384.7grams of Vitamin D

and hence 6.023 * 10²³  molecule means 384.7 grams of Vitamin D.

To know more about Mole

brainly.com/question/26416088

#SPJ1

3 0
2 years ago
Two monoprotic acid solutions (A and B) are titrated with identical NaOH solutions. The volume to reach the equivalence point fo
nasty-shy [4]

Answer:

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Explanation:

4 0
3 years ago
What chemical process is used to convert oils into fats and semi solids
dem82 [27]
This process is called hydrogenation. It involves the conversion of oils that are liquid into semi-solid fats. Example products that makes use of this process is the margarine and shortenings. Hope this answers the question. Have a nice day.
6 0
3 years ago
For this exercise, you can simulate the described conditions by changing the values in the run experiment tool of the simulation
Furkat [3]
1) ideal gas law: p·V = n·R·T.
p - pressure of gas.
V -volume of gas.
n - amount of substance.
R - universal gas constant.
T - temperature of gas.
n₁ = 0,04 mol, V₁ = 0,06 l.
n₂ = 0,07 mol, V₂ = 0,06 · 0,07 ÷ 0,04 = 0,105 l.
2) V₁ = 0,06 l, T₁ = 240,00 K.
T₂ = 340,00 K, V₂ = 340 · 0,06 ÷ 240 = 0,05 l.
3 0
3 years ago
Read 2 more answers
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