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3 years ago

What are the common uses of acetone and formalin?

2 answers:

3 0

Acetone It is good for plastics and some synthetic fibers. It is used for cleaning tools. it is used for thinning polyester resin.Formalin is used as an antiseptic, and preservative. It is also used to treat the fungal diseases of fish. Formaldehyde solutions can be used as disinfectants and germicides, as they quickly kill bacteria and other potentially harmful microorganisms

lorasvet [3.4K]3 years ago

3 0

Answer:

cetone is mainly used in the manufacturing of many different chemicals and also used as solvent in items such as remover for nail polish, paint, lacquers and finishes, cleaners, etc.

Formaline is used as antibacterial, preservative and disinfectant. It's the pungent gas formaldehyde's 37% aqueous solution and also has the formula HCHO.

Explanation:

Acetone is widely used to wash nail however formalin, often identified as formaldehyde, is often used in embalming.

Acetone is mainly used in the manufacturing of many different chemicals and also used as solvent in items such as remover for nail polish, paint, lacquers and finishes, cleaners, etc.

Formaline is used as antibacterial, preservative and disinfectant. It's the pungent gas formaldehyde's 37% aqueous solution and also has the formula HCHO.

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90 POINTSSSS!!!

Katarina [22]

Answer:

$\large \boxed{\text{-2043.96 kJ/mol}}$

Explanation:

Assume the reaction is the combustion of propane.

Word equation: propane plus oxygen produces carbon dioxide and water

Chemical eqn: C₃H₈(g) + O₂(g) ⟶ CO₂(g) + H₂O(g)

Balanced eqn: C₃H₈(g) + 5O₂(g) ⟶ 3CO₂(g) + 4H₂O(g)

(a) Table of enthalpies of formation of reactants and products

$\begin{array}{cc}\textbf{Substance} & \textbf{$\Delta_{\text{f}}$H/(kJ/mol}) \\\text{C$_{3}$H$_{8}$(g)} & -103.85 \\\text{O}_{2}\text{(g)} & 0 \\\text{CO}_{2}\text{(g)} & -393.51 \\\text{H$_{2}$O(g)} & -241.82\\\end{array}$

(b)Total enthalpies of reactants and products

$\Delta_{\text{rxn}}H^{\circ} = \sum \left( \Delta_{\text{f}} H^{\circ} \text{products}\right) - \sum \left (\Delta_{\text{f}}H^{\circ} \text{reactants} \right)\\= \text{-2147.81 kJ/mol - (-103.85 kJ/mol)}\\= \text{-2147.81 kJ/mol + 103.85 kJ/mol}\\= \textbf{-2043.96 kJ/mol}\\\text{The enthalpy change is $\large \boxed{\textbf{-2043.96 kJ/mol}}$}$

ΔᵣH° is negative, so the reaction is exothermic.

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Try the same filtering method with the salt water. What happened? Taste the

enyata [817]

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pochemuha

Answer:

it is less dense than oxygen gas.

Explanation:

Hydrogen is the simplest chemical element that exists. The symbol for the chemical element Hydrogen is "H" and it is a colourless, tasteless, odorless, and highly flammable gas.

Hydrogen is a chemical element found in group (1) of the periodic table and as such it has one (1) electrons in its outermost shell. Therefore, Hydrogen has an atomic number of one (1) and a single valence electrons because it has only one proton and one electron in its nucleus.

In Chemistry, the properties of a chemical element that can be observed and measured without changing its chemical nature is known as a physical property. It includes density, color, freezing point, opacity, smell, melting point, viscosity, etc.

Hence, the statement which describes a physical property of hydrogen is that it is less dense (density) than oxygen gas.

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spayn [35]

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