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2 years ago

Write a chemical equation for hcl(aq) showing how it is an acid or a base according to the arrhenius definition.

1 answer:

3 0

<span>the arrhenius acid definition is when a substance that will dissociate in water and will form H+ ions. for HCl the chemical equation to satisfy as an arhenius acid definition is, the HCl will dissociate to form H + and Cl- ions. in equation form: HCl ----> H+ + Cl-
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Which of the following is altered by a catalyst?

Vika [28.1K]

<span>In chemistry, a catalyst can speed up the reaction (or make it initiate easier) by altering the activation energy, lowering it enough to allow the reactants to react more easily. Some negative catalysts or inhibitors can do the same by increasing the activation energy.
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2 years ago

Which statements accurately describe elements? Check all that apply.

svet-max [94.6K]

Answer:

Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.

Explanation:

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2 years ago

Read 2 more answers

Use the reaction given below to solve the problem that follows: Calculate the mass in grams of aluminum oxide produced by the re

bearhunter [10]

Answer: 28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} Al=\frac{15.0g}{27g/mol}=0.556moles$

The balanced chemical equuation is:

$4Al+3O_2\rightarrow 2Al_2O_3$

According to stoichiometry :

4 moles of $Al$ produce == 2 moles of $Al_2O_3$

Thus 0.556 moles of $Al$ will produce= $\frac{2}{4}\times 0.556=0.278moles$ of $Al_2O_3$

Mass of $Al_2O_3=moles\times {\text {Molar mass}}=0.278moles\times 102g/mol=28.4g$

Thus 28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal.

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2 years ago

Why is biodiversity important?

vaieri [72.5K]

It makes an ecosystem stable

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2 years ago

If the Kelvin temperature of a gas is doubled, the volume of the gas will increase by ____

liraira [26]

If the Kelvin temperature of a gas is doubled, the volume of the gas will increase by two. It follows Charles law where in for a mixed gas of mass, the volume is directly proportional to the temperature at constant pressure.

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2 years ago