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2 years ago

14

In the compound Al2O3, the ratio of aluminum to oxygen is?

1 answer:

Triss [41]2 years ago

7 0

Answer:

2:3

Explanation:

The compound whose chemical formula is given in the question is called Aluminium oxide. It is structurally made up of two atoms of aluminum (Al) and three atoms of oxygen (O).

Based on the above, the atomic ratio of aluminum to oxygen can be calculated as 2:3 i.e. 2 atoms of aluminum to 3 atoms of oxygen.

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kompoz [17]

Considering the combined law equation, the new temperature is -244.56 °C or 28.44 K.

<h3>Boyle's law</h3>

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant: if the pressure increases, the volume decreases while if the pressure decreases, the volume increases.

Mathematically, this law states that the multiplication of pressure by volume is constant:

P×V=k

<h3>Charles's law</h3>

Charles's law states that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases while if the temperature of the gas decreases, the volume decreases.

Mathematically, Charles' law states that the ratio of volume to temperature is constant:

$\frac{V}{T} =k$

<h3>Gay-Lussac's law </h3>

Gay-Lussac's law states that the pressure of a gas is directly proportional to its temperature: increasing the temperature will increase the pressure, while decreasing the temperature will decrease the pressure.

Mathematically, Gay-Lussac's law states that the ratio of pressure to temperature is constant:

$\frac{P}{T} =k$

<h3>Combined law equation</h3>

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

$\frac{PxV}{T} =k$

Considering an initial state 1 and a final state 2, it is fulfilled:

$\frac{P1xV1}{T1} =\frac{P2xV2}{T2}$

<h3>New temperature</h3>

In this case, you know:

P1= 1 atm= 760 mmHg
V1= 15 L
T1= -30 °C= 243 K (being 0 °C= 273 K)
P2= 58 mmHg
V2= 23 L
T2= ?

Replacing in the combined law equation:

$\frac{760 mmHgx15 L}{243 K} =\frac{58 mmHgx23 L}{T2}$

Solving:

$T2x\frac{760 mmHgx15 L}{243 K} =58 mmHgx23 L$

$T2 =\frac{58 mmHgx23 L}{\frac{760 mmHgx15 L}{243 K}}$

<u><em>T2= 28.44 K= -244.56 °C</em></u>

Finally, the new temperature is -244.56 °C or 28.44 K.

Learn more about combined law equation:

brainly.com/question/4147359

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6 0

1 year ago

In an experiment, 40 g of grain alcohol releases 2,950 ) as it cools from 51 °C. Calculate the final temperature of the grain al

Masja [62]

Explanation:

I did round the answer for it to match the sign fig, so you can unround it if you want to

3 0

2 years ago

the ph of a naoh solution is 12.05. what is the concentration of [oh-] of the naoh solution? express your answer in standard not

Vesnalui [34]

Answer:

12.05,oei

Explanation:

ceftfetwf

4 0

2 years ago

hich of the following is best described as a decomposition reaction? HCl + NaHCO3 → H2O + CO2 + NaCl 2Na + Cl2 → 2NaCl 2HgO → 2H

sp2606 [1]

Answer:

The answer to your question is: c

Explanation:

A descomposition reaction is a chemical reaction in which the only one reactant yields two or more products.

a) HCl + NaHCO3 → H2O + CO2 + NaCl

This is not a descomposition reaction because there are two reactants not one, this option is incorrect.

b) 2Na + Cl2 → 2NaCl

THis option is also incorrect because there are two reactants in descompositin reaction there is only one reactant.

c) 2HgO → 2Hg + O2

There are only one reactant that yields 2 products, this is a descomposition reaction.

d) AgNO3 + NaCl → AgCl + NaNO3

THis is not a descomposition reaction because there are two reactants.

6 0

3 years ago

What are the characteristics of fluids

zvonat [6]

a substance that has no fixed shape and yields easily to external pressure; a gas or a liquid.

5 0

3 years ago