According to Gay -Lussac's law, the pressure of the can if it is heated to 1270°C is 4295.53 mm Hg.
It is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.
The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .If a graph of pressure versus temperature is plotted it is a straight line which passes through the origin .
The equation is given as, P₁/T₁=P₂/T₂
On substitution of values as ,P₁=760 mm Hg,T₁=273 K,T₂=1543 K
P₂=1543×760/273=4295.53 mm Hg.
Thus, the pressure of gas is 4295.53 mm Hg if it is heated up to 1270°C.
Learn more about Gay-Lussac's law,here:
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(2) oxidization number
(3) number of neutrons
(4) number of valence electrons
C. buffering
D. half-reaction
the answer is oxidizing look it up
Also i took the test
Answer:
Hygroscopic substances
Explanation:
Hygroscopic compounds are those that absorb moisture and a large amount of water and they become wet. They should not be confused with deliquescent substances that absorb water and forms solution.
Hygroscopic substances froms pasty substances and not solution while the liquid ones only becomes diluted. Examples are sodium trioxonitrate(v) (NaNO₃), copper (ii) oxide CuO, and concentrated tetraoxosulphate (vi) acid (H₂SO₄)
Hydrophilic substances, like cellulose found in cotton and paper pulp, can soak up large amounts of water. Some chemical compounds, such as sodiumcarbonate decahydrate and copper(II) sulfate pentahydrate, have this property. Moreover, phosphorus(V) oxide, although used for removing water from compounds, also shows a great affinity for water.
A compound that has the ability to soak up large amounts of water is termed a hydrophilic substance. Hydrophilic substances are attracted to water, absorbing it readily. For example, cotton and paper pulp, used in towels, are made of molecules of cellulose that contain many –OH groups.
Water molecules are attracted to these -OH groups and form hydrogen bonds with them, drawing large amounts of H₂O up the cellulose fibers. Additionally, some compounds like sodium carbonate decahydrate and copper(II) sulfate pentahydrate also have the ability to soak up water. Another example is phosphorus(V) oxide, which has a great affinity for water and is used for removing water from compounds.
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'Heavy' hydrogen (the isotope deuterium) , 2/1H is involved ,
[2= mass number, 1= atomic (proton) number]
2/1H + 2/1H → 3/2He + 1/0n
Answer:
Energy is given off or absorbed.
Explanation:
A P E X
Answer: B. silver sulfide
Explanation:
The law of conservation of mass states that atoms cannot be created nor destroyed in a chemical reaction, so an element that is NOT on the reactants side (the left side) CANNOT be on the products side (the right side), because that element cannot be created in a chemical reaction.
Our reactants are silver and sulfur, so only silver and sulfur will be in the products, so that eliminates lead bromide and glucose, because they do not have silver nor sulfur in them. Sulfuric acid has sulfur in it, but it also has oxygen and hydrogen, but no silver, so that choice is eliminated as well. That leaves silver sulfide, which is Ag₂S.
I hope this helps! :)
In the given reaction equation, silver + sulfur, the missing compound that is formed is silver sulfide.
Silver (Ag) is a metal, and sulfur (S) is a non-metal. When these two elements react, they combine to form a compound called silver sulfide (Ag2S).
It's important to note that the subscript 2 in Ag2S indicates that there are two silver atoms bonded to one sulfur atom. This balanced formula accurately represents the compound formed in the reaction.
Therefore, the missing compound from the equation is B. silver sulfide.