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irinina [24]
3 years ago
10

Science need help now plz wut?

Chemistry
2 answers:
mamaluj [8]3 years ago
8 0

Answer:

The correct answer is A.

igomit [66]3 years ago
3 0

Answer: The answer is A. The mass of the reactants equals the mass of the products.

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Ar (g) is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm.
nata0808 [166]

Answer:

PV=nRt

Therefore n(number of moles)=PV/RT

=>(0.49×3.80)/(0.08206×320)

Therefore Number of moles is = 0.071mols

Explanation: By using the Real gas equation..

PV=NRT .

We can solve for the number of moles of Ar by making N the subject..

Always make sure you pressure is In atm, your Volume is in Litres and temperature in degree Kelvin.

Also Recall the universal gas constant R used in this type of questions which is 0.08206.

Hence l, by making N the subject we get our answer as

3 0
3 years ago
Why the mass of a rusted nail is greater then the nail before it rusted?
kifflom [539]
This is the reaction formula,
4Fe+3O2=2Fe2O3
<span>3Fe+202=Fe3O4
it has o</span>xygen atom after it's rusted
6 0
3 years ago
a sealed container filled with argon gas at 35 c has a pressure of 832 torr. if the volume of the container is decreased by a fa
lesya692 [45]

Answer:

If the volume of the container is decreased by a factor of 2 the pressure is is increased by the same factor to 1664 torr.

Explanation:

Here we have Boyle's law which states that, at constant temperature, the volume of a given mass of gas is inversely proportional to its pressure

V ∝ 1/P or V₁·P₁ = V₂·P₂

Where:

V₁ = Initial volume

V₂ = Final volume = V₁/2

P₁ = Initial pressure = 832 torr

P₂ = Final pressure  = Required

From V₁·P₁ = V₂·P₂ we have,

P₂ = V₁·P₁/V₂ = V₁·P₁/(V₁/2)

P₂  = 2·V₁·P₁/V₁ = 2·P₁ = 2× 832 torr = 1664 torr

6 0
3 years ago
Read 2 more answers
Why can't anything cheer me up rn?...<br><br><br> :'(
Kruka [31]

not sure.. you should eat poptarts

7 0
3 years ago
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When aqueous solutions of calcium bromide and potassium carbonate are combined, solid calcium carbonate and a solution of potass
ladessa [460]

K_2CO_3 + CaBr_2 → KBr + CaCO_3  is the net ionic equation for this reaction.

<h3>What is an ionic equation?</h3>

An ionic equation is a synthetic equation where electrolytes are composed as separated particles.

K_2CO_3 + CaBr_2 → KBr + CaCO_3 is the net ionic equation for this reaction.

A balanced ionic equation. shows the reacting ions. in a chemical reaction. These equations can be used to represent what happens in precipitation reactions.

Learn more about ionic equation here:

brainly.com/question/16225321

#SPJ1

5 0
1 year ago
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