Answer:
V₂ = 0.98 L
Explanation:
Given data:
Initial volume = 750 mL =0.75 L
Initial pressure = 745 mmHg (745/760 =0.98 atm)
Initial temperature = 25 °C (25 +273 = 298 K)
Final temperature = -35°C (-35+273 = 238 K)
Final volume = ?
Final pressure = 0.60 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₁V₁/T₁ = P₂V₂/T₂
V₂ = P₁V₁T₂/T₁ P₂
V₂ = 0.98 atm × 0.75 L × 238 K / 298 K × 0.60 atm
V₂ = 174.93 atm .L. K / 178.8 K.atm
V₂ = 0.98 L
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Answer
alkali metals
Explanation:
metals of first and second group of periodic table have ability to donate electron and form positive ions
Answer:
the rate of a nuclear reaction is increased by the addition of a catalyst.
Explanation:-
Catalysts are substances that increase the speed of ordinary chemical reactions. Ordinary chemical reactions involve electrons. But a nuclear reaction involves only the nucleus. Hence catalysts cannot increase the rate of a nuclear reaction.
The chemical state of the atom depends on the electrons of the atom. Hence a nuclear reaction is unaffected by the chemical state of the atoms involved.
Isotopes have different mass number. So the nucleus is different. Hence nuclear reactions of the same element vary according to which isotope is involved.
In nuclear reactions energy release is given by E= mc 
where c is the speed of light. Hence energy changes in nuclear reactions are much greater than in ordinary chemical reactions.
If you mixed chlorine, argon, and sodium together, just by mixing there will be no changes or reaction that would happen since the energy in mixing the substances is not enough to let a reaction happen. However, if enough energy is added to the system sodium and chlorine might react and form sodium chloride.
