Answer:
Density measures the amount of mass per unit of volume in a substance. Concentration describes the amount of a substance dissolved in another substance. Changing the concentration of a solution changes the density of the solution.
Answer:
Decomposition reaction
Explanation:
Decomposition reaction:
It is the reaction in which one substance is converted into the two or more products.
The decomposition reactions always involved one substance to decompose.
General chemical equation:
AB → A + B
The given chemical equation:
NH₄NO₃(s) → N₂O (g) + H₂O(g)
Ammonium nitrate is decomposed into nitrous oxide and water vapors.
Balanced chemical equation:
NH₄NO₃(s) → N₂O (g) + 2H₂O(g)
when it is rapidly heated it form N₂ and O₂.
2NH₄NO₃ → 2N₂ + O₂ + 4H₂O
By increasing the temperature decomposition is increased and in limited space due to pressure it may cause explosion.
The volume of 0. 250 mole sample of gas occupy if it had a pressure of 1. 70 atm and a temperature of 35 °C is 3.71 L.
Calculation,
According to ideal gas equation which is known as ideal gas law,
PV =n RT
- P is the pressure of the hydrogen gas = 1.7 atm
- Vis the volume of the hydrogen gas = ?
- n is the number of the hydrogen gas = 0.25 mole
- R is the universal gas constant = 0.082 atm L/mole K
- T is the temperature of the sample = 35°C = 35 + 273 = 308 K
By putting all the values of the given data like pressure temperature universal gas constant and number of moles in equation (i) we get ,
1.7 atm×V = 0.25 mole ×0.082 × 208 K
V = 0.25 mole ×0.082atm L /mole K × 308 K /1.7 atm
V = 3.71 L
So, volume of the sample of the hydrogen gas occupy is 3.71 L.
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Answer:
False the electrons are on the outside of the atoms
Explanation: