Answer: In order to a solute to dissolve in a solvent, both the attraction forces that bind the units of solute together and the intermolecular forces that bind the molecules of solvent together must be weaker than the attraction forces between the particles of solute and the molecules of solvent.
Explanation:
The solute particles in are binded together in virtue of attractive forces (the nature and strength of these forces depends on the particular solute).
The same happens with the solvent molecules: they are binded by attractive forces (similarly, the nature and strength of these forces depend on the particular solvent).
To get dissolved (form solution) the particles of solute must be separated and mixed with the solvent particles in a process called solvatation.
The solute particles must surrounded by the solvent particles.
When the forces of attraction between the solute particles and the solvent are stronger than the forces of attraction that bind the solute particles, the solute particles move away from the solid solute and are integrated into the solution.
Answer: subatomic particles: negative charges (electrons) distributed in a mass of positive charge.
Explanation:
1) John Dalton's model depicted the matter as the combination of tiny, indivisible particles, called atoms.
According to this model, atoms can not be created, destroyed, or divided into smaller particles.
2) When it was discovered that all forms of matter contained negative particles, by multiple experiments with cathode ray tubes, those particles where named electrons.
3) J.J. Thompson could determine that the mass of those negative charges was much smaller that the mass of the smallest atom (hydrogen). Concluding that existed smaller particles than the atom. Hence, Dalton's model was wrong: atoms was divisible into smaller subatomic particles.
4) Then J.J Thompson proposed the plum pudding model, in which the electrons (plums) are embeded into a uniform positive mass (pudding).
Answer:
Rule, oversee, discipline
Explanation:
hope it helped!
The 2.0 kg of H2 after conversion to moles will react according to the balanced chemical equation N2(g) + 3H2(g) → 2NH3(g) to yield roughly 14836 liters of NH3 at standard temperature and pressure (STP). The calculation involves using the principles of stoichiometry and the molar volume of a gas at STP.
The chemistry topic that your question is discussing is known as stoichiometry, which involves the mathematical relationships between reactants and products in a chemical reaction. In this case, we're looking at the reaction of nitrogen gas (N2) with hydrogen gas (H2) to produce ammonia (NH3), which is described with the balanced chemical equation: N2(g) + 3H2(g) → 2NH3(g). This equation tells us that 3 moles of hydrogen react with 1 mole of nitrogen to produce 2 moles of ammonia.
Given that 1 mole of any gas occupies 22.4 liters at standard temperature and pressure (STP), and that we have 2.0 kg or 2000 g of H2, we first need to convert this mass into moles, using the molar mass of hydrogen (1.007 g/mol). So thus, 2000 g /2.014 g/mol gives us approximately 993.5 moles of hydrogen. As per the balanced equation, 3 moles of H2 yields 2 moles of NH3. Therefore, 993.5 moles of hydrogen would yield (993.5 x 2) / 3 = 662.33 moles of ammonia. Multiplying this by the molar volume at STP gives us 662.33 moles x 22.4 L/mol =14836 liters of ammonia.
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