Answer:
Explanation:
Originally Rutherford thought that the particles would fly straight through the foil. However, he found that the particles path would be shifted or deflected when passing through the foil. This is due to the fact that like charges repel each other.
Yes, it does matter... you pour Acid into water and not water in Acid... because when you pour water in acid it may splash out
Answer:
When writing equation the mass on left side of equation must be equal to the mass on right side. True
Explanation:
The chemical reactions always follow the law of conservation of mass.
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass because total mass is equal on both side of equation.
They give information about wheatger patterns which th use to pedict the wheather
Answer:
ΔH of solution = ΔH₁ + ΔH₂ + ΔH₃
Explanation:
- Assume that the solution is formed via dissolving solute A in the molecules of Solvent B.
<em>The formation of the solution goes through 3 steps:</em>
1- The dissociation of the solute A particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₁ > 0 beause this is an endothermic process.
2- The dissociation of the solvent B particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₂ > 0 because this is an endothermic process.
3- The particles of the solvent and solute are holding together. It has ΔH₃ < 0 because this is an exothermic process.
- The enthalpy of the solution (ΔH of solution) will be equal to the sum of the enthalpy change of the three steps.
- ΔH of solution = ΔH₁ + ΔH₂ + ΔH₃.