The pressure in atm is calculated as follows
1 KPa pressure = 0.00986923 atm
what about 739 KPa is equal to how many atm\
that is 739KPa x 0.00986923atm/ 1KPa= 7.2933 atm
Answer:
The answer to your question is letter B
Explanation:
Activated complex is an intermediate process between the reactants and the products which has a higher energy than both (reactants and products).
In the graph we can see that the higher point is letter B, that is the one of the activated complex. The energy that must be supply to the systed to proceed is called activated energy.
Answer:
2Mg(s) +O₂(g) → 2MgO(s)
Explanation:
Mg(s) +O₂(g) → MgO(s)
When a chemical equation is balanced, the number of atoms of each element is equal on both sides of the arrow. We usually balance O and H last.
In this case, the number of Mg atoms is equal on both sides. Thus, let's move on to balance the O atoms. On the left side, there are 2 O atoms, while there is only 1 O atom on the left side. Thus, write a '2' in front of MgO.
Mg(s) +O₂(g) → 2MgO(s)
Now, the number of Mg atoms is not equal. Write a '2' in front of Mg to balance it.
2Mg(s) +O₂(g) → 2MgO(s)
The equation is now balanced with 2 Mg atoms and 2 O atoms on each side.
Taking into account the reaction stoichiometry, 1.25 grams of H₂ (option A) are formed if you start with 2.5 moles of Magnesium and an excess of Hydrochloric Acid.
<h3>Reaction stoichiometry</h3>
In first place, the balanced reaction is:
Mg + 2 HCl → MgCl₂ + H₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
- Mg: 1 mole
- HCl: 2 moles
- MgCl₂: 1 mole
- H₂: 1 mole
<h3>Mass of hydrogen formed</h3>
The following rule of three can be applied: if by reaction stoichiometry 2 moles of Mg form 1 mole of H₂, 2.5 moles of Mg form how many moles of H₂?
<u><em>moles of H₂= 1.25 moles</em></u>
Finally, 1.25 grams of H₂ (option A) are formed if you start with 2.5 moles of Magnesium and an excess of Hydrochloric Acid.
Learn more about the reaction stoichiometry:
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True Gibberellin causes seeds to germinate more quickly.This is because gibberellin are involved in natural process of breaking seed dormancy. The break of seed dormancy help the seed to germinate quickly as seed do not last in the soil for long. In addition gibberellin induces seed germination.