The answer is B) Zinc will replace lead (...)
The following are the ways in which farmers depend on communication technology and modern communication systems:
Farmers rely on mediums like radio, television, and the internet in order to get information pertaining to weather and other factors that affect the crop directly and indirectly. Based on the weather forecast reports presented on radio and television, the farmers plan their activities in order to minimize the possibilities of loss if there are predictions of less or no rainfall in the coming days.
Moreover, the farmers make use of the communication technology to contact the buyers or vendors from not only the domestic markets, but also those from the international market.
Modern communication systems help the farmers by bringing them across the information pertaining to new and improved varieties of seeds, fertilizers, agricultural equipment, etc., and make them aware of convenient yet efficient means of carrying out agricultural activities.
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, there are ways to save the forest of third world countries - this includes
1) Creating of forest reserves: Wide areas of land that are still forested can still be preserved and converted to forest reserves which can prevent these areas from being deforested as a result of human activities or industrialization.
2) Government policies: Government can put policies in place to prevent people from embarking on deforestation of certain lands. This is because some parts of the third world countries still rely on wood for cooking and other sources of daily activities.
3) Replanting of deforested areas: Replanting of trees can also help third world countries in saving the forest.
Answer:
- Increasing the temperature: shifts the equilibrium to the products side (towards the right direction).
- Decreasing the temperature: shifts the equilibrium to the reactants (towards the left direction).
Explanation:
Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.
For the mentioned endothermic reaction can be represented as:
Co(H₂O)₆²⁺ + 4Cl⁻ + heat ⇌ CoCl₄²⁻ + 6H₂O.
In endothermic reactions: heat is a reactant for the forward reaction and a product for the reverse reaction.
So the effect of temperature on the equilibrium position is:
- Increasing the temperature:
Increasing the temperature leads to increasing the concentration of the reactants, so the equilibrium will be shifted to the products side (towards the right direction) to suppress the effect of increasing T.
- Decreasing the temperature:
Decreasing the temperature leads to decreasing the concentration of the reactants, so the equilibrium will be shifted to the reactants (towards the left direction) to suppress the effect of decreasing T.