Answer:
Montreal protocol is an international treaty signed by many countries across the globe to regulate the manufacturing and usage of substances like chlorofluorocarbons and to take measures to protect the ozone layer.
Explanation:
Montreal protocol was signed on 16th September 1987 and it was enforced on January 1st 1989. It was singed all the 197 countries who acknowledged the importance of restoring and protecting the ozone layer. The treaty has various articles under it like -(Article 2) Calculation of control levels to control the usage of ozone depleting substances.
some of the recent measures to reduce CFCs are:-
1. UN environment programme had released a list of products for the public that deplete the ozone layer and another list that doesn't. so that the public can make wise purchasing decisions.
2. Safe disposal of appliances like ACs, refrigerator and coolers that contain CFCs
3. Different policies are made by the UN environmental protection agency and organisations like national resource defense council to regulate and reduce the production and usage of CFCs.
Answer:
4.09 × 10⁻² g
Solution:
As we know that,
1 mol of Fe₂O₃ is equal to = 159.69 g
So,
2.56 × 10⁻⁴ mol will be equal to = X g
Solving for X,
X = (159.69 g × 2.56 × 10⁻⁴ mol) ÷ 1 mol
X = 0.04088 g
Or,
X = 0.049 g
Or,
X = 4.09 × 10⁻² g
Average velocity (v) of an object is equal to its final velocity (v) plus initial velocity (u), divided by two. Where: ¯v = average velocity.
Hope this helps :)
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ROASTING IS THE SKELETON EQUATION