Explanation:
1) Reaction between nitrogen gas and oxygen gas.
According to reaction, hen 1 mole nitrogen gas reacts with 1 mole of oxygen gas it forms nitrogen oxide gas as a product.
2)reaction between nitrogen oxide and oxygen gas.
According to reaction , when 2 mole of nitrogen oxide reacts with 1 moles of oxygen gas to form 2 moles of nitrogen dioxide.
A reaction between to acids
Answer:
Rift valleys
Explanation:
An example is the Great Rift Valley in Africa. As plates move apart, they leaves a gap in the crust.
The answer is C
the letters at the botton are older
Polyester is a condensation polymer of dicarboxylic acid and diol.
Example : Polethylene terphthalate is polymer of ethylene glycol and tere phthallic acid.
When a strong acid like HCl or a strong base like NaOH comes in contact with polyester (like spilled on slacks) it causes hydrolysis of polyester and it get converted back to dicarboxylic and diol(the monomers).
the general reaction will be
RCOOR' ---> RCOOH + R'OH
Thus slacks will get teared.