Answer:
Explanation:
The rate of reaction will not depend upon concentration of reactant . It will be always constant and equal to .0089M s⁻¹.
Initial moles of reactant = 400 x 10⁻³ mole in 5 L 
molarity = 400 x 10⁻³ /5 M 
= 80 x 10⁻³ M . 
= .08M 
no of moles reacted in 2 s  = .0089 x 2 
= .0178 M 
concentration left = .08 - .0178 M 
= .0622 M . 
No of moles left in 5 L 
= 5 x .0622 = .31 moles . 
 
        
             
        
        
        
The answer is D. Wind
Wind is considered physical weathering
 
        
             
        
        
        
Answer:
Strong acids are defined by their pKa. The acid must be stronger in aqueous solution than a hydronium ion, so its pKa must be lower than that of a hydronium ion. Therefore, strong acids have a pKa of <-174. Strong acids can be organic or inorganic.
Explanation:
Bond Strength
Strong acids have mostly ions in solution, therefore the bonds holding H and A together must be weak. Strong acids easily break apart into ions. Weak acids exist mostly as molecules with only a few ions in solution, therefore the bonds holding H and A together must be strong.
i think it will help you
 
        
             
        
        
        
it is an international project between several countries?