Answer:
is this true/false? if so its true.
Explanation:
Answer is (4) - Pb.
According to the reactivity series of elements
- the elements which are above the hydrogen are more reactive than hydrogen.
- the elements which are below the hydrogen are less reactive than hydrogen.
Among the given choices, only Pb is placed above the hydrogen in the reactivity series and rest are below the hydrogen.
Hence, Pb is more active than hydrogen.
Answer:
D. 8.3 x 10-4
Explanation:
Hello!
In this case, since the rate law is written solving for the rate constant as:
Thus, we plug the rate and concentrations to obtain:
Therefore, the answer would be D. 8.3 x 10-4
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Answer:
1) The process mentioned here is " Weathering "
2) Chemical equation =
The acid H2CO3 and the CaCO3 combine to form HCO3 + HCO3 + Ca.
First blank- space
second blank- time
Hope this is extra helpful but also check your notes! have a wonderful day and stay safe is you are up north in the snow!