Calculate the mass in grams of each sample. 4.88x10^20 H2O2 molecules
1 answer:
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a)
A: Copper
B: CuO
C:
D: $\mathrm{CuCO_3}$
E: $\mathrm{CO_2}$
F: $\mathrm{Cu(NO_3)_2}$
b)
$\mathrm{CuO+ H_2SO_4}\rightarrow \mathrm{CuSO_4 + H_2O}$
c)
$\mathrm{CuCO_3+ 2HNO_3}\rightarrow \mathrm{Cu(NO_3)_2+ CO_2+ H_2O}$
Answer : The concentration after 17.0 minutes will be,
Explanation :
The expression for first order reaction is:
where,
= concentration at time 't' (final) = ?
= concentration at time '0' (initial) = 0.100 M
k = rate constant =
t = time = 17.0 min = 1020 s (1 min = 60 s)
Now put all the given values in the above expression, we get:
Thus, the concentration after 17.0 minutes will be,
The balanced chemical equation representing the process of photosynthesis is:
The reactants in the process of photosynthesis are and H
and the products of the reaction are glucose
and oxygen
. Oxygen is the nonpolar covalent gas which is released in the process of photosynthesis. The reactant
is a nonpolar covalent gas while the other reactant water
has polar covalent O-H bonds.
In the balanced chemical equation, the number of each type of element must be equal on both sides of the reaction.