Which statement describes how a molecule of water is formed?
1 answer:
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Answer:
2.89 g/cm^3
Explanation:
Since density equals mass over volume (or also seen as ), simply divide 66.5 grams by 23.0 cm. This will output an answer of 2.89 g/cm^3.
Answer:
Explanation:
Given that:
Half life = 30 min
Where, k is rate constant
So,
The rate constant, k = 0.0231 min⁻¹
Using integrated rate law for first order kinetics as:
Where,
is the concentration at time t
is the initial concentration
Given that:
The rate constant, k = 0.0231 min⁻¹
Initial concentration = 7.50 mg
Final concentration = 0.25 mg
Time = ?
Applying in the above equation, we get that:-
