a) Carbon and oxygen are chemically bonded in carbon dioxide.
The elements lose their individual identities in CO₂, and they always combine o the proportion C:O = 1:2.
You cannot separate the elements from each other by physical means.
Answer:
1. 26.30 g C.
2. 4.42 g H.
3. 35.04 g O.
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to calculate the required as follows:
1. Here, the only source of carbon is in CO2, and thus, we calculate the grams of carbon from the produced grams of this substance:
2. Here, the only source of hydrogen is in H2O, and thus, we calculate the grams of hydrogen from the produced grams of this substance:
3. Here, we subtract the mass of H and C from the mass of the sample, to obtain the mass of oxygen:
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Answer: adding
Explanation:
Because it takes thermal energy to power it
Answer is: there is 1,368·10²⁵ atoms of carbon.
N(C₃H₈) = 4,56·10²⁴.
From molecular formula: in one molecule of propane there is three atoms of carbon:
N(C) = 3 · 4,56·10²⁴.
N(C) = 1,368·10²⁵.
Answer:
Ca(OH)₂(aq) ⟶Ca²⁺(aq) +2OH⁻(aq)
Explanation:
An Arrhenius base is a substance that dissociates in water to form hydroxide ions.
Ca(OH)₂(aq) ⟶Ca²⁺(aq) +2OH⁻(aq)
Calcium hydroxide dissociates completely in water to form hydroxide ions, so Ca(OH)₂ is a strong Arrhenius base.