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Results tagged with inorganic-chemistry
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user 7679
Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.
4
votes
1
answer
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Density of unknown solution?
A glass vessel weighs $\pu{20.2367 g}$ when empty and $\pu{20.3102 g}$ when filled to the etched mark with water at $\pu{4 °C}$. The same vessel was then dried and filled to the same mark with a so …
- 387
1
vote
1
answer
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How many Au atoms can be extracted from 0.250 L of seawater?
Gold is present in seawater to the extent of 0.15 mg/ton. Assume the density of seawater is 1.03 g/ml and determine how many gold atoms could be extracted from 0.250 L of seawater.
($\pu{1 ton}= …
- 387
2
votes
1
answer
393
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How to calculate the mass of hydrogen in a borane sample?
In a $\pu{45.9 g}$ sample of borane, a compound containing only boron and hydrogen, that's $85.63\%$ boron, what is the mass of hydrogen in this sample?
I was just going to take $\pu{45.9 g}$ and mu …
- 387
2
votes
1
answer
396
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Finding molarities of individual reagents given the chemical equation and total concentratio...
I am given a table that gives me the different total pressures at certain times. The decomposition of phosphine is the reaction:
$$\ce{4 PH3(g) <=> P4(g) + 6 H2(g)}$$
The time/pressure values are: …
- 387
5
votes
4
answers
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Why does K⁺ have 0 valence electrons?
If an electron is removed from an atom of $\ce{K}$, why does it then have 0 valence electrons as it states in my General Chemistry textbook? I would think that if this happened, it would have the same …
- 387