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defon
2 years ago
15

What kind of a system is a coffee held in a cup??​don't spam..

Chemistry
2 answers:
trasher [3.6K]2 years ago
7 0

<h2>Open system.</h2>

Explanation:

<h3>Hope it helps you!! </h3>
bagirrra123 [75]2 years ago
3 0

Answer:

open system

Coffee held in a cup is an open system because it can exchange matter water vapors and energy heat with the surroundings.

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2 years ago
How many grams of O are in 635 g of Li 2 O ?
KiRa [710]

Answer:

340g

Explanation:

Lithium oxide or Li2O is an inorganic compound made of two lithiums and one oxygen molecules. Lithium molecular mass is 6.94g/mol while oxygen molecular mass is 16g/mol. The molecular mass of Li2O will be:  

2* 6.94g/mol + 1*16g/mol= 29.88g/mol

Out of 1 mol lithium oxide (29.88g), there is 1 mol of oxygen(16g). Then, out of 635g lithium oxide the number of oxygen will be: 635g * (16g/29.88g)= 340g

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2 years ago
Name the part in red:<br> H2 + O2 -&gt; H2O
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Answer:subscript

Explanation:

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2 years ago
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Svet_ta [14]

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