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ololo11 [35]
3 years ago
14

How many kilograms is 9 grams

Chemistry
2 answers:
Lubov Fominskaja [6]3 years ago
7 0

9000 kilograms are in 9 grams

eduard3 years ago
3 0

The answer is 0.009

hope this helps

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Which element would be expected to have chemical and physical properties closest to those of rubidium?
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3 years ago
What mass of H2 is needed to react with 8.75 g of O2 according to the following equation: O2(g) + H2(g) → H2O(g)?
alina1380 [7]

Mass of H₂ needed to react with O₂ : 1.092 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Reaction

O₂(g) + 2H₂(g) → 2H₂O(g)

mass of O₂ : 8.75 g

mol O₂(MW=32 g/mol) :

\tt \dfrac{8.75}{32}=0.273

From the equation, mol ratio of O₂ : H₂ = 1 : 2, so mol H₂ :

\tt \dfrac{2}{1}\times 0.273=0.546

Mass H₂ (MW=2 g/mol) :

\tt 0.546\times 2=1.092~g

4 0
3 years ago
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A sample of 10K gold contains the following: 10.0g gold, 4.0g silver, 5.0g copper, and 5.0g nickel. What is the percent gold in
stellarik [79]

Answer:

oook

hi I am so sorry sorry sorry sorry I don't no answer

Explanation:

but you follow me and give me brainliest ok by by by by

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