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Finger [1]
2 years ago
8

In a chemical formula or a chemical equation, what is the small number after the element symbol? ​

Chemistry
1 answer:
trapecia [35]2 years ago
6 0

Answer:

It's called a subscript.

Explanation:

Subscripts tell you how many atoms of an element are in a compound.

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Jet Takeoff because it is the loudest according to the chart by the number of decibels.
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What is 1/4 cup of magnesium converted to grams
ahrayia [7]

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8 0
3 years ago
Cecil writes the equation for the reaction of hydrogen and oxygen below.
Wittaler [7]

Answer:

C) to show that atoms are conserved in chemical reactions

Explanation:

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For this case, we should add the apporpiate coefficients in order to be in compliance with this law:

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5 0
3 years ago
What are the molality and mole fraction of solute in a 22.3 percent by mass aqueous solution of formic acid (HCOOH)?
Vanyuwa [196]

Answer:

Mole fraction for solute = 0.1, or 10%

Molality = 6.24 mol/kg

Explanation:

22.3% by mass → In 100 g of solution, we have  22.3 g of HCOOH

Mass of solution = 100 g

Mass of solute = 22.3 g

Mass of solvent = 100 g - 22.3g = 77.7 g

Let's convert the mass to moles

22.3 g . 1mol/ 46 g = 0.485 moles

77.7 g. 1mol / 18 g = 4.32 moles

Total moles = 4.32 moles + 0.485 moles = 4.805 moles

Xm for solute = 0.485 / 4.805 = 0.100 → 10%

Molality → mol/ kg → we convert the mass of solvent to kg

77.7 g.  1 kg / 1000g = 0.0777 kg

0.485 mol / 0.0777 kg = 6.24 m

6 0
3 years ago
Read 2 more answers
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