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satela [25.4K]
3 years ago
10

Help me on number 4 and that last one says blood pressure

Chemistry
1 answer:
Lyrx [107]3 years ago
4 0
Map map map map map he keeps us on track when I leave home he go me back
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A group of atoms bonded together by different chemical reactions. It is the smallest fundamental unit of a chemical compound.

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3 years ago
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Which equation shows how to calculate how many grams (g) of KOH would be needed to fully react with 4 mol Mg(OH)2? The balanced
bazaltina [42]
Mole ratio:

MgCl₂ + 2 KOH = Mg(OH)₂ + 2 KCl

2 moles KOH ---------------- 1 mole Mg(OH)₂
moles KOH ------------------- 4 moles Mg(OH₂)

moles KOH = 4 x 2 / 1

= 8 moles of  KOH

molar mass KOH = 56 g/mol

mass of KOH = n x mm

mass of  KOH = 8 x 56

= 448 g of KOH 

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When a fuel burns, what determines whether co or co^2 will be produced?
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3 years ago
How does matter change phase?
crimeas [40]

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Hope it helps UvU

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