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Andre45 [30]
3 years ago
8

Is zinc an example of a element or compound?

Chemistry
2 answers:
Lerok [7]3 years ago
3 0

Answer:

Zinc is an <em>element</em>.

Explanation:

Compounds are composed of two or more elements

jeyben [28]3 years ago
3 0

Answer:

element

Explanation:

zinc is an element with atomic number 30

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What is the molality of 49 grams of NaCl in 469 grams of H2O (water)
mina [271]

Answer : The molality of sodium chloride is, 1.79 m

Explanation :

To calculate the molality of solution, we use the equation:

\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

Where,

m_{solute} = Given mass of solute (sodium chloride) = 49 g

M_{solute} = Molar mass of solute (sodium chloride) = 58.5 g/mol

W_{solvent} = Mass of solvent (water) = 469 g

Now put all the given values in above equation, we get:

\text{Molality of }NaCl=\frac{49g\times 1000}{58.5g/mol\times 469kg}\\\\\text{Molality of }NaCl=1.79mol/kg=1.79m

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