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Lilit [14]
3 years ago
6

an irregularly shaped solid is dropped into a graduated cylinder filled with 45.00 mL of water. the water level with the object

in the cylinder Rises to 82.5 ml if the object has a mass of 73.5g what is the density of the object
Chemistry
1 answer:
posledela3 years ago
8 0

The density of the object is 1.96 g/cm³.

Mass = 73.5 g

Volume = 82.5 mL – 45.00 mL = 37.5mL = 37.5 cm³

Density = mass/volume = 73.5 g/37.5 cm³ = 1.96 g/cm³

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2. Calculate how many moles of H2 would be produced if 0.250 mol of Fe reacts completely. (1 mark)
den301095 [7]

Hey there!:

Balanced Equation , for the reaction:

3 H₂SO₄(aq) + 2 Fe(s) → Fe₂(SO₄)₃(aq) + 3 H₂(g)

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moles H₂ = 0.250 × 3 / 2

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3 years ago
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Rus_ich [418]

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4.

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3 0
3 years ago
5. Calculate the mass of the following substances<br> a) 25 x 1023 molecules of N2
Anon25 [30]

Answer:

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Explanation:

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7 0
3 years ago
Read 2 more answers
Using the balanced equation N2+O2=2NO, how many grams of NO can be produced when 25.0 grams of N react?
Oxana [17]

Answer:

53.55gNO

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is possible for us to calculate the produced grams of nitrogen monoxide by starting with 25.0 g of nitrogen via their 1:2 mole ratio and the molar masses of 30.1 g/mol and 28.02 g/mol, respectively and by some stoichiometry:

=25.0gN_2*\frac{1molN_2}{28.02gN_2}*\frac{2molNO}{1molN_2}*\frac{30.01 gNO}{1molNO}\\\\=53.55gNO

Best regards!

8 0
3 years ago
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