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sergejj [24]
3 years ago
11

Please help me answer Question 1.

Chemistry
1 answer:
ratelena [41]3 years ago
7 0

Answer:

9 moles of oxygen are produced from 6 moles of potassium chlorate.

Explanation:

Given data:

Number of moles of KClO₃ = 6 mol

Number of moles of oxygen produced = ?

Solution:

Chemical equation:

2KClO₃       →    2KCl  + 3O₂

now we will compare the moles of KClO₃ and O₂.

                     KClO₃          :        O₂

                         2              :         3

                         6              :        3/2×6 = 9

Thus, 9 moles of oxygen are produced from 6 moles of potassium chlorate.

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From a 2.875 g sample containing only iron, sand, and salt, 0.660 g of iron and 1.161 g of sand were separated and recovered. Wh
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Answer:

36.66%

Explanation:

Step 1: Given data

  • Mass of iron: 0.660 g
  • Mass of sand: 1.161 g
  • Mass of the sample: 2.875 g
  • Mass of salt: ?

Step 2: Calculate the mass of salt

The mass of the sample is equal to the sum of the masses of the components.

m(sample) = m(iron) + m(sand) + m(salt)

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7 0
3 years ago
How many liters of C3H6O are present in a sample weighing 25.6 grams?
Romashka [77]

Answer:

V = 0.0327 L.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the liters of C3H6O by the definition of density. We can tell the density of this substance as that of acetone (0.784 g/mL) and therefore calculate the liters as shown below:

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Regards!

7 0
3 years ago
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