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ivanzaharov [21]
3 years ago
7

Some pure calcium carbonate is made to react completely with 100cm3 Hydrochloric acid of unknown concentration. 120cm3 of carbon

dioxide was formed at Room temperature. calculate the number of moles of carbon dioxide formed at room temperature​
Chemistry
1 answer:
Kisachek [45]3 years ago
3 0

Answer:

Explanation:

as we know that 1dm3 =1000cm3

therefore x dm3 =120 cm3

1000X =1*120

X dm3 =120/1000=0.12

so 120 cm3 =0.12 dm3

now the number of moles of carbon dioxide at RTP is

moles =given volume(dm3)/standard volume at RTP

moles=0.12dm3/24

moles =5*10^-3

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Answer

odpowiedzi   d

Explanation

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Calculate the volume of a cube with the following measurements length= 5cm height =10 cm width=16 cm
Anna35 [415]

Answer:

800 cubic cm

Explanation:

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13. How many moles of zinc are in 25.00 g Zn?
topjm [15]
0.3824 moles of Zinc
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According to the following reaction, how many grams of hydrogen
Mila [183]

Answer:

7.03 g

Explanation:

Step 1: Write the balanced synthesis reaction

N₂(g) + 3 H₂(g) ⇒ 2 NH₃(g)

Step 2: Calculate the moles corresponding to 32.5 g of N₂

The molar mass of N₂ is 28.01 g/mol.

32.5 g × 1 mol/28.01 g = 1.16 mol

Step 3: Calculate the number of moles of H₂ needed to react with 1.16 moles of N₂

The molar ratio of N₂ to H₂ is 1:3. The moles of H₂ needed are 3/1 × 1.16 mol = 3.48 mol.

Step 4: Calculate the mass corresponding to 3.48 moles of H₂

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3.48 mol × 2.02 g/mol = 7.03 g

8 0
3 years ago
A loaded coal wagon with a total mass of 20 000 kg is pushed by a force of 300 000 N. What was the wagon’s acceleration?
AlexFokin [52]

Answer:

<h2>15 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{300000}{20000}  =  \frac{30}{2}  \\

We have the final answer as

<h3>15 m/s²</h3>

Hope this helps you

5 0
3 years ago
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