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STatiana [176]
4 years ago
13

CaCO3 + 2HCl --> CaCl2 + CO2 + H2O In the reaction above, what mass of carbon dioxide is produced when 10 moles of HCl reacts

with excess calcium carbonate?
Chemistry
1 answer:
puteri [66]4 years ago
4 0
According to the stoichiometry the CO2 formed is 1/2 the moles of H2O. So take the moles of CO2 as 5moles.

n=m/M

Where :

n = mole

m = mass

M = molar mass

Molar mass of CO2 = 44gmol^-1

Therefore mass = 5mol× 44gmol^-1= 220g
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3 0
3 years ago
How many atoms are there in each of the following substances?
juin [17]

To know the number of atoms, it will be necessary to use the formula of avogadro. We calculate the number of moles then we can calculate the number of avogadro.

The molar mass of:

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Bismuth = 209 g / mol

Strontium = 87 g / mol.

The number of avogadro (N) is 6.023 10 ^ 23

n = m (mass) / M  (molar mass)

number of atoms = n. N = m / M  . N

number of phosphorus atoms = 5.14/31 . 6.023 10^23 = 9.98 10 ^ 22 atoms

Number of atoms of mercury = 2.16/200 . 6.023 10^23 = 6.5 10 ^ 21 atoms

Number of bismuth atoms = 1.8/209 . 6.023 10^23 = 5.18 10 ^ 21 atoms

Number of strontium atoms = 8.8 x 10-2 /87 . 6.023 10^23 = 6.09 10 ^ 20 atoms

3 0
3 years ago
Iodine is an elemnt, but is Iodide an element or it is a compound?
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Answer: element

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5 0
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Read 2 more answers
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Answer:

See explanation

Explanation:

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NH3, an and NO2 are all strong field ligands hence they produce long wavelengths and lead to the formation of diamagnetic complexes.

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3 years ago
A sample of gas is held at constant volume. If the number of moles of this sample of gas is doubled and the pressure of this sam
FrozenT [24]

Answer:

<em>number of moles of gas increases the volume also increases.</em>

5 0
3 years ago
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