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denis-greek [22]
3 years ago
6

(e) Which sample contains more atoms: 2.0 g of Fe2O3 or 2.0 g of CaSO4? Support your answer with calculations.

Chemistry
1 answer:
muminat3 years ago
4 0

CaSO4. It has 6 atoms while Fe2O3 has 5 atoms

Explanation:

Fe2O3 contains 2 atoms of Iron(Fe) and 3 atoms of Oxygen(O) = 2 + 3 = 5 atoms

CaSO4 contains 1 atom of Calcium(Ca), 1 atom of Sulphur(S) and 4 atoms of Oxygen(O) = 1 + 1 + 4 = 6 atoms

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kakasveta [241]

Answer:

It can be separated by physical methods.

2) It can appear different from different sources.

3) It cannot be described by a chemical symbol or formula.

Explanation:

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3 years ago
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When the pressure that a gas exerts on a sealed container changes from 893 mm hg to 778 mm hg, the temperature changes from 49.3
solong [7]

Answer: The final temperature of the gas is 7.58 °C.

Explanation: We are given initial and final pressure of the system and we need to find the final temperature of the system.

To calculate it, we use the equation given by Gay-Lussac.

His law states that pressure is directly related to the temperature of the gas.

P\propto T

Or,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

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P_2 = Final pressure = 778mmHg = 1.023atm

T_ = Final temperature = ?°C

Putting values in above equation, we get:

\frac{1.175atm}{322.45K}=\frac{1.023atm}{T_2}\\\\T_2=280.73K

Converting Final temperature from kelvin to degree Celsius.

T_2=280.73K=[280.73-273.15]^oC=7.58^oC

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5 0
2 years ago
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Barium chloride + sodium sulphate --> barium sulphate + sodium chloride
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These  are sometimes called double decomposition reactions.
8 0
3 years ago
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