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Anvisha [2.4K]
2 years ago
10

Help please it’s confusing to me

Chemistry
1 answer:
Colt1911 [192]2 years ago
6 0

Answer:

B, H, E, G, C, D, A, F

Explanation:

The ones closest to the bottom are the oldest

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When the equation Al(OH)₃ + H₂SO₄ ---> Al₂(SO₄)₃ + H₂O is balanced, the sum of the balancing coefficients is
denis-greek [22]

Answer:

The answer to your question is the letter D. 12

Explanation:

Unbalanced chemical reaction

               Al(OH)₃  +  H₂SO₄  ⇒   Al₂(SO₄)₃  +  H₂O

           Reactants              Elements         Products

                  1                            Al                      2

                  1                            S                       3

                  5                            H                      2

                  7                            O                      13

Balanced chemical reaction

              2Al(OH)₃  +  3H₂SO₄  ⇒   Al₂(SO₄)₃  +  6H₂O

           Reactants              Elements         Products

                  2                            Al                      2

                  3                            S                       3

                 12                            H                     12

                 18                            O                     18

Sum up the coefficients

Result = 2 + 3 + 1 + 6

          = 12              

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3 years ago
is it true the branch of chemistry that specializes in carbon and carbon compounds is called ecological chemistry
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6 0
3 years ago
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PLEASE HELP, I ONLY NEED THE RIGHT ANSWER IN LITERS
grandymaker [24]
You can form 9.20 L of NH₃ gas at 93.0 °C and 37.3 kPa or 2.56 L at STP. The balanced chemical equation is N₂ + 3H₂ → 2NH₃ Since all substances are gases, we can use litres instead of moles in our calculations. You don't specify the pressure and temperature of the NH₃, so I will calculate its volume in two ways. 
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3 years ago
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Ivahew [28]
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8 0
2 years ago
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A sample of N2 gas is contaminated with a gas (A) of unknown molar mass. The partial pressure of each gas is known to be 200 tor
Tju [1.3M]

Answer: The molar mass of gas A is 1.75 g/mol

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of effusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So,

\frac{\text{Rate}_A}{\text{Rate}_{N_2}}=\sqrt{\frac{M_{N_2}}{M_{A}}}

We are given:

Molar mass of nitrogen gas = 28 g/mol

Molar mass of A gas = ? g/mol

Putting values in above equation, we get:

\frac{\text{Rate}_A}{\text{Rate}_{N_2}}=\sqrt{\frac{28}{M_{A}}}\\4=\sqrt{\frac{28}{M_{A}}}

M_{A}=1.75g/mol

Thus molar mass of gas A is 1.75 g/mol

7 0
3 years ago
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