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padilas [110]
3 years ago
7

Define a catalyst and explain a catalyst's role in a chemicalreaction.

Chemistry
1 answer:
satela [25.4K]3 years ago
7 0

Answer:

Catalyst is referred to as the substance used in the reaction to speed up or to increase the efficiency of the reaction. the catalyst itself does not alter any change during the reaction. As catalyst itself is not the reactant or product thus it does not appear in a chemical reaction

Explanation:

Catalyst is referred to as the substance used in the reaction to speed up or to increase the efficiency of the reaction. the catalyst itself does not alter any change during the reaction. As catalyst itself is not the reactant or product thus it does not appear in a chemical reaction

In a chemical reaction, the catalyst is used to decrease the activation energy thus to provide or enhance the reaction mechanism to the reaction.

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8 0
2 years ago
Based on the balanced chemical equation for the preparation of malachite, what is the composition of the bubbles formed when sod
spin [16.1K]

Answer:

Carbon Dioxide = CO2

Explanation:

The synthesis of Malachite is seen in the chemical formula:

CuSO 4 . 5H2O(aq) + 2NaCO3(aq) --> CuCO 3 Cu(OH) 2 (s) + 2Na 2 SO 4 (aq) + CO 2 (g) + 9H 2 O(l)

The bubbles mentioned in the question hints that our interest is the compounds in their gseous phase  (g).

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3 0
3 years ago
Although coal is a complex mixture of substances, its elemental composition can be approximated by the formula <img src="https:/
Svetllana [295]

Answer:

The correct answer is option b.

Explanation:

2C_{135}H_{96}O_9NS+313O_2\rightarrow 270CO_2+2NO_2+2SO_2+96H_2O

Mass of coal burned = 1.00\times 10^6 metric ton = 1.00\times 10^6\times 10^3 kg=10^9 kg[/tex]

1 metric ton = 10^3kg

Molar mass of coal :

135\times 12g/mol+96\times 1g/mol+9\times 16 g/mol+1\times 14 g/mol+1\times 32 g/mol=1906 g/mol=1.906 kg/mol

1 g = 0.001 kg

Moles of coal ,n :\frac{10^9 kg}{1.906 kg/mol}=5.247\times 10^8 mol

If 2 moles of coal on combustion gives 270 moles of carbon dioxide than n moles of coal will give;

5.247\times 10^8 mol\times \frac{270}{2}=7.083\times 10^{10} mol of carbon dioxide.

Molar mass of carbon dioxide gas = 44 g/mol = 0.044 kg/mol

Mass of 7.083\times 10^{10} mol of carbon dioxide:

7.083\times 10^{10} mol\times 0.044 kg/mol=3.11\times 10^{11} kg

5 0
4 years ago
Compounds are different than elements because compounds are–
Andrei [34K]

Answer: Compound are different than elements because compounds are combinations of 2 or more elements.

6 0
4 years ago
When the temperature begins to drop in their own ecosystem.What do birds tend to do?
cestrela7 [59]

Answer: migrate south

Explanation:

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