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mixas84 [53]
3 years ago
13

Explain how the sizeof particles, catalyst,concerntration and temperature of the substance can affect the rate of reaction?

Chemistry
1 answer:
harkovskaia [24]3 years ago
5 0

Answer:

Look at explanation

Explanation:

Size of particles increases, rate of reaction decreases, and vise versa

Catalyst causes the rate of reaction to increase

Concentration increases, rate of reaction increases, and vise versa

Temperature increases, rate of reaction increases, and vise versa

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A bar of gold is 5.0mm thick, 10.0cm long and 2.0cm wide. It has a mass of exactly 193.0g. What is the desity of gold?
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<h3>Answer:</h3>

19.3 g/cm³

<h3>Explanation:</h3>

Density of a substance refers to the mass of the substance per unit volume.

Therefore, Density = Mass ÷ Volume

In this case, we are given;

Mass of the gold bar = 193.0 g

Dimensions of the Gold bar = 5.00 mm by 10.0 cm by 2.0 cm

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Step 2: Density of the gold bar

Density = Mass ÷ volume

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Thus, the density of the gold bar is 19.3 g/cm³

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Balance the chemical equation.Au plus HC l plus HNO 3 right arrow AuC l Subscript 3 Baseline plus NO plus Upper H 2 Upper OAu+HC
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Au+ 3HCl + HNO_3 \to AuCl_3+NO+2H_2O

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Chemical Equations are representations of chemical reactions in terms of the symbols and formulae of the elements and compounds involved. A chemical equation usually have the reactant at the left hand side while the product is on the right hand side.

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in the given question; we are given a word problem of chemical symbol to  compute and also to balance the chemical equation.

From below; the chemical equation can be written as:

Au+ HCl + HNO_3 \to AuCl_3+NO+2H_2O

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Au+ 3HCl + HNO_3 \to AuCl_3+NO+2H_2O

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