How do you determine the chemical reactivity for metals using the periodic table?

1 answer:

8 0

You can know the metal with low reactivity and the metal with high reactivity from the periodic table, as in metals the Chemical reactivity increases by going down a group, because of the farther down group we go the easier of lose and gain of electrons or the easier the electrons to be given or taken, this caused the chemical reactivity be higher.
- and the chemical reactivity decreases as we go across the period because they want to give away valence electrons, they need more energy to get rid of them.

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A solution of rubbing alcohol is 68.6 % (v/v) isopropanol in water. How many milliliters of isopropanol are in a 88.2 mL sample

KonstantinChe [14]

From the information given, the total volume of rubbing alcohol is 88.2 ml

68.6 % of this volume is isopropanol.

We will assume 88.2 ml represents 100% volume, so the volume of water will be 31.4 %

The volume of isopropanol is

68.6/100 x 88.2 → 0.686 × 88.2 = 60.505 ml

The volume of isopropanol is 60.5 ml.

Volume of water will be 88.20 - 60.5 = 27.7 ml

(27.7 / 88.2 × 100 = 31.4% )

Adding 60.5 ml of isopropanol to 27.7 ml of water to make up 88.2 ml will give 68.6 % v/v isopropanol to water solution.

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enot [183]

2
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Rus_ich [418]

Answer:

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Explanation:

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Calculate the mass of water produced by the metabolism of 49.0 g of glucose (C6H12O6). C6H12O6 + 6O2 → 6CO2 + 6H2O

aivan3 [116]

I will mark brainlist please help

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• the verb

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• the action in the sentence

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2 years ago

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KatRina [158]

The pH of 0.035 M aqueous aspirin is 2.48

Explanation:

We are given:

Concentration of aspirin = 0.035 M

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$HC_9H_7O_4\rightleftharpoons H^++C_9H_7O_4^-$