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nexus9112 [7]
3 years ago
12

Name one trend observable in a periodic table

Chemistry
2 answers:
trasher [3.6K]3 years ago
8 0
Electronegativity
Ionization energy
Electron affinity
Atomic radius
Melting point
wolverine [178]3 years ago
8 0

Answer:

Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character.

Explanation:

These six are the major trends.

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Natalka [10]

Answer:

9g/cm^3 is the density

Explanation:

P = m/V

P = 18/2 = 9g/cm^3

(This is more of a physics question than chem btw)

6 0
2 years ago
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If 40.0 grams of zinc react with excess hydrochloric acid, how many grams of zinc chloride will be produced?
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Answer:

Attached is the solution to the question

Explanation:

6 0
3 years ago
CaCO3(s)⇄CaO(s)+CO2(g) When heated strongly, solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxid
rusak2 [61]

Answer:

1.04 mol

Explanation:

CO₂ is produced in a closed 100 L vessel according to the following equation.

CaCO₃(s) ⇄ CaO(s) + CO₂(g)

At equilibrium, the pressure of carbon dioxide remains constant at 1.00 atm.

First, we need to conver the temperature to the absolute scale (Kelvin scale) using the following expression.

K = °C + 273.15

K = 898°C + 273.15

K = 1171 K

Now, we can find the moles of carbon dioxide using the ideal gas equation.

P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T} = \frac{1.00atm \times 100L}{\frac{0.0821atm.L}{mol.K}  \times 1171K} = 1.04 mol

7 0
3 years ago
How many moles of hypomanganous acid, H3MnO4, are contained in 22.912 g?
harkovskaia [24]

Answer:

0.188mol

Explanation:

Using the formula as follows:

mole = mass/molar mass

Molar mass of hypomanganous acid, H3MnO4 = 1(3) + 55 + 16(4)

= 3 + 55 + 64

= 122g/mol

Mass of H3MnO4 is given as 22.912 g

Hence;

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5 0
3 years ago
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