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Papessa [141]
2 years ago
9

Which is the main type of element found in the upper right part of the periodic table? O A. Metals B. Representative metals O C.

Nonmetals D. Metalloids​
Chemistry
1 answer:
tensa zangetsu [6.8K]2 years ago
7 0

Answer: The main type of elements found in the upper right part of the periodic table are the Nonmetals. The correct option is C.

Explanation:

The Periodic table of elements describes the properties of elements which varies in regular manner. Some of these chemical properties includes:

--> Ionisation energy

--> Atomic radii

--> Ionic radii

--> Electron affinity

--> electronegativity

--> metallic Character

--> Atomic volume

It organizes known elements based on these chemical properties. From the features of a Periodic table of elements, they occur in;

--> GROUPS(when similar elements are the arranged in numbered columns). These groups are the alkali metals, alkaline earth metals, halogens and noble gases.

--> PERIODS( when arranged in numbered rows).

Every element can either be classified as a metal, nonmetal or semi metal. NONMETALS are poor conductors of heat and electricity. They are clustered in the upper right-hand corner of the periodic table.

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A quantity of 0.225 g of a metal M (molar mass = 27.0 g/mol) liberated 0.303 L of molecular hydrogen (measured at 17°C and 741 m
Lana71 [14]

Answer:

Oxide of M is M_2O_3 and sulfate of M_2(SO_4)_3

Explanation:

0.303 L of molecular hydrogen gas measured at 17°C and 741 mmHg.

Let moles of hydrogen gas be n.

Temperature of the gas ,T= 17°C =290 K

Pressure of the gas ,P= 741 mmHg= 0.9633 atm

Volume occupied by gas , V = 0.303 L

Using an ideal gas equation:

PV=nRT

n=\frac{PV}{RT}=\frac{0.9633 atm\times 0.303 L}{0.0821 atm L/mol K\times 290 K}=0.01225 mol

Moles of hydrogen gas produced = 0.01225 mol

2M+2xHCl\rightarrow 2MCl_x+xH_2

Moles of metal =\frac{0.225 g}{27.0 g/mol}=8.3333 mol

So, 8.3333 mol of metal M gives 0.01225 mol of hydrogen gas.

\frac{8.3333}{0.01225 mol}=\frac{2}{x}

x = 2.9 ≈ 3

2M+6HCl\rightarrow 2MCl_3+3H_2

MCl_3\rightarrow M^{3+}+Cl^-

Formulas for the oxide and sulfate of M will be:

Oxide of M is M_2O_3 and sulfate of M_2(SO_4)_3.

3 0
3 years ago
The different molecules that make up the air in a room have on average the same kinetic energy. How does the speed of the differ
kap26 [50]
The formula for kinetic energy is KE=1/2(mv²).  Since both mass and velocity are multiplied by each other, particle with a larger mass needs to be moving slower than a particle with less mass if both have the same kinetic energy. You can think of it as 2KE/m=v² or 2KE/v²=m, If you increase the mass the velocity needs to decrease to keep the same KE value.

I hope this helps.  Let me know in the comments if anything is unclear.
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3 years ago
What would be the best way to measure the volume of a small ?​
WITCHER [35]
You can use a graduated cylinder.
6 0
2 years ago
The solubility of kcl in ethanol is 0.25 g / 100 ml at 25 oc. how does this compare to the solubility of kcl in water?
Furkat [3]
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3 years ago
Which is less likely to be a relatable source of information the webpage of a university or the webpage a scientist who is tryin
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Answer:

The web page of a university

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