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4 years ago

Tell whether the statement is TRUE or FALSE. This symbol means every element is in both sets (A ⊆ B).

1 answer:

4 0

True
This statement is read as "A is a subset of B" which means that all elements contained in set A are a part of set B.

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the first three ionization energies of an element x are 590, 1145, and 4912 kj mol-1. what is the most likely formula of the com

joja [24]

Answer: The chemical formula is $XSO_3$

Explanation:

Ionization energy is defined as the amount of energy that is required to remove an electron from a chemical species.

The ionization energy equation for the given values follow:

$X(g)\rightarrow X^+(g)+e^-;E_I=590kJ/mol$

$X^+(g)\rightarrow X^{2+}(g)+e^-;E_I=1145kJ/mol$

$X^{2+}(g)\rightarrow X^{3+}(g)+e^-;E_I=4912kJ/mol$

From the values of ionization energy above, it can be seen that the ionization energy increases as every succeeding electron is removed.

Second ionization energy is a little higher than the first one but there is a huge amount of difference between the third and second ionization energy.

This implies that the ion formed during second ionization energy has a stable configuration and it requires a humongous amount of heat to release the third electron.

Hence, the ion formed will be $X^{2+}$

Sulfite ion is a polyatomic ion having a chemical formula of $SO_3^{2-}$

An ionic compound is formed between the two ions and the chemical compound formed between the two will have a formula of $XSO_3$

Hence, the chemical formula is $XSO_3$

5 0

3 years ago

The pressure exerted by each individual gas in a mixture of gases is called its pressure. This pressure is proportional to the f

snow_lady [41]

The pressure exerted by each individual gas in a mixture of gases is called its partial pressure this pressure is proportional to the mole fraction of the gas in the mixture

Pressure is defined as the force of all the gas particle of wall collisions divided by the area of the wall

The pressure exerted by an individual gas in a mixture is known as its partial pressure and assuming we have a mixture of ideal gases and we can use the ideal gas law to solve problems involving gases in a mixture and the ratio of the number of moles of one component of a solution or other mixture to the total number of moles representing all of the components

Know more about pressure

brainly.com/question/16118479

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3 0

1 year ago

P+O2 → P4O10

Assoli18 [71]

The answer is B, this is a synthesis reaction. A good way to identify a synthesis reaction is when there are multiple reactants, but only one product.

6 0

3 years ago

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Which of these molecules is nonpolar? a.CH3CI b.CO c.O2 d.PF3

valentina_108 [34]

Answer:

i think the answer is D

Explanation:

7 0

2 years ago

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How do you decide whether an observed property of matter is a physical or a chemical property?

Otrada [13]

By the object's composition and the acting agent to which factors the change of the substance or entity.
The effect of physical property of matter on the object or substance can be better identified when the object doesn't change in composition or in nature. Unlike chemical property which has changed in its composition and atomic structure that was caused by chemical change or reaction due to an agent. Physical property is identified thru physical reactions or changes that has never changed the object in an atomic level, like cutting paper into smaller sizes. The aforementioned example illustrates physical proerty but being cut into smaller buts without changing the object from paper to any other substance, thus, its structure remain and its still called paper regardless of size, mass and texture.

8 0

3 years ago

Read 2 more answers