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2 years ago

How many total atoms in 5 mg(NO3)2

Chemistry

2 answers:

sergeinik [125]2 years ago

6 0

Answer:

5 Mg (magnesium), 2 N (nitrogen), and 6 O (oxygen) -- total of 13 atoms

Cerrena [4.2K]2 years ago

3 0

There are 45 as 1 mg(NO3)2 = 9 atoms.

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How do the properties of a compound compare to the properties of the elements that make it up? A. the properties of the compound

Rufina [12.5K]

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds.

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3 years ago

What is the correct equilibrium constant expression for the following heterogeneous equilibrium? 4HCl (g) + O2 (g) ⇄ 2H2O (l) +

gizmo_the_mogwai [7]

Answer:

$Kc=[Cl2]2/[HCl]4[O2]$

Explanation:

Hello,

In this case, the law of mass action, allows us to study the mathematical expression regarding an equilibrium chemical reaction allowing us to see a relationship between the equilibrium constant and the concentration of both the products and reactants at equilibrium for either gaseous or aqueous substances only. Such relationship is assembled as the quotient between the concentration of products at equilibrium over the concentration of reactants at equilibrium equaling the equilibrium constant. Thus, for the given chemical reaction, such expression will have the concentration of chlorine at the numerator and both the concentrations of hydrogen chloride and oxygen at the denominator since water is liquid so it is not included in the shown below equation:

$Kc=\frac{[Cl]^2}{[HCl]^4[O_2]}$

Therefore the answer is: Kc=[Cl2]2/[HCl]4[O2].

Best regards.

5 0

3 years ago

Read 2 more answers

Someone please help asap

Naya [18.7K]

The answer would look something like this. (sorry for the ugliest diagram ever.)

4 0

3 years ago

A 12.5L container of neon had a pressure change

Elan Coil [88]

Answer: V= 44. 6 L

Explanation: use Boyle's Law

P1V1 = P2V2

Derive to find V2:

V2 = P1V1 / P2

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= 44.6 L

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3 years ago

Two objects of equal mass have a force of gravity of 6 N between them. Imagine the mass of one is cut in half and the other stay

Alenkasestr [34]

Answer:

F' = 3 N

Explanation:

Given that,

Two objects of equal mass have a force of gravity of 6 N between them.

If the mass of one is cut in half and the other stays the same such that,

m₁' = m₁ and m₂' = (m₂/2)

We need to find the new force. The gravitational force between two objects is given by :

$F=G\dfrac{m_1m_2}{r^2}$

We have, F = 6 N

New force,

$F'=G\dfrac{m_1'm_2'}{r^2}\\\\F'=\dfrac{Gm_1\times \dfrac{m_1}{2}}{r^2}\\\\=\dfrac{1}{2}\times \dfrac{Gm_1m_2}{r^2}\\\\F'=\dfrac{F}{2}\\\\F'=\dfrac{6}{2}\\\\F'=3\ N$

So, the new force becomes 3 N.

3 0

3 years ago