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4 years ago

6

Combustion analysis of an unknown compound containing only carbon, hydrogen, and nitrogen produced 1.1385 g of co2 and 0.5652 g

of h2o. assume nitrogen was unreacted. if the molar mass is 160.2 g/mol, what is the molecular formula of the compound?

1 answer:

taurus [48]4 years ago

5 0

Co2 is correct hope this helps bud

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When the oxide of generic metal M is heated at 25.0 ∘ C , a negligible amount of M is produced. MO 2 ( s ) − ⇀ ↽ − M ( s ) + O 2

alex41 [277]

Answer:

1. C(s) + O₂(g) ⇄ CO₂(g)

2. $K=\frac{[CO_{2}]}{[O_{2}]}$

Explanation:

<em>When the oxide of generic metal M is heated at 25.0 °C, a negligible amount of M is produced. MO₂( s ) ⇄ M(s) + O₂(g) ΔG° = 290.2 kJ/mol.</em>

<em />

<em>1. When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical equation of this coupled process? Show that the reaction is in equilibrium. Include physical states and represent graphite as C(s).</em>

The chemical equation for the coupled reaction is:

C(s) + O₂(g) ⇄ CO₂(g)

<em>2. What is the thermodynamic equilibrium constant for the coupled reaction?</em>

The thermodynamic equilibrium constant (K) is the product of the concentration of the products raised to their stoichiometric coefficients divided by the product of the concentration of the reactants raised to their stoichiometric coefficients. Only gases and aqueous species are included.

$K=\frac{[CO_{2}]}{[O_{2}]}$

3 0

3 years ago

The model below shows an atom of an element. 10 light gray and 8 dark gray balls sit at the center with 2 concentric black rings

MA_775_DIABLO [31]

Answer:

The Atomic Number of the atom of an element whose model is given is "8" that is option no. 'C' in the question.

Explanation:

An Atom comprises of 3 basic structures that are Protons, Neutrons and Electrons. The central part is the Nucleus which contains protons and neutrons having positive charge and no charge respectively. The electrons are revolving around the nucleus in electronic shells having the negative charge.

<u><em>ATOMIC NUMBER: </em></u>

Atomic number is the number of protons present inside the nucleus of an atom and it determines the place of that particular atom in the <u>Periodic Table.</u>

In the model, given in the question, the nucleus contains 2 types of balls dark gray colored and light gray colored. The key at the bottom shows the dark gray colored ball as having a positive charge and thus it represents the atomic number for the given atom of element which is <u><em>EIGHT (8).</em></u>

So, the atomic number for the given atom is 8 which is element OXYGEN.

9 0

3 years ago

Read 2 more answers

Write a method that could be used to produce pure crystals of copper chloride from copper oxide and hydrochloric acid.

joja [24]

- Describe how you would make the salt from the reactants.

CuO + 2 HCl → CuCl₂ + H₂O

- Describe how you would purify the salt from the reaction mixture.

Filter the solution and let the product crystallize.

Explanation:

The reaction between copper oxide (CuO) and hydrochloric acid (HCl) will produce copper chloride (CuCl₂) and water:

CuO + 2 HCl → CuCl₂ + H₂O

-Describe how you would make the salt from the reactants

In a beaker which contain cooper oxide add the hydrochloric acid. To avoid working with concentrated hydrochloric acid, the acid may be diluted with water but make sure the add the stoechiometric amount (and a little bit of excess) in respect with the copper oxide.

-Describe how you would purify the salt from the reaction mixture.

Let the reaction proceed and then filter the solution to remove the unreacted cooper oxide.

Let the filtered solution, which contain copper chloride, water and unreacted hydrochloric acid, to stand undisturbed for several days. You may see the crystals growing from the solution. To speed up the process you may reduce the temperature.

Learn more about:

purifying compounds

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3 0

4 years ago

How many moles of p are in 2.4 moles of p2o10?

Vedmedyk [2.9K]

In order to solve this type of problem, we take a look at the subscript of each element involved in the compound. These values signifies the number of particles present of that element in that compound. The calculation is as follows:

2.4 moles P2O10 ( 2 moles P / 1 moles P2O10 ) = 4.8 moles P

8 0

3 years ago

4. The cloud of interstellar dust and gas that forms a star is known as

Ede4ka [16]

It's called a nebula or nebulae (plural). They are not only massive clouds of dust, hydrogen and helium gas, and plasma; they are also often “stellar nurseries” – i.e. the place where stars are born.

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3 years ago