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Gnoma [55]
4 years ago
13

Manuel observes a chemical reaction between one atom of silicone and two atoms of oxygen which answer choice correctly list the

Chemical formula of the compound produced by the reaction? SI1+O2- Si1O2 SIO^2 SIO2
Chemistry
2 answers:
lawyer [7]4 years ago
7 0
The answer is SiO2
Since silicon has four valence electrons and each oxygen has 2, for every 1 silicon there must be 2 oxygen to fill in both element's outer shells satisfactorily. An alternative way to figure out the chemical formula is to simply swap the charges.
Silicon is a -4 and oxygen is a -2.
Oxygen's charge is brought down into subscript and set as the number of silicons in the chemical formula, making silicon Si2. Silicon's charge is brought down to make the number of oxygens in the chemical formula O4. The formula we have currently is Si2O4. Simplify it to get the empirical formula (divide by 2) and you get SiO2.
NemiM [27]4 years ago
3 0

Answer:

SiO2 is formed

Explanation:

According to the question, the reaction is carried out between one atom of silicon which is represented symbolically as Si and two atom of oxygen which is represented as O2(oxygen exist as a molecule).

Computing the reactant from the question will be as follow ;

Si + O2  → SiO2

The combination of a single silicon atom and diatomic oxygen will produce silicon(iv)oxide.(SiO2).

The valence electron of the Si atom is 4∧+ . silicon will act more like a positive ion because it is bonded to a strongly negative ion. Oxygen been negatively charge(2∧-) will be the receiver.

The chemical formula of the compound can be calculated from the valence electron.

       4∧+ : 2∧-

dividing both sides by 2 you will get

         2 : 1

The 2 will be sub-scripted on the Oxygen atom to form  SiO2.

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Which is the chemical name of the product formed when copper reacts with gas in air?
slega [8]
Copper oxide
As the gas in the air i'm assuming it's Oxygen.
3 0
3 years ago
The amount of heat absorbed by the alcohol was determined to be 1.17kJ. Given that the specific heat of the alcohol is 2.42J/gC
quester [9]

Answer:

                      ΔT  =  20.06 °C

Explanation:

The equation used for this problem is as follow,

                                    Q  =  m Cp ΔT   ----- (1)

Where;

           Q  =  Heat  =  1.17 kJ = 1170 J

           m  =  mass  =  24.1 g

           Cp  =  Specific Heat Capacity  =  2.42 J.g⁻¹.°C⁻¹

           ΔT  =  Change in Temperature  =  <u>??</u>

Solving eq. 1 for ΔT,

                                ΔT  =  Q / m Cp

Putting values,

                                ΔT  =  1170 J / 24.1 g × 2.42 J.g⁻¹.°C⁻¹

                                ΔT  =  20.06 °C

6 0
3 years ago
Is length an extensive or intensive physical property?
kati45 [8]

Answer:

The answer to your question is length is an extensive property

Explanation:

There are two physical properties: extensive and intensive properties.

An extensive property is a property that depends on the amount of matter.

An intensive property is a property that does not depend on the amount of matter.

7 0
3 years ago
What is the molality of the solution?!<br> :O
alisha [4.7K]

Answer:

-200

Explanation:

My sister told me to put dat but dont put dat as your answer

5 0
3 years ago
Help please If there are 10 moles of HCl gas occupying 15L at 350°C, what is the pressure? Be sure to show the setup and
lord [1]

Answer:

P = 34.1 L

Explanation:

Given data:

Number of moles = 10 mol

Volume occupy = 15 L

Temperature = 350°C

Pressure of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

350+273 = 623 K

by putting values,

P×15 L = 10 mol ×0.0821 atm.L/ mol.K ×623 K

P = 511.48atm.L/15L

P = 34.1 L

5 0
3 years ago
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