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brilliants [131]
3 years ago
7

What are the charges of the subatomic particles and where are they located in an atom?

Chemistry
1 answer:
Stella [2.4K]3 years ago
7 0
There is 3 subatomic particles that form an atom 1.) Protons 2.) Neutrons 3.) Electrons and they are located in the Nucleus :) 
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Please help me ont this<br><br><br><br><br><br><br><br><br><br>​
34kurt

Answer:

H

Explanation:

This will give it the perfect balance to roll straight and steady.

7 0
2 years ago
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The unit used to measure barometric or air pressure
Bumek [7]

Answer:

A barometer is an instrument used to measure air pressure and track weather systems. The most common unit of measurement used in barometers is the millibar (mb).

Explanation:

7 0
3 years ago
HELP ME PLEASE I NEED HELP SO BADLY
crimeas [40]

State the given:

Moles of Sulfur = 5 moles

Molar mass of Sulfur = 32.06g/mol

Look through the formulas:

Moles = Mass/Molar Mass

Rearrange the equation:

Mass = Moles x Molar mass

Plug in your given:

5 moles Sulfur   x   <u>32.06g</u>

                                 1 mol

<u>= 160.3g of Sulfur</u>

5 0
2 years ago
when aqueous solutions of sodium hydroxide and iron (II) chloride react, which substance will precipitate? 2NaOH + FeCl2 = 2NaCl
nataly862011 [7]

Answer:

Fe(OH)2

Explanation:

Iron hydroxides are chemical compounds that appear as precipitates after alkalizing solutions containing iron salts, both in their valence or degree of oxidation (III) and (II).

Hydroxide, in both cases, is a gelatinous colloid of difficult filtration that can be considered a hydrated oxide, iron (II) hydroxide is whitish in color and requires more alkalinization, above 7.

4 0
3 years ago
Gaseous ethane (CH,CH,) will react with gaseous oxygen (02) to produce gaseous carbon dioxide (CO2) and gaseous water (H,0). Sup
BigorU [14]

<u>Answer:</u> The mass of CO_2 produced is 12.32 g

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.  The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

  • <u>For ethane:</u>

Given mass of ethane = 4.21 g

Molar mass of ethane = 30 g/mol

Putting values in equation 1, we get:

\text{Moles of ethane}=\frac{4.21g}{30g/mol}=0.140mol

  • <u>For oxygen gas:</u>

Given mass of oxygen gas = 31.9 g

Molar mass of oxygen gas= 32 g/mol

Putting values in equation 1, we get:

\text{Moles of oxygen gas}=\frac{31.9g}{32g/mol}=0.997mol

The chemical equation for the combustion of ethane follows:

2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O

By stoichiometry of the reaction:

If 2 moles of ethane reacts with 7 moles of oxygen gas  

So, 0.140 moles of ethane will react with = \frac{7}{2}\times 0.140=0.49mol of oxygen gas

As the given amount of oxygen gas is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, ethane is considered a limiting reagent because it limits the formation of the product.

By the stoichiometry of the reaction:

If 2 moles of ethane produces 4 moles of CO_2

So, 0.140 moles of ethane will produce = \frac{4}{2}\times 0.140=0.28mol of CO_2

We know, molar mass of CO_2 = 44 g/mol

Putting values in above equation, we get:

\text{Mass of }CO_2=(0.28mol\times 44g/mol)=12.32g

Hence, the mass of CO_2 produced is 12.32 g

7 0
2 years ago
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