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Nikolay [14]
3 years ago
12

Neon belongs to what family

Chemistry
1 answer:
andre [41]3 years ago
4 0
It belongs to the noble gas family
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Copper(l) sulfide can react with oxygen to produce copper metal by the reaction cu2s + o2 => 2cu + so2. if 5.00 g of cu2s is
valentina_108 [34]
To answer this problem, we write first the stoichiometric equation. Thus we have,

Cu2S + O2 => 2Cu + SO2

Next, we check if the equation is balanced or not.

(left)     (right)
2 Cu  = 2 Cu
1 S  =  1 S
2 O = 2 O

So the stoichiometric equation is balanced, let's proceed in solving the theoretical yield of Cu given 5 g of Cu2S.

First, we solve for Cu2S in moles,
5 g Cu2S x <u>1 mol Cu2S </u>  = 0.0314 mol Cu2S
                159.16 g Cu2s

Secondly, convert moles of Cu2S to moles Cu. Note for every mole of Cu2S we get 2 moles of Cu. Thus,

0.0314 mo Cu2S x <u>   2 mol Cu     </u> = 0.0628 mole Cu<u>
</u>                                1 mol Cu2S

Lastly, we convert mole Cu to g Cu via multiplying by Cu's MW.

0.0628 mole Cu x <u>63.546 g Cu  </u> = 3.99 g Cu or 4 g Cu<u>
</u>                                1 mole Cu

<em>ANSWER: 4 g Cu</em>



4 0
3 years ago
Read 2 more answers
If starch, glucose and NaCl are soaked in the dialysis tubing , will there be a difference between the beginning and after 15min
spin [16.1K]
<span>Yes. If you put solutions containing the same concentration table salt, glucose and starch in different bags and place the bags in water (i.e., 0M) solution, then the bag with salt will contain more water after 15 minutes than the bag with glucose, which will contain more than the bag with starch.</span>
6 0
3 years ago
What are some differences between Boiling &amp; Evaporation?
Angelina_Jolie [31]
Boiling happens much faster! Boiling also takes place at the bottom of the fluid whereas evaporation takes place at the top.


Hope this helps!

3 0
3 years ago
Read 2 more answers
In the reaction BaCO3 + 2HNO3 + Ba(NO3)2 + CO2 + H2O, what mass of Ba(NO3)2 can be formed by combining 55 g BaCO3 and 26 g HNO3
Nataliya [291]

From the stoichiometry of the reaction, the mass of barium nitrate produced is 54.9 g.

<h3>Stoichiometry</h3>

The term stoichiometry refers to mass - volume relationships. Stoichiometry can be used to calculate the amount, mass or volume of reactants and products from the balanced reaction equation.

The equation of the reaction is written as follows;

BaCO3 + 2HNO3 ------>  Ba(NO3)2 + CO2 + H2O

Number of moles of BaCO3  = 55 g/197.34 g/mol = 0.28 moles

Number of moles of HNO3 = 26 g/63.01 g/mol = 0.41 moles

From the reaction equation;

1 mole of BaCO3 reacts with 2 moles of HNO3

0.28 moles of BaCO3 reacts with 0.28 moles ×  2 moles/1 mole = 0.56 moles

There is not enough HNO3 hence it is the limiting reactant.

Number of moles of Ba(NO3)2 produced  is obtained from;

2 moles of HNO3  yields 1 mole of Ba(NO3)2

0.41 moles of HNO3  yields 0.41 moles × 1 mole/2 moles

= 0.21 moles of Ba(NO3)2

Mass of  Ba(NO3)2  = 0.21 moles  × 261.337 g/mol = 54.9 g

Learn more about stoichiometry: brainly.com/question/9743981

8 0
3 years ago
Match each volcano with the type of lava it most likely releases.
Aneli [31]

Answer:

1: Balsatic

2:Rhyolitic

3:Andesitic

Explanation:

I did an investigation of the volcanoes

7 0
2 years ago
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