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3 years ago

I just need help with the bird I don’t know where it’s from I never seen the movie here are the options for the name

Chemistry

2 answers:

AlekseyPX3 years ago

7 0

Kevin

Explanation:

Thats the answer is kevin she is from the movie "Up"

vitfil [10]3 years ago

3 0

I would say it’s Kevin

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How many moles of hydrogen are needed to produce 13.78 mol of ethane

Eddi Din [679]

82.68 moles of Hydrogen is needed to produce 13.79 moles of Ethane.

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3 years ago

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how would you determine without testing whether a container of a colourless liquid contains ethanol or ethanol and sucrose

kaheart [24]

Sucrose is not very soluble in ethanol; therefore, the particles of sucrose will be visible in the solution containing both sucrose and ethanol.

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3 years ago

Ammonium carbonate decomposes upon heating according to the following balanced equation:

Ugo [173]

Answer : The total volume of gas produced are, 11.5 L

Explanation :

First we have to calculate the moles of ammonium carbonate.

$\text{Moles of }(NH_4)_2CO_3=\frac{\text{Mass of }(NH_4)_2CO_3}{\text{Molar mass of }(NH_4)_2CO_3}$

Molar mass of $(NH_4)_2CO_3$ = 96.094 g/mol

$\text{Moles of }(NH_4)_2CO_3=\frac{11.9g}{96.094g/mol}$

$\text{Moles of }(NH_4)_2CO_3=0.124mol$

Now we have to calculate the moles of total gas.

The given balanced chemical reaction is:

$(NH_4)_2CO_3(s)\rightarrow 2NH_3(g)+CO_2(g)+H_2O(g)$

From the balanced chemical reaction we conclude that,

As, 1 mole of $(NH_4)_2CO_3$ react to give 4 mole of gas

So, 0.124 mole of $(NH_4)_2CO_3$ react to give $0.124\times 4=0.496$ mole of gas

Now we have to calculate the volume of gas.

Using ideal gas equation:

$PV=nRT$

where,

P = Pressure of gas = 1.05 atm

V = Volume of gas = ?

n = number of moles = 0.496 mole

R = Gas constant = $0.0821L.atm/mol.K$

T = Temperature of gas = $24.0^oC=273+24.0=297.0K$

Putting values in above equation, we get:

$1.05atm\times V=0.496mole\times (0.0821L.atm/mol.K)\times 297.0K$

$V=11.5L$

Thus, the total volume of gas produced are, 11.5 L

6 0

3 years ago

H2 + O2 -> 2H2O <br> balanced or unbalanced pls help

Sidana [21]

Answer:

Unbalanced

Explanation:

The reaction equation is given as:

H₂ + O₂ → 2H₂O

The given reaction flouts the law of conservation of mass and it is not balanced. To know a reaction that is balanced, the number of atoms on both sides of the expression must be the same;

Number of moles

Reactants Products

Hydrogen 2 4

Oxygen 2 2

We see that the hydrogen atoms are not balanced.

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3 years ago

How does chemical energy plays a role in chemical reactions

goldenfox [79]

Answer:

In a chemical reaction, energy is used for breaking the bonds of the reactants also energy is used in formation of new bonds. So, there are two ways to produce the energy in a reaction and they are either exothermic reaction (producing energy) or endothermic reaction (consuming energy from the surroundings).

Explanation:

hope this helps

i am so sorry if this is the wrong answer

plz mark brainliest

8 0

3 years ago