Is freshly squeezed orange juice a single element?

2 NH3 + 3 CuO --> 3 Cu + N2 + 3 H2O

Gnom [1K]

<u>Answer:</u> 0.5 moles of $N_2$ are produced in the reaction

<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)

Given mass of $CuO$ = 113.6 g

Molar mass of $CuO$ = 79.5 g/mol

Plugging values in equation 1:

$\text{Moles of CuO}=\frac{113.6g}{79.5g/mol}=1.43 mol$

For the given chemical reaction:

$2NH_3+3CuO\rightarrow 3Cu+N_2+3H_2O$

By the stoichiometry of the reaction:

If 3 moles of $CuO$ produces 1 mole of $N_2$

So, 1.43 moles of $CuO$ will produce = $\frac{1}{3}\times 1.43=0.476=0.5mol$ of $N_2$

Hence, 0.5 moles of $N_2$ are produced in the reaction

5 0

3 years ago

Ethical Behavior Worksheet Situation 1. You are taking a very difficult chemistry course, which you must pass to maintain your s

krok68 [10]

Answer:

I would not accept it.

Explanation:

Although it is tempting to accept the janitor's offer and save the scholarship, which is not easy to get, I would not accept his offer, as I do not believe in victories based on dishonesty and would be heavy on conscience if I did the opposite. Obviously, I would not like to lose my scholarship and for that reason, I would look for other ways that would be honest and help me improve my grade. If I could not improve and lose the scholarship, I would be extremely sad, but I would be at peace with my conscience.

4 0

3 years ago

What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate

andreyandreev [35.5K]

Answer:

NaCl: 184g

MgCl₂: 6.60g

Na₂SO₄: 9.26g

CaCl₂: 1.28g

KCl: 0.70g

NaHCO₃: 0.13g

Explanation:

To convert these concentrations to masses we need to convert molarity to moles and moles to grams using molar mass of each salt:

[CaCl₂] = [Ca²⁺] = 0.0115M

[HCO₃⁻] = [NaHCO₃] = 0.0015M

[SO₄²⁻] = [Na₂SO₄] = 0.0652M

[Mg²⁺] = [MgCl₂] = 0.0693M

[K⁺] = [KCl] = 0.0094M

And using the concentration of Cl⁻:

[Cl⁻] = [NaCl] + 2[MgCl₂] + 2[CaCl₂] + [KCl]

[3.32] = [NaCl] + 2[0.0693] + 2[0.0115] + [0.0094]

[NaCl] = 3.149M

The masses you need are:

<em>NaCl (Molar mass: 58.44g/mol):</em>

3.149mol/L * 1L * (58.44g/mol) =

<em>MgCl₂ (Molar mass: 95.211g/mol):</em>

0.0693mol/L * 1L * (95.211g/mol) =

Na₂SO₄<em> (Molar mass: 142.04g/mol):</em>

0.0652mol/L * 1L * (142.04g/mol) =

CaCl₂<em> (Molar mass: 110.98g/mol):</em>

0.0115mol/L * 1L * (110.98g/mol) =

KCl<em> (Molar mass: 74.55g/mol):</em>

0.0094mol/L * 1L * (74.55g/mol) =

<em>NaHCO₃ (Molar mass: 84g/mol):</em>

0.0015mol/L * 1L * (84g/mol) =

<h3>0.13g NaHCO₃</h3>

7 0

3 years ago

Help! This is due tomorrow and my teacher didn't explain this topic very well so I'm totally lost!

nydimaria [60]

Answer:

sorry I'm a dumb small brain

Explanation:

my genes

6 0

3 years ago

An unknown compound has the following chemical formula: where stands for a whole number. Measurements also show that a certain s

anygoal [31]

The question is incomplete, the complete question is;

An unknown compound has the following chemical formula:

N2Ox

where x stands for a whole number.

Measurements also show that a certain sample of the unknown compound contains 3.7 mol of oxygen and 2.45 mol of nitrogen.

Write the complete chemical formula for the unknown compound.

Answer:

The complete formula of the compound is N2O3.

Explanation:

Given;

Number of moles of N = 2.45 moles

Number of moles of O = 3.7 moles

Chemical formula of unknown compound = N2Ox

From the ratio of the number of moles of N to O;

2/x = 2.45/3.7

2 * 3.7 = x * 2.45

x = 2 * 3.7/ 2.45

x =3

Hence the complete formula of the compound is N2O3.

8 0

3 years ago