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svp [43]
3 years ago
10

How many moles of c9h8o4 are in a 0.300 g tablet of aspirin?

Chemistry
1 answer:
soldi70 [24.7K]3 years ago
5 0
<span>1.67 x 10^-3 moles Calculate the molar mass of C9H8O4 Carbon = 12.0107 Hydrogen = 1.00794 Oxygen = 15.999 C9H8O4 = 9 * 12.0107 + 8 * 1.00794 + 4 * 15.999 = 180.1558 Now divide the mass you have by the molar mass 0.300 g / 180.1558 g/mole = 1.665225 x 10^-3 Round to 3 significant figures 1.67 x 10^-3</span>
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Calculate the density of an object that has a mass of 43 g and a volume of 56.0 ml.
Yanka [14]
I will try to do it but not more than 70.4

5 0
3 years ago
Ammonium carbonate decomposes upon heating according to
BaLLatris [955]

The total volume of the gas produced, given the data from the question is 11.84 L

<h3>How to determine the mole of (NH₄)₂CO₃</h3>
  • Mass of (NH₄)₂CO₃ = 11.83 g
  • Molar mass of (NH₄)₂CO₃ = 96 g/mol
  • Mole of (NH₄)₂CO₃ =?

Mole = mass / molar mass

Mole of (NH₄)₂CO₃ = 11.83 / 96

Mole of (NH₄)₂CO₃ = 0.123 mole

<h3>How to determine the volume of NH₃</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 2 moles of NH₃

Therefore,

0.123 mole of (NH₄)₂CO₃ will decompose to produce = 0.123 × 2 = 0.246 mole of NH₃

Thus, we can determine the volume of NH₃ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.246 moles
  • Volume of NH₃ (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.246 × 0.08314 × 295) / 1.02

Volume of NH₃ = 5.92 L

<h3>How to determine the volume of CO₂</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of CO₂

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of CO₂

Thus, we can determine the volume of CO₂ produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of CO₂ (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

Volume of CO₂ = 2.96 L

<h3>How to determine the volume of H₂O</h3>

Balanced equation

(NH₄)₂CO₃ -> 2NH₃(g) + CO₂(g) + H₂O(g)

From the balanced equation above,

1 mole of (NH₄)₂CO₃ decomposed to produce 1 moles of H₂O

Therefore,

0.123 mole of (NH₄)₂CO₃ will also decompose to produce = 0.123 mole of H₂O

Thus, we can determine the volume of H₂O produced by using the ideal gas equation as follow:

  • Temperature (T) = 22 °C = 22 + 273 = 295 K
  • Pressure (P) = 1.02 bar
  • Gas constant (R) = 0.08314 bar.L/Kmol
  • Number of mole (n) = 0.123 moles
  • Volume of H₂O (V) =?

PV = nRT

Divide both side by P

V = nRT / P

V = (0.123 × 0.08314 × 295) / 1.02

Volume of H₂O = 2.96 L

<h3>How to determine the total volume of gas produced</h3>
  • Volume of NH₃ = 5.92 L
  • Volume of CO₂ = 2.96 L
  • Volume of H₂O = 2.96 L
  • Total volume of gas =?

Total volume = 5.92 + 2.96 + 2.96

Total volume of gas = 11.84 L

Learn more about ideal gas equation:

brainly.com/question/4147359

Learn more about stoichiometry:

brainly.com/question/14735801

#SPJ1

7 0
2 years ago
What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an intersta
kipiarov [429]

Answer:

=1.068 ×10⁻¹³N

Explanation:

Force of gravity =Gm₁m₁/d² where G is the universal gravitation constant =G = 6.673 x 10-11 N m²/kg², m₁ and m₂ is the mass of object 1 and 2 respectively and d is the distance between them. First we change the distance into SI units i.e meters 25 km= 25000 m

F= (6.673 x 10⁻¹¹ N m²/kg²×1000 kg×1000 kg)/ (25000 m)²

=1.068 ×10⁻¹³N

3 0
3 years ago
Calculate the mass of ZnCl2 produced by the reaction of 49.8 grams of H2. Zn + 2HCl ZnCl2 + H2
tester [92]

Answer:

3300.85 g

Explanation:

Given data:

Mass of ZnCl₂ produced = ?

Mass of H₂ produced = 49.8 g

Solution:

Chemical equation:

Zn + 2HCl     →    ZnCl₂ + H₂

Number of moles of  H₂:

Number of moles = mass/molar mass

Number  of moles = 49.8 g/ 2.056 g/mol

Number  of moles = 24.22 mol

Now we will compare the moles of H₂ with ZnCl₂ form balance chemical equation.

                         H₂              :              ZnCl₂

                          1                :                   1

                        24.22         :              24.22

Mass of ZnCl₂:

Mass = number of moles × molar mass

Mass =  24.22 × 136.286 g/mol

Mass = 3300.85 g

6 0
3 years ago
The force of a gas's outward push divided by the area of the walls of the container is the gas's
PilotLPTM [1.2K]
That is the definition of pressure.  The amount of force exerted over a certain area: N/m^2 (Newtons per square metre).
5 0
3 years ago
Read 2 more answers
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