1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leya [2.2K]
3 years ago
15

when 2.4 g zinc is added to hydrochloric acid, 450 ml of hydrogen gas form at a temperature of 32 C what is the pressure of the

gas
Chemistry
1 answer:
Dovator [93]3 years ago
6 0
First we need to find the number of moles of hydrogen gas formed
Zn + 2HCl ---> ZnCl₂ + H₂
stoichiometry of Zn to H₂ is 1:1
the number of Zn moles reacted - 2.4 g / 65.4 g/mol = 0.0367 mol
assuming Zn to be the limiting reactant 
number of Zn moles reacted = number of H₂ moles formed 
therefore number of H₂ moles formed = 0.0367 mol

we can use ideal gas law equation to find the pressure
PV = nRT
P - pressure
V - Volume - 450 x 10⁻⁶ m³
n - number of moles - 0.0367 mol
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature - 32 °C + 273 = 305 K
substituting these values in the equation 
P x 450 x 10⁻⁶ m³ = 0.0367 mol x 8.314 Jmol⁻¹K⁻¹ x 305 K
P = 206.8 kPa 
pressure is 206.8 kPa
You might be interested in
What type of resource are fossil fuels such as coal, oil, and natural gas?
alex41 [277]

They are non-renewable resources that formed when prehistoric plants and animals died and were gradually buried by layers of rock.

5 0
2 years ago
Is soda an acid or a base
Aneli [31]

Answer:

It's an Acid

Explanation:

cuz of the Co2 and it's naturally acidic nature

4 0
3 years ago
A series of logical steps that is followed in order to solve a problem is called the *
velikii [3]

Answer:

YUNG PANGATLO LETER D.

Explanation:

YUN ANG SAGUT :>

3 0
2 years ago
Read 2 more answers
The attraction of an atom for another atoms electrons is known as
GREYUIT [131]
It is called electron affinity. It increase as you go to the right of the periodic table.
8 0
3 years ago
Which of the following samples of gas would have a new volume of 3.00 liters if the pressure is decreased from 3.00 atm to 1.00
MArishka [77]

The group of choices associated with the questions is as follows:

A) 1.00 L He

B) 5.00 L CO2

C) 9.00 L H2S

D) more than one correct response

E) no correct response

Answer:

The correct answer is - A) 1.00 L He

Explanation:

According to the Boyles law, the pressure of the gas is inversely proportional to the volume of the gas at a constant temperature which means if the pressure increases then the volume will decrease and vice versa.

The equation of Boyle's law :

P1V1=P2V2

and V1 = P2V2/P1

Placing the value

V1 = 3*1/3

V1 = 1 L

thus, there is only one option has one liter that is A) 1.00 L He

4 0
2 years ago
Other questions:
  • 80.0 ML of fluorine gas is held in a flexible vessel at STP. If the vessel is transported to the surface of Venus where the pres
    5·2 answers
  • An atom of helium has a radius of 31. pm and the average orbital speed of the electrons in it is about 4.4x 10 m/s Calculate the
    11·1 answer
  • The osmotic pressure of a solution formed by dissolving 75.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25 °c is ________ atm
    5·1 answer
  • When entering coefficients to balance equations, recall that just writing the symbol implies "1." Therefore, if a coefficient of
    8·1 answer
  • Question 12 of 25
    12·1 answer
  • A particular solution of NaOH has hydronium concentration of 4x10-9 M. what is the solution’s pH?
    11·1 answer
  • As much sugar as will dissolve is added to hot water. The water is then
    5·1 answer
  • The box in the above picture is falling from the top of a building to the ground. Two major forces are acting on the box as it f
    15·2 answers
  • How many moles of solute are present in 150mL of 0.30 mol/L NaOH solution<br> ourse
    11·1 answer
  • Can someone please help me out !!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!