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
Papessa [141]
3 years ago
13

25 POINTS FOR SCIENCE! PLEASE HELP!! THANK YOU!!!!

Chemistry
1 answer:
astra-53 [7]3 years ago
7 0

1. 9.36 moles S

2. 0.213 moles Al

<h3>Further explanation</h3>

Given

Reaction

2Al+3S⇒Al₂S₃

Required

moles of S

moles of Al

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the compounds involved in the reaction (reactants or products)

  • 1. 3.12 moles Al₂S₃

From equation, mol ratio of Al₂S₃ : S = 1 : 3, so mol S :

= 3/1 x mol Al₂S₃

= 3/1 x 3.12

= 9.36 moles S

  • 2. 0.32 moles S

From equation, mol ratio of Al : S = 2 : 3, so mol Al :

= 2/3 x mol S

= 2/3 x 0.32

= 0.213 moles Al

You might be interested in
Brenda rode a skateboard 95 meters west. It took her 20 seconds. What was
Artemon [7]

Answer:

D. 4.75 m/s west

Explanation:

You can immediately get the answer once you know the formula for<em> velocity.</em>

  • The formula for velocity is: Velocity (V) = \frac{distance (d)}{time (t)}

The distance is 95 meters while the time is 20 seconds. All you have to do is to divide <u>95 meters by 20 seconds</u>.

Let's solve:

  • V = \frac{d}{t}
  • V = \frac{95 meters}{20 seconds}
  • V = 4.75 meters per second

Since Brenda is going west with her her skateboard, then you have to add <em>west </em>as her direction.

Brenda's velocity is 4.75 m/s west.

5 0
3 years ago
The balloon is removed from the freezer and returned to its initial conditions. It is then heated to a tempatuew of 2T at a pres
slavikrds [6]

Answer:

answer: It does not change

Explanation:

7 0
3 years ago
Watch the animation depicting Rutherford’s experiment and choose which of the following conclusions are correct.a. The atom cont
Lilit [14]

Answer:

a, b, c, d

Explanation:

Rutherford’ atomic model is based on the gold foil experiment. In this experiment, beam of alpha rays was bombarded on thin gold foil. He observed that:

Most of the alpha particles passed through thin foil without any deflection.

Few alpha particles deflected by an angle of 90o.

Based on observation, Rutherford concluded that majority of the space inside the atom is empty.

He explained defection of few alpha particles by assuming that most of the mass is concentrated at the nucleus and positively charged.  

Therefore, among given, the correct statements are:

The atom contains a positively charged nucleus.

Positive charge is condensed in one location within the atom.

The majority of the space inside the atom is empty space

The mass of an atom is concentrated at the nucleus

Therefore, the correct options are:

a, b, c, d

4 0
3 years ago
What decides the pitch of sound
dmitriy555 [2]
The vibration objects
3 0
3 years ago
A similarity ratio of scale factor is the ratio of the lengths of the corresponding of two similar polygons
Arturiano [62]

Answer:

go to hellfhshahahahahahahahahaha  aha

Explahhhhahah

7 0
3 years ago
Other questions:
  • I neeeddddd heeeellllllppppp I'll give you brainliest
    5·1 answer
  • If a gas is initially at a pressure of nine ATM and a volume at 21 L at a temperature of 253K and the pressure is raise to 15 AT
    14·1 answer
  • Hydrogen is unique among the elements because ________. 1. It is not really a member of any particular group. 2. Its electron is
    7·1 answer
  • 13. If a man has a mass of 83 kilograms on Earth, what will the force of gravity on his body be on the moon?
    13·2 answers
  • What type of chemical hazard results from incomplete combustion of petroleum-based chemicals and other organic substances?
    5·1 answer
  • Is it possible to make CD without plastic? why or why not?
    15·2 answers
  • 1.
    10·2 answers
  • Please help me
    15·1 answer
  • Which of the following statements is true?
    14·1 answer
  • In an atom the number of protons must be equal of
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!