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
posledela
3 years ago
8

Using stoichiometry, you predict that you should be able to use 314.0 g of Al to produce 1551 g of AlCi3. In your lab

Chemistry
1 answer:
Alex787 [66]3 years ago
6 0

Answer:

90.26%

Explanation:

From the question given above, the following data were obtained:

Theoretical yield of AlCl₃ = 1551 g

Actual yield of AlCl₃ = 1400 g

Percentage yield =?

The percentage yield of the reaction can be obtained as follow:

Percentage yield = Actual yield / Theoretical yield × 100

Percentage yield = 1400 / 1551 × 100

Percentage yield = 140000 / 1551

Percentage yield = 90.26%

Thus, the percentage yield of the reaction is 90.26%

You might be interested in
What is the Law of the Conservation of Mass
Fantom [35]

Answer: law of conservation of matter states that mass in an isolated system can neither be created nor destroyed by chemical reactions or physical transformation.

thus, the mass of the reactants in a reaction must be equal to the mass of the products

6 0
2 years ago
If a ball rolling down a hill is half way between the top and bottom, how much potential energy does the ball have compared to k
madreJ [45]

Answer:

The gravitational potential energy and kinetic energy of this ball should be equal (assuming that there is no energy loss due to friction.)

Explanation:

The ball loses gravitational potential energy as it rolls down the hill. At the same time, the speed of the ball increases, such that the ball gains kinetic energy.

If there is no friction on this ball (and that the ball did not deshape,) all the gravitational potential energy that this ball lost would be converted to kinetic energy.

If the gravitational field strength g is constant throughout, the gravitational potential energy of an object in that gravitational field would be proportional to its height.

If m denote the mass of this ball, the gravitational potential energy (\rm GPE) of this ball at height h would be {\rm GPE} = (m \cdot g) \cdot h, which is proportional to h\!.

The value of g near the surface of the earth is indeed approximately constant (typically g \approx 9.8\; \rm m \cdot s^{-2}.)

At halfway between the top and bottom of this hill, the height of this ball would be (1/2) of its initial value (the value when the ball was at the top of the hill.) Because the \rm GPE of this ball is proportional to its height, at halfway down the hill, the \rm GPE\! of this ball would also be (1/2)\! its initial value.

However, if there was no friction on this ball (and that the ball did not deshape,) that (1/2) of the initial \rm GPE\! of this ball was not lost. Rather, these (1/2)\! of the initial \rm GPE would have been converted to the kinetic energy (\rm KE) of this ball.

Hence, when the ball is halfway down the hill:

\displaystyle \text{GPE halfway down the hill} = \frac{1}{2}\, \text{Initial GPE}.

\begin{aligned}& \text{KE halfway down the hill}\\  &= \text{Initial GPE} - \text{GPE halfway down the hill}\\ &= \text{Initial GPE} - \frac{1}{2}\, \text{initial GPE}\\ &= \frac{1}{2}\, \text{Initial GPE}\end{aligned}.

Therefore:

\begin{aligned}& \text{GPE halfway down the hill} \\ &= \frac{1}{2}\, \text{Initial GPE} \\ &= \text{KE halfway down the hill}\end{aligned}.

In other words, under these assumptions, when this ball is halfway down the hill, the gravitational potential energy and the kinetic energy of this ball would be equal.

3 0
3 years ago
Which of the following measures of concentration changes with temperature?
Alinara [238K]
Sorry no se inglés
Jdjdjfkfjfjfkfkfkf
4 0
2 years ago
Which statement best represents a hypothesis?
mr_godi [17]

Answer:

B

Explanation: B

4 0
2 years ago
What is the name of the compound Hg2O7
dalvyx [7]

Answer:

I believe it is Mercury (II) oxide

hope this helps

6 0
3 years ago
Other questions:
  • Why does sulfur have more than 8 electrons in its valence?
    11·1 answer
  • the titration of a 20.0 mL sample of an H2SO4 solution of unknown concentration requires 22.87mL of a 0.200M NaOH solution to re
    11·1 answer
  • A piece of black onyx was cut into a rectangular solid measuring 5.10 cm by 5.10 cm by 2.50 mm . What is the volume in cubic cen
    11·1 answer
  • When there is less visible land along a coastline, it is because of what kind of coastline?
    11·2 answers
  • At 293 K, methanol has a vapor pressure of 97.7 Torr and ethanol has a vapor pressure of 44.6 Torr. What would be the vapor pres
    6·1 answer
  • A beaker with 135 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjug
    13·1 answer
  • The pKa of the side chain of glutamatic acid (an amino acid) is 4.1. glutamic acid ⇌ glutamate + H+ The pH in the lumen (inside)
    13·1 answer
  • An aqueous solution of copper(II) sulfate is electrolysed using inert electrodes.Predict the products of this electrolysis at
    12·1 answer
  • The electronic configuration of an element is given below.
    6·1 answer
  • If a space rover has a mass of 3900 kg on earth then what is its mass when it lands on mars?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!