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
Softa [21]
3 years ago
14

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2AlCl3 ( aq ) +

3 H 2 ( g ) What volume of H 2 ( g ) is produced when 8.60 g Al ( s ) reacts at STP
Chemistry
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer:

The answer to your question is  V = 19.9 L

Explanation:

Data

mass of Al = 8.60 g

volume of H₂ = ?

Balanced chemical reaction

                 2Al  +  6HCl  ⇒   2AlCl₃  +  3H₂

1.- Use proportions to calculate the mass of H₂ produced

Atomic mass of Al = 2 x 27 = 54 g

Atomic mass of H₂ = 6 x 1 = 6 g

                54 g of Al -------------------- 6 g of H₂

                  8 g  of Al -------------------  x

                  x = (8 x 6) / 54

                  x = 48 / 54

                  x = 0.89 g of H₂

2.- Calculate the volume of H₂

- Convert the H₂ to moles

                    1 g of H₂ --------------- 1 mol

                   0.89 g    ---------------- x

                    x = 0.89 moles

                    1 mol of H₂ -------------- 22.4 l

                   0.89 moles  ------------- x

                    x = (0.89 x 22.4) / 1

                   x = 19.9 L                        

You might be interested in
If evaporation occurs what will change 0.70 molar solution of CuSO4
faust18 [17]

Answer:

A. Molarity will increase .

Explanation:

Molarity = moles of solute per litre of solution

= moles of solute / volume of solution

If evaporation occurs , volume of solution decreases and moles of solute remains constant . Hence denominator decreases and numerator remains constant .

Hence the molarity increases .

3 0
3 years ago
Is helium a homogeneous or heterogeneous mixture or compound or element?
sattari [20]
Helium is a chemical ELEMENT of the family of noble gases. Its chemical symbol is 'He' which has an atomic number of 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Although it doesn't really react under normal conditions, it is the second most abundant element in the universe.

Elements are pure substances that cannot be broken down any further.
8 0
3 years ago
Which type of bond makes it possible for a macromolecule to interact with great specificity with just one out of the many thousa
Andrei [34K]

Answer:Non-covalent bonds

Explanation:

The Non-covalent bonds are bonds such as van der Waals forces of attraction, the Hydrogen bonds, hydrophobic bonds and so on. The Non-covalent bonds are very important types of bonding in large biological molecules.

Just like the question says, the Non-covalent bonds, ''makes it possible for a macromolecule to interact with great specificity with just one out of the many thousands of different molecules present inside a cell".

Ionic bonding is also a Non-covalent bonding. They(Non-covalent bonds) helps in the stability of large macromolecules.

7 0
3 years ago
.5 moles of sodium chloride is dissolved in 2 L of water. What is the molarity of the solution
suter [353]

Answer:

its ,5

Explanation:

i just did it :)

8 0
3 years ago
The product of alpha decay of the Nobelium isotope 259No is
Svet_ta [14]

Answer:

Nobelium is made by the bombardment of curium (Cm) with carbon nuclei. Its most stable isotope, 259No, has a half-life of 58 minutes and decays to Fermium (255Fm) through alpha decay or to Mendelevium (259Md) through electron capture.

Explanation:

7 0
3 years ago
Other questions:
  • PLEASE HELP QUICK What is the distinction between legal and illegal immigration?
    11·1 answer
  • Identify the spectator ions in the following molecular equation.
    13·1 answer
  • What is the name of the high energy compound that cells use directly to fuel other chemical reactions?
    7·1 answer
  • Which of the following is a sign a chemical reaction has occurred?
    5·2 answers
  • If you are needing at least 100. grams of HCI to be produced, how many
    10·1 answer
  • What is the average atomic mass of titanium on that planet
    8·1 answer
  • A gas sample has volume 3.00 dm3 at 101
    10·1 answer
  • NEED HELP FOR THIS ONE
    9·1 answer
  • Find the element, mass number, atomic number, and number of protons from the following information.
    5·1 answer
  • The poh of windex window cleaner is 2.40, calculate the hydrogen ion and hydroxide ion concentration.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!