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
hodyreva [135]
3 years ago
7

How many grams of calcium are required to free 8 grams of hydrogen gas from hydrochloride acid, HCl?

Chemistry
1 answer:
Gala2k [10]3 years ago
4 0

Answer:

The answer to your question is 160 g of Calcium

Explanation:

Data

mass of Calcium = ?

mass of Hydrogen = 8 g

reactant = HCl

Process

1.- Write the balanced chemical reaction

             Ca  + 2HCl   ⇒   CaCl₂  +  H₂

2.- Look for the atomic number of Calcium and hydrogen

Calcium = 40 g

Hydrogen = 1 x 2 = 2 g

3.- Use proportions to calculate the mass of calcium needed.

            40 g of Calcium ---------------- 2 g of hydrogen

               x                      ----------------- 8 g of hydrogen

                         x = (8 x 40) / 2

                         x = 320/2

                         x = 160 g of Calcium

You might be interested in
What is the 3-dimensional orientation of a sublevel known as?
RoseWind [281]

The 3-dimensional orientation of a sublevel is known as atomic orbital.

In quantum mechanics, Atomic orbitals are locations around an atom's nucleus where electrons are most likely to be at any particular time(specific orbits). These specific orbits exist in levels and can be broken down into sublevels.

Each sublevel has an orbital and it is oriented differently in 3-dimensional space.

The atomic orbital is a mathematical function that depicts how one or two electrons in an atom behave as seen in waves.

Learn more about atomic orbitals here:

brainly.com/question/1832385

3 0
2 years ago
If calcium has two valence electrons and sulfur has six, how many calcium atoms are needed to form an ionic bond with sulfur?
Kipish [7]
3 calcium atoms would be needed.
3 0
3 years ago
Read 2 more answers
The model below represents a nuclear reaction. Atom 1 is present before the reaction and Atom 2 and Atom 3 are produced after th
belka [17]
The right answer for the question that is being asked and shown above is that: "d. does not produce energy in nuclear power plants." The model most likely represents a reaction which d. does not produce energy in nuclear power plants<span>
</span>
7 0
3 years ago
Read 2 more answers
What does the pKa of the conjugate acid of a base have to be to remove a hydrogen from water (pKa = 15.7) so that the ratio of h
Inga [223]

Answer:

The pKa of the conjugate acid is 17.7

Explanation:

If hydrogen is removed from water, the equilibrium concentration of the conjugate acid according to the information given in the question becomes,

Kₐ = [OH⁻]/[H₂O]

K_a=\frac{100}{1} =100

Now, we determine the equivalent pKa

pKa = -log[ka]

pKa = -log[100]

pKa = -2

Removal of hydrogen from water is reversible as shown below;

H₂O  ⇄    OH⁻ + H⁺

15.7             -2

This reaction is reversible, and the difference in pKa = pKa[H₂O] - pKa[H⁺];

pKa  of the conjugate acid = 15.7 - (-2) = 17.7

The pKa of the conjugate acid is 17.7

5 0
3 years ago
Under the same conditions of solar radiation, compared with oceans the land will warm__________ !Please help!
Katarina [22]
Land will warm faster 
8 0
3 years ago
Other questions:
  • K for enolization of 2,4-cyclohexadienone is about 1013. Explain why the enol is so much more stable than the keto tautomer.
    15·1 answer
  • 6.285×10^3 mg = _____? _____ kg
    12·2 answers
  • Consider sodium oxide, Na2O. Choose the best explanation for the subscript, 2, from the list provided.
    13·2 answers
  • The main active components of bleach and many other household cleaners are
    5·2 answers
  • In P plants the gene for the color of the sea has two alleys in the punnets square show me love the dominant alley Y represents
    12·1 answer
  • 8. What must occur for a change to be a chemical reaction?
    6·1 answer
  • yesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesvyesyesyesy
    11·2 answers
  • 4. When a turbine spins, it generates electrical energy and that is where it gets its name from.
    7·1 answer
  • 4. What are three sources of environmental contaminants?
    11·1 answer
  • Use the drop-down menus to determine the changes of<br> state that are missing from the triangle.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!