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gregori [183]
3 years ago
11

When calcium (Ca) is mixed with hydrochloric acid (HCl), a single replacement reaction occurs. What will be the product or produ

cts of the reaction? a.CaCl + H2
b.CaCl2
c.Ca + HCl
d.CaCl2 + H2
Chemistry
2 answers:
antiseptic1488 [7]3 years ago
8 0
The answer is C.) Ca + HCl
Sever21 [200]3 years ago
8 0

Answer:

The correct answer is option d: CaCl2 + H2

Explanation:

Hello!

Let's solve this!

When the Ca + HCl is joined there is a replacement reaction in which Ca takes the place of H and to balance loads, we need two atoms of Cl.

The resulting reaction is CaCl2 + H2

The complete reaction is

Ca + 2HCl ---> CaCl2 + H2

We conclude that the correct answer is option d: CaCl2 + H2

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The carbon cycle involves an exchange of carbon between ___
Solnce55 [7]
<h2>Answer:</h2>

D) The geosphere, hydrosphere, and atmosphere

<h2>Explanation:</h2>

During the carbon cycle, various processes move carbon from the geosphere to the atmosphere such as volcanic eruptions release carbon dioxide from molten rock beneath the earth's surface to the atmosphere. Carbon can leave the soil through soil respiration which releases CO2, or by erosion  which can carry it into rivers or the ocean, where it then enters the hydrosphere. Carbon is found in the hydrosphere dissolved in ocean water and lakes and hence the cycle continues.

3 0
3 years ago
Read 2 more answers
List 5 chemical properties of water?? ​
Marat540 [252]

Answer:

  1. In the presence of a strong electron donor (strong reducing agent), water serves as an oxidizing agent. In the presence of a strong electron acceptor (strong oxidizing agent), water serves as a reducing agent.
  2. On-water reactions are a group of organic reactions that take place as an emulsion in water and have an unusual reaction rate acceleration compared with (i) the same reaction in an organic solvent, or (ii) the corresponding dry media reaction.
  3. Amphoteric nature : Water can act as both acid and base, which means that it is amphoteric in nature.
  4. Hydrolysis reaction : Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.
  5. Redox reactions : Electropositive elements reduce water to hydrogen molecule. Thus, water is a great source of hydrogen.
5 0
3 years ago
The movement of molecules across a membrane from an area of high concentration to one of low concentration is best described as:
mestny [16]

Answer:

Difussion

Explanation:

Diffusion is the result of a totally random phenomenon in which the molecules of a fluid come and go between two vessels that can be connected by a pipe. These molecules travel in a single direction, where the solute is more concentrated to where it is more diluted.

This movement of particles will be modified according to the length or area of ​​the pipe and the concentration of solute. The greater the difference in solute concentration along the tube, the greater the diffusion

6 0
3 years ago
Hydrogen bonds are:
bekas [8.4K]

Answer:

The answer to your question is: letter C

Explanation:

a. the sharing of electrons between a hydrogen atom and another atom.  This description is not for hydrogen bonding, in hydrogen bonding atoms do not share electrons, to form this bond.

b. the electrostatic interaction between an atom that has lost an electron and an atom that has gained an electron.  This definition is describing an ionic bonding, not a hydrogen bonding.

c. the interaction between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom. This is the right definition of hydrogen bonding, because is mentioning the interaction between a hydrogen and an electronegative atom.

4 0
3 years ago
Help me ASAP !!!!!!! Please give me some qestions for calculating number of moles
Leya [2.2K]
If your talking about mole. p



1 mole of water weighs 18 g

Therefore 0.5 mole of water weighs 9 g

According to Avagadro,

1 mol = 6.023 **10^23

atoms

So,

0.5 mol = 3.0115 **10^23

molecules of water

Each water molecule contains 2 hydrogen atoms .

Therefore

2** 3.00115**10^23

atoms of hydrogen are present in 9g of water

Answer:

The answer is

6.02⋅1023
3 0
3 years ago
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