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
Mariulka [41]
3 years ago
9

I need help ASAP!

Chemistry
1 answer:
MaRussiya [10]3 years ago
8 0
Calcium reacts gently with water to give hydrogen and calcium hydroxide, which is only slightly soluble, thus slows down the reaction.

It will be assumed that hydrochloric acid used is a dilute aqueous solution.

However, calcium reacts with hydrochloric acid to give calcium chloride which is readily soluble in water, and hydrogen, being a typical reaction of relatively active metals with acids.
Ca(s) + 2HCl(aq)  -> CaCl2(aq) +H2(g) ↑ + heat

The clues that it is a chemical reaction could be:
- formation of a new substance, gaseous hydrogen
- disappearance of a metallic solid in the solution
- heat formed during the vigorous reaction.

As silver is below hydrogen in the electrochemical series, it will not be expected to react with dilute hydrocloric acid. (however, it dissolves in oxidizing acid such as nitric acid, but not displacing hydrogen as a product).

You might be interested in
What shape would a molecule of carbon tetrachloride have?
Elden [556K]

Answer:

Tetrahedral

Explanation:

For the repulsion of the free electron pair theory, the shape of a molecule will be to repel the bonds and the free electrons on the central atom. In a molecule of carbon tetrachloride, the central atom (C) has no free electrons, so, the shape that repels better the charge is tetrahedral, as shown below.

3 0
3 years ago
Read 2 more answers
Relating ideas explain why ionic crystals melt at much higher temperatures than typical covalent molecular crystals.
gayaneshka [121]
Because of the way the temp is set up
6 0
3 years ago
The electronic configuration of an element is given below.
Shalnov [3]

Answer:

It is reactive because it has to gain an electron to have a full outermost energy level.

Explanation:

The electron configuration of oxygen is 1s2,2s2 2p4.

Oxygen is in group six in the periodic table so it has six electrons in its valence shell. This means that it needs to gain two electrons to obey the octet rule and have a full outer shell of electrons (eight).  

3 0
2 years ago
You have prepared a 1.0 M solution of CaCl2 in the laboratory.
Ratling [72]
It’s C I think and I’m not sure
6 0
3 years ago
an unknown sample with a mass of 50.0 grams changes from an initial temperature of 22.5°C to a final temperature of 32.4°C. It i
makvit [3.9K]

Answer:

Aluminum

Explanation:

7 0
3 years ago
Other questions:
  • How would a solution that is labeled 5.0 M would be read as?
    5·2 answers
  • How many atoms of carbon (C,12.01 g/mol) are in a diamond with a mass of 0.568 g?
    8·1 answer
  • Young's experiment is performed with light from excited helium atoms (λ = 496 nm). fringes are measured carefully on a screen 1.
    6·1 answer
  • A solution that has a pH of 2 is a?
    6·2 answers
  • How many atoms are in sodium hydroxide
    11·2 answers
  • which type of bonding involves sharing valence electrons, but the valence electrons aren't confined to a specific region between
    11·1 answer
  • 4. How many Carbon atoms are present in 1.00 mole of methane, CH,?
    9·1 answer
  • Conclusion definition pls?
    12·1 answer
  • Chemistry-mole calculations
    6·1 answer
  • Which is a possible heat capacity for a bomb calorimeter?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!