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
MrRissso [65]
3 years ago
7

What type of reaction is shown below? Check all that apply. Ca + 2H2O → Ca(OH)2 + H2 synthesis decomposition combustion single r

eplacement double replacement
Chemistry
2 answers:
andreyandreev [35.5K]3 years ago
8 0
<h2>Answer:</h2>

The third option is correct which is single replacement.

<h3>Explanation:</h3>

Ca + 2H2O → Ca(OH)2 + H2 .

  • In above reaction Ca take two OH- ions to become Ca(OH)2.
  • So it is replacement of one type of atoms or ions (single replacement).
  • If there is replacement of two type of ions/atoms then it will be double replacement.
  • It is also not combustion or decomposition.
Ksju [112]3 years ago
3 0

The balanced reaction is

Ca + 2H2O → Ca(OH)2 + H2

Here this reaction can be compared with

A + BC  ---> AB + C

So here one reactant (A) is accepting a group which is being given by another compound (BC) however the A is not giving any group / element or ion

So this single displacement

Similarly in the given reaction

the anion OH- is only being replaced

The element Ca accepts OH- and H2O loses the same group to form new element H2

So the correct answer is

Single replacement also known as single displacement


You might be interested in
You shake a can of soda and open it, which cause the pressure to decrease. what happens to the volume of the CO2. the soda​
navik [9.2K]

Answer: <em>When you take the top off of a bottle of soda, the pressure inside the bottle decreases and goes to the same pressure as the atmosphere. When that happens the carbon dioxide inside is no longer forced to be a liquid and turns back into a gas, causing the bubbles that we're so familiar with.</em>

Explanation:

However, producing foaming carbon dioxide gas by shaking a bottle of soda water is a physical change, while producing foaming carbon dioxide gas by combining baking soda and vinegar is a chemical change. ... Because no chemical bonds are broken and no new molecules are formed, this is a physical change in the system.

4 0
3 years ago
Of the choices, which metal element would be the most reactive? (Please explain why the answer is the answer).
mart [117]

Answer:

sulfur

Explanation:

sulfur because it have unknown metal

i just got done with the unit 2 weeks ago

7 0
3 years ago
Read 2 more answers
A non metal which is good conductor of electricity
Neporo4naja [7]
The non metals good conductivity any to conduct electric city any time because the metals when we keep into any switch board while we touch we will get shock but non metals not like that
7 0
3 years ago
Read 2 more answers
0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction
algol [13]

Reactant C is the limiting reactant in this scenario.

Explanation:

The reactant in the balanced chemical reaction which gives the smaller amount or moles of product is the limiting reagent.

Balanced chemical reaction is:

A + 2B + 3C → 2D + E

number of moles

A = 0.50 mole

B = 0.60 moles

C = 0.90 moles

Taking A as the reactant

1 mole of A reacted to form 2 moles of D

0.50 moles of A will produce \frac{2}{1} = \frac{x}{0.50}

thus 0.50 moles of A will produce 1 mole of D

Taking B as the reactant

2 moles of B reacted to form 2 moles of D

0.60 moles of B reacted to form x moles of D

\frac{2}{2} = \frac{x}{0.6}

x = 2 moles of D is produced.

Taking C as the reactant:

3 moles of C reacted to form 2 moles of D

O.9 moles of C reacted to form x moles of D

\frac{2}{3} = \frac{x}{0.9}

= 0.60 moles of D is formed.

Thus C is the limiting reagent in the given reaction as it produces smallest mass of product.

5 0
3 years ago
Some one please help me ​
Norma-Jean [14]

Answer:

C.4

Explanation:

6 0
3 years ago
Other questions:
  • Hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer indu
    12·1 answer
  • 8. An atom has 9 protons, which element is it?​
    14·2 answers
  • Question 10
    14·1 answer
  • What Element am I?
    11·1 answer
  • Help me please!! :D​
    14·1 answer
  • Determine the empirical formula for C6H3Br3.
    7·1 answer
  • ENG
    11·1 answer
  • Which organs are part of the respiratory system ​
    13·1 answer
  • 6) Which type of orbital is represented by this image?"<br> Z,Y,X
    13·1 answer
  • Compared to an atom of C-14, an atom of C-12 has a lesser
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!