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
grigory [225]
3 years ago
7

Classify each chemical reaction:

Chemistry
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

1) combustion

2) double replacement

3) combination

4) combustion

Explanation:

The combustion of a compound refers to the reaction of that compound with oxygen to produce heat and light. In reactions (1) and (4) above, ethanol and methane reacted with oxygen to yield carbon dioxde and water. This is a combustion reaction.

Reaction(2) is a double replacement reaction because the both cations exchange their anion partners in the product.

Reaction (3) is a combination reaction. It involves the joining of two elements to form a new compound.

You might be interested in
Calcium carbonate reacts with hydrochloric acid to form calcium chloride, carbon dioxide, and water. What mass of hydrochloric a
sergij07 [2.7K]

Answer:

3284.3 kg is the mass of HCl needed to produce 5000 kg of CaCl₂

Explanation:

This is the reaction:

CaCO₃ + 2HCl →  CaCl₂  +  CO₂  +  H₂O

Let's convert the mass of the product to moles (mass (g) / molar mas)

Firstly we must convert kg to g

1 kg = 1000 g

5×10³ kg . 1000 g / 1 kg = 5×10⁶ g

5×10⁶ g / 110.98 g/mol = 45053.1 moles

Ratio is 1:2 So, let's make a rule of three:

1 mol of CaCl₂ was produced by the use of 2 moles of HCl

So 45053.1 moles of salt, were produced by, the double of moles

45053.1 mol . 2 → 90106.2 moles

Let's convert the moles, to mass (mol . molar mass)

90106.2 mol . 36.45 g/mol = 3284375 g → 3284.3 kg

7 0
3 years ago
Both the volcano and the seamount chain are thought to be the result of
Kitty [74]

A.) answer is number a, hope this helps

6 0
3 years ago
Which equation represents the reaction of acetic (ethanoic) acid with water?
Verizon [17]
CH3COOH+H20 CH3COO-+H30+
7 0
3 years ago
Read 2 more answers
Which substance would retain the most heat for the longest period of time?
Harrizon [31]
<h3>Water</h3>

<em>Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius.</em>

  • For water, this amount is one calorie, or 4.184 Joules.
4 0
3 years ago
Read 2 more answers
Using the balanced equation below,
Zielflug [23.3K]

Answer:

Mass = 6.538 g

Explanation:

Given data:

Mass of zinc hydroxide produced = 9.65 g

Mass of zinc required = ?

Solution:

Chemical equation:

Zn + 2MnO₂ + H₂O      →      Zn(OH)₂ + Mn₂O₃

Number of moles of zinc hydroxide:

Number of moles = mass/molar mass

Number of moles = 9.65 g/ 99.42 g/mol

Number of moles = 0.1 mol

now we will compare the moles of zinc and zinc hydroxide,

                  Zn(OH)₂           :          Zn

                       1                  :          1

                    0.1                  :         0.1

Mass of zinc required:

Mass = number of moles × molar mass

Mass = 0.1 mol × 65.38 g/mol

Mass = 6.538 g

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is true about a spontaneous process? it releases energy, it does not require any external action to begi,
    5·1 answer
  • Describe why hydrogen bonds form between water molecules
    5·1 answer
  • What is the answer for number one please help
    15·1 answer
  • A chemist needs 225 ml of 2.4 m hcl. What volume of 12 m hcl must be mixed with water to form this solution?
    5·1 answer
  • 9. Which is a product of photosynthesis?
    14·1 answer
  • What is the reactant for sodium nitrate + water?
    14·1 answer
  • Which statement below BEST describes the difference between mixtures and pure substances? Group of answer choices Mixtures are m
    7·1 answer
  • A. How does the atomic radius change going down and across the periodic table?
    6·1 answer
  • PLZ HELP ME WITH MY WORK
    14·1 answer
  • The type of research in which one variable is changed to see its effect is:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!