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
madam [21]
3 years ago
6

Calcium carbonate forms limestone, one of the most common rocks on Earth. It also forms stalactites, stalagmites, and many other

types of formations found in caves. When calcium carbonate (CaCO3) is heated, it decomposes to form solid calcium oxide and carbon dioxide gas. Write the balanced equation and calculate how many liters of carbon dioxide will be produced at STP if 2.38 g of calcium carbonate reacts completely?
Chemistry
1 answer:
max2010maxim [7]3 years ago
3 0

Answer:  CaCO_3(s)\rightarrow CaO(s)+CO_2(g) , 0.533 L

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.

Number of moles =\frac{\text {given mass}}{\text {Molar mass}}

moles of calcium carbonate = \frac{2.38g}{100g/mol}=0.0238mol

As 1 mole of calcium carbonate produces = 22.4 L of carbon dioxide at STP

Thus 0.0238 moles of calcium carbonate produces =\frac{22.4 L}{1}\times 0.0238=0.533L of carbon dioxide at STP

You might be interested in
Carbon dioxide in the atmosphere can be reduced by _.*​
pychu [463]

Answer:

As the use of plants as carbon sinks can be undone by events such as wildfires, the long-term reliability of these approaches has been questioned. Carbon dioxide that has been removed from the atmosphere can also be stored in the Earth's crust by injecting it into the subsurface, or in the form of insoluble carbonate salts (mineral sequestration).

HOPE IT HELPS

TAKE CARE

Explanation:

6 0
3 years ago
Read 2 more answers
Which mineral(s) might you be examining if you place some hydrochloric (hcl) acid on a sample and it fizzes?
makvit [3.9K]
The minerals that one might be examining if you place some hydrochloric acid on a sample and it fizzes are Calcite and Dolomite.
Calcite and dolomite are very similar minerals. Both have the same hardness, the same rhombohedral cleavage, and are found in identical geologic settings. The best way to tell one from the other is the acid test; A drop of 1 M HCl on calcite produces an instant , obvious Fizz; a drop on dolomite produces slow or no obvious bubbling. 
4 0
3 years ago
In the reaction 2H2O (1)+ 2Cl^- (aq)= H2(g)+Cl2 (g)+ 2OH^-(aq), which substance is reduced?
Oksanka [162]

Answer:- C. H

Explanations:- Reduction is gain of electron. In other words we could say that decrease in oxidation number is reduction.

As per the rules, oxidation number of hydrogen in its compounds is +1(except metal hydrides) and the oxidation number of oxygen in its compounds is -2.

The oxidation number in elemental form is zero.

In H_2O , the oxidation number of H is +1 and oxidation number of O is -2. Oxidation number of Cl in Cl^- is -1. On product side, the oxidation number of hydrogen in H_2 is zero and in OH^- the oxidation number of H is +1 and that of O is -2. Oxidation number of Cl in Cl_2 is 0.

From above data, Oxidation number of O is -2 on both sides so it is not reduced.

Oxidation number of Cl is changing from -1 to 0 which is oxidation.

Oxidation number of H is changing from +1 to 0 which is reduction.

So, the right choice is C.H

8 0
3 years ago
How can we remove the hardness of water by boiling?​
pantera1 [17]

Heat makes it softer

5 0
3 years ago
What is the ph of a 0.014 M HCL solution?
Allushta [10]

Answer:

pH = 1.853

Explanation:

For every mole of hydrochloric acid, one mole of hydronium ion is required. Thus, in order to neutralize 0.014 moles of HCL, 0.014 moles of hydronium is required.

[H_3O^+] = [HCl] = 0.014

pH  = -log [H^+] = -log [H_3O^+]

Substituting the available values in above equation, we can say that   the pH of the solution is equal to

- log (0.014)

pH = 1.853

pH of a 0.014 M HCL solution = 1.853

8 0
3 years ago
Other questions:
  • How many mL of 50% (v/v) alcohol should be mixed with 10% alcohol to obtain 50mL of 35% (v/v) alcohol? Round to the hundredths p
    13·1 answer
  • What activity is considered a proper laboratory technique chem?
    6·1 answer
  • What is the mass percent of sodium in NaCl?<br> a)39.34%<br> b)60.66%<br> c)60.66%<br> d)78.68%
    5·2 answers
  • Sketch the structure of the nitrogen containing product that is formed when ethalymine reacts with water.
    6·1 answer
  • The recommended dose of aspirin will yield approximately 100.0 micrograms/mL in the blood. How many molecules of aspirin (C9H8O4
    13·1 answer
  • What is the balanced equation if copper metal reacts with oxygen gas to form copper oxide
    9·1 answer
  • The process that occurs when physical forces break rock into smaller pieces without changing the rock's chemical composition is
    5·1 answer
  • What type of reaction is the following reaction?<br> AgNO3+Na→ NaNO3 + Ag
    5·1 answer
  • How can criteria be used to help define the problem?
    15·1 answer
  • If the density of the gas is 1.2 g/L at 745. torr and 20 C, what is its molecular mass?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!