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
BaLLatris [955]
4 years ago
14

When calcium carbonate is heated, it produces calcium oxide and carbon dioxide. The equation for the reaction is CaCO3(s) CaO(s)

CO2(g). How many grams of calcium carbonate (molar mass
Chemistry
1 answer:
KATRIN_1 [288]4 years ago
7 0

When calcium carbonate is heated, it produces calcium oxide and carbon dioxide. The equation for the reaction is CaCO3(s) CaO(s) CO2(g). How many grams of calcium carbonate (molar mass = 100 g/mol) need to decompose to produce 44.5 g of Calcium oxide.

Answer: 79.5 grams

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP, contains avogadro's number 6.023\times 10^{23} of particles and weighs equal to the molecular mass of the substance.

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

According to stoichiometry :

1 mole of CaO is produced by 1 mole of CaCO_3

That means 56 g of CaO is produced by 100 g of CaCO_3

Thus 44.5  g of CaO is produced by =\frac{100}{56}\times 44.5=79.5g of CaCO_3

Thus 79.5 g of CaCO_3 need to decompose to produce 44.5 g of Calcium oxide.

You might be interested in
What type of flower is this? This is for a science project.
kenny6666 [7]

I believe that is a plant called Wisteria.

4 0
3 years ago
Read 2 more answers
Help please I’m confused
Debora [2.8K]

Answer:1 answer number 1

Explanation:

5 0
3 years ago
1 How many moles of solute are in:
Sonbull [250]

Moles of solute for both a and b are the same = 1 mol

<h3>Further explanation</h3>

Given

a 500 cm³ of solution, of concentration 2 mol/dm³

b 2 litres of solution, of concentration 0.5 mol/dm³

Required

moles of solute

Solution

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

Can be formulated :

\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}

a.

V = 500 cm³ = 0.5 L

M = 2 mol/L

n=moles = M x V

n = 2 mol/L x 0.5 L

n = 1 mol

b.  

V = 2 L

M = 0.5 mol/L

n=moles = M x V

n = 0.5 mol/L x 2 L

n = 1 mol

5 0
3 years ago
5. Which of the following is the best explanation why a reaction in a closed container can appear to stop before all the reactan
Alex

Answer: The forward and reverse reactions eventually reach the same rate.

Explanation:

The reactions which do not go on completion and in which the reactant forms product and the products goes back to the reactants simultaneously are known as equilibrium reactions.

Equilibrium state is the state when reactants and products are present but the concentrations does not change with time.

The equilibrium is dynamic in nature and the reactions are continuous in nature. Rate of forward reaction is equal to the rate of backward reaction and it appears as it has stopped.

4 0
4 years ago
Which of the following is an example of element? A.Water B.Chlorine C.Carbon Dioxide D.Sugar
prisoha [69]
The answer is B chlorine. Chlorine is and elements and the others are compounds.
8 0
3 years ago
Other questions:
  • What chemicals would be needed to create a mint that actually cleaned teeth while offering flavors and consumable chemicals? I'd
    15·1 answer
  • jalyn ran at speed of 3 m/s then came to a sudden stop during a time period of 3 s. what was his acceleration​
    13·1 answer
  • What ion carries two negative charges and is isoelectronic with k+?
    5·1 answer
  • Draw and label the parts of a helium atom. Include the mass and charge of each subatomic particle.
    10·1 answer
  • when 0.72 g of a liquid is vaporized at 110° C and 0.967 atm, the gas occupies a volume of 0.559L. The empirical formula of the
    9·1 answer
  • Does the energy go from the surrounding to the chemicals or from the chemicals to the surround in an exothermic reaction?
    6·1 answer
  • 10. Which of the following group of colors of the visible light is listed from
    11·1 answer
  • Natural gas is stored in a spherical tank at a temperature of 13°C. At a given initial time, the pressure in the tank is 117 kPa
    6·1 answer
  • Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water
    13·1 answer
  • What is the percentage of nitrogen, by mass, in calcium nitrate?.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!