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
Vinil7 [7]
3 years ago
6

What is the percent by mass of calcium in calcium carbonate,

Chemistry
1 answer:
motikmotik3 years ago
5 0

What is the percent by mass of calcium in calcium carbonate, CaCO3? (Molar mass of CaCO3 = 100.09 g/mol)

Answer: 40.04 percent

You might be interested in
A 2.00 L sample of gas at 35C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperatu
Anastaziya [24]

Answer:

The sample will be heated to 808.5 Kelvin

Explanation:

Step 1: Data given

Volume before heating = 2.00L

Temperature before heating = 35.0°C = 308 K

Volume after heating = 5.25 L

Pressure is constant

Step 2: Calculate temperature

V1 / T1 = V2 /T2

⇒ V1 = the initial volume = 2.00 L

⇒ T1 = the initial temperature = 308 K

⇒ V2 = the final volume = 5.25 L

⇒ T2 = The final temperature = TO BE DETERMINED

2.00L / 308.0 = 5.25L / T2

T2 = 5.25/(2.00/308.0)

T2 = 808.5 K

The sample will be heated to 808.5 Kelvin

7 0
3 years ago
Aspirin can be prepared from salicylic acid ( C 7 H 6 O 3 CX7HX6OX3), which has a molar mass of 138.12 g/mol, and acetic anhydri
pychu [463]

Answer: The theoretical yield of aspirin is 4.14 g

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}  \text{Moles of salicylic acid}=\frac{3.20g}{138.12g/mol}=0.023moles

mass of acetic anhydride = density\times volume =1.082g/ml\times 3.71ml=4.01g

\text{Moles of acetic anhydride}=\frac{4.01g}{102.04g/mol}=0.039moles

C_9H_6O_3+C_4H_6O_3\rightarrow C_9H_8O_4+C_2H_3O_2  

According to stoichiometry :

1 mole of salycylic acid require 1 mole of acetic anhydride

Thus 0.023 moles of  salycylic acid require=\frac{1}{1}\times 0.023=0.023moles  of acetic anhydride

Thus salycylic acid is the limiting reagent as it limits the formation of product and acetic anhydride is the excess reagent.

As 1 mole of salycylic give = 1 mole of aspirin

Thus 0.023 moles of salycylic acid give =\frac{1}{1}\times 0.023=0.023moles  of aspirin

Mass of aspirin = moles\times {\text {Molar mass}}=0.023moles\times 180.15g/mol=4.14g

Thus theoretical yield of aspirin is 4.14 g

4 0
3 years ago
Indicate how you might prepare acetic acid from ethene
ruslelena [56]
Acetic acid can be prepared from ethane by oxidizing it. Acetic acid is generally a carboxylic acid. These acids can be made by the oxidation of alcohols using potassium dichromate(VI) solution with sulfuric acid. Ethane is made into acetic acid in two steps. First it is formed into an aldehyde and then to acetic acid.
8 0
3 years ago
Name NaCl; is it a) molecular b) ionic c) elemental d) strong electrolyte, e) weak electrolyte f) non-electrolyte g) acid h) bas
ioda

Answer:

i)salt

Explanation:

NaCl is a neutral salt formed by reacting a strong acid HCl and a strong base NaOH. It is also ionic in nature.

It is also called common salt or table salt as it is used as edible in daily our life.

4 0
3 years ago
Why would the electrolysis reaction stop if the battery was removed
s344n2d4d5 [400]

If the battery was removed, the energy produced by the battery would not be able to continue its path along the circuit.

8 0
2 years ago
Other questions:
  • Primaries, the secret ballot, and the use of
    7·1 answer
  • If an isotope decay by process of beta emission
    8·1 answer
  • ___Li+ __Br, - _LiBr,
    13·1 answer
  • What is a property of gold
    9·1 answer
  • Layer of Earth made up of the crust and upper mantle
    15·1 answer
  • What is a solution?
    15·1 answer
  • True or False:
    6·1 answer
  • Na3PO4+_CaCl2-->_NaCl + __Ca3(PO4)2​. NEED HELP ASAP
    7·1 answer
  • What does it mean when it asks for the planet’s composition?
    10·2 answers
  • Please follow me thanku​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!