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
taurus [48]
3 years ago
13

Find the percentage of mass in each of the element Ca ( HCO3)2 (Ca= 40, H = 1, O = 16, C= 35)​

Chemistry
1 answer:
Alex787 [66]3 years ago
3 0

Answer:

% Ca = 24.69%

% H = 1.2%

% C = 14.8%

% O = 59.25%

Explanation:

The percentage by mass of each element can be calculated by dividing the mass of each element in the compound by the molar mass of the compound.

Molar mass of Ca(HCO3)2

Where; (Ca= 40, H = 1, O = 16, C= 12)

= 40 + {1 + 12 + 16(3)}2

= 40 + {13 + 48}2

= 40 + {61}2

= 40 + 122

= 162g/mol

- % mass of Ca = 40/162 × 100

= 0.2469 × 100

= 24.69%

- % mass of H = 2/162 × 100

= 0.012 × 100

= 1.2%

- % mass of C = 24/162 × 100

= 0.148 × 100

= 14.8%

- % mass of O = 96/162 × 100

= 0.5925 × 100

= 59.25%

You might be interested in
Write the electronic configuration of the first 20 element​
yuradex [85]
Argon -Potassium-carbon
3 0
2 years ago
What type of large molecule is responsible for repair and growth of cells?
Oliga [24]

Answer:

The answer is a. proteins

7 0
3 years ago
Read 2 more answers
How does the Doppler effect related to the universal expanding?
tensa zangetsu [6.8K]
The Doppler effect doesn't just apply to sound. It works with all types of waves, which includes light. Edwin Hubble used the Doppler effect to determine that the universe is expanding. Hubble found that the light from distant galaxies was shifted toward lower frequencies, to the red end of the spectrum. This is known as a red Doppler shift, or a red-shift. If the galaxies were moving toward Hubble, the light would have been blue-shifted.

7 0
2 years ago
Glycerine is known as a negative catalyst.why?​
ioda

Answer:

The presence of 1-2% ethanol as catalyst, suppresses the oxidation of chloroform with oxygen to give a poisonous gas called phosgene. ... Here glycerol acts as negative catalyst. Criteria or characteristics of catalysts. i. The mass and chemical composition of catalyst should remain unchanged at the end of the reaction.

Explanation:

6 0
3 years ago
What is melted rock and minerals found beneath earths rust called
satela [25.4K]
Magma- hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling. Hope this helps!
3 0
2 years ago
Other questions:
  • What is the formula for diphosphorus tetrabromide
    15·1 answer
  • what type of recording do you think would be the best method of submitting evidence to a crime lab? why?
    8·2 answers
  • What do you call material formed by weathering that is then eroded and deposited
    9·1 answer
  • What makes some collisions elastic and others inelastic
    9·2 answers
  • Which substance can not be broken down by a chemical change? A)methane B)propanal C) tungsten D)water
    10·2 answers
  • A solution is made by adding 360 g of table salt into 1 L of water. The solubility of the salt is 36 g/100 mL water. Which term
    15·2 answers
  • 3KOH + FeCl3 → Fe(OH)3 + 3KCl
    13·1 answer
  • What is the potential difference across a light bulb when there is 32 A of current and 8 Ω of resistance from the filament.
    8·1 answer
  • Compared to compounds with network structures, compounds arranged in molecules (covalent bonds) have ____________ melting points
    12·1 answer
  • Determine the mass in grams of 2.25 × 10²¹ atoms of copper.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!