7 Scientists feel that human activity has affected and possibly altered the natural process of the carbon dioxide-oxygen cycle t
hat nature had previously kept in balance. In recent his OW have humans added to the carbon dioxide-oxygen cycle? 5.3(D) CA Releasing massive amounts of oxygen B Preventing heat from escaping Earth O Burning fossil fuels. like coal and oil D Rapid growth of plant producing farms
1 answer:
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Answer: Option (4) is the correct answer.
Explanation:
It is known that density is mass divided by volume.
Mathematically, Density =
Since, density is directly proportional to mass. So, more is the mass of an element more will be its density.
Mass of magnesium is 24.305 g/mol.
Mass of barium is 137.327 g/mol.
Mass of beryllium is 9.012 g/mol
Mass of radium is 226 g/mol.
Hence, radium has more mass therefore it will have the greatest density at STP.
<h3>Answer:</h3>
<u>Chemistry</u>
<u>Aqueous Solutions</u>
- States of matter
<u>Kinetics</u>
- Rate Laws
<u>Equilibrium</u>
- Equilibrium Reactions RxN ⇄
- Equilibrium Constants
- Equilibrium Expression:
*Note: Only gases and liquids affect equilibrium
<u>Step 1: Define</u>
[RxN - Balanced] 2H₂O (g) ⇄ 2H₂ (g) + O₂ (g)
<u>Step 2: Identify</u>
[Reactant] H₂O
- Coefficient of 2
[Product] H₂
- Coefficient of 2
[Product] O₂
- Coefficient of 1
<u>Step 3: Write K Expression</u>
- Substitute: