Answer:
=C₄H₄O₂
Explanation:
Given the empirical formula of a molecule, the he the quotient of the molecular mas and and the empirical mass=constant.
84.0 g/mol/mass of(C₂H₂O)=constant
=84/(12×2+1×2×16)
=84/42
=2
Therefore, the molecular formula is (C₂H₂O)₂=C₄H₄O₂
Answer:
15.04 mL
Explanation:
Using Ideal gas equation for same mole of gas as
Given ,
V₁ = 21 L
V₂ = ?
P₁ = 9 atm
P₂ = 15 atm
T₁ = 253 K
T₂ = 302 K
Using above equation as:
Solving for V₂ , we get:
<u>V₂ = 15.04 mL</u>
Answer: First subtract 32 degrees, then multiply the result by 5/9 (0.556 on a calculator). For example, suppose a thermometer reads 68 degrees Fahrenheit. Subtract 32 from 68, leaving 36. Multiply 36 by 5/9, which equals 20 degrees Celsius.
Explanation:
Sodium belongs to Group 1A. It means that sodium has 1 valence electron. It needs to complete its octet electron or have the same configuration of a noble gas to become a stable ion. It would likely to release 1 electron to complete its octet than accept 7 more. Therefore, its ion form would be Na+.
<h3>What's Electronic configuration?</h3>
- The arrangement of an snippet's or patch's( or other physical structure's) electrons in their infinitesimal or molecular orbitals is known as the electron configuration in infinitesimal drugs and amount chemistry.
- For case, the neon grain's electron configuration is 1s2 2s2 2p6, which means that 1, 2 and 6 electrons, singly, are present in each of the 1s, 2s, and 2psubshells.
- According to electronic configurations, each electron moves collectively within an orbital while being girdled by an average field produced by all other orbitals.
- Slater determinants or configuration state functions are used to mathematically describe configurations.
<h3>What part does electronic configuration play?</h3>
- The chemical responses that an snippet can engage in as well as the types of motes that tittles can combine into to produce more complex composites depend on the electrical configuration of the snippet.
Learn more about electronic configuration here:
brainly.com/question/14283892
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Answer:
The second choice: physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved
(WAS ALREADY ANSWERED PREVIOUSLY)
