Answer:
- <u><em>Option a. 6200 K</em></u>
Explanation:
<u>1) Data:</u>
- V₁ = 0.66 liter
- P₁ = 42.9 mmHg
- T = 261.2 K
- T₂ = ?
- V₂ = 7.63 liter
- P₂ = 872.15 mmHg
<u>2) Formula:</u>
Combined law of gases:
<u>3) Solution:</u>
T₂ = P₂ V₂ T₁ / (P₁ V₁)
T₂ = 872.15 mmHg × 7.63 liter × 261.2 K / ( 424.9 mmHg × 0.66 liter)
T₂ = 6198 K
- Rounding to 2 significant figures, that is 6200 K, which is the first choice.
It decreases because it is losing an electron
Answer:
3.4 moles of silver * 107.868 grams of silver/1 mole of silver = 370 grams of silver.
Explanation:
According to the NYS Reference Table, one mole of silver equates to 107.868 grams. Therefore, if you want to convert from moles to grams, the mole unit should be on the bottom, since it is the unit being cancelled out. Above the mole unit should be the gram unit, since it is the unit you want to convert to. Once you do the math with significant figures, the solution turns out to be 370 grams of silver.
Answer:
The type of bonding does carbon dioxide have is covalent bonding.
Explanation:
There are 2 broadly types of chemical bonds present:
1. <u>Covalent bond:</u> This bond is present when there is sharing of electrons between two elements.
2.<u> Ionic bond:</u> This type of bond is formed when there is a complete transfer of electrons from one element to another element. In this bonding one element is always a metal and another is a non-metal.
We are given that a carbon atom is double bonded to two oxygen atoms. <u>Carbon and oxygen both are non-metals and hence, the bonds between them will be purely covalent in nature.
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Also, the valency of the carbon atom is 4. Thus, in the given case, the carbon atom is bonded to 2 oxygen atoms via double bonds. Thus, they all complete their octet by sharing the electrons.
<u>Hence, the type of bonding does carbon dioxide have is covalent bonding.</u>
