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Ierofanga [76]
3 years ago
10

Help asap i don’t understand at all lol

Chemistry
2 answers:
kvv77 [185]3 years ago
6 0

Answer:

a, to reduce air bubbles

Explanation:

all its asking, is what is the purpose of the cover. and a is the most reasonable out of all of them, even though none of them make any sense.

OleMash [197]3 years ago
4 0
To reduce air bubbles
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Compound b has a molecular formula of c7h16o. what is the unsaturation number (un) or double-bond equivalent (dbe)?
aksik [14]

Answer: -

Zero

Explanation: -

Double bond equivalent or level of unsaturation is the number of unsaturation present in a organic molecule. The term unsaturation may refer to a double bond or a ring system.

The double bond equivalent for an organic compound can be found out by the help of the formula

DBE = C+1 -0.5 H - 0.5 X + 0.5 N

The chemical formula of the compound B = C₇H₁₆O

So there are 7 carbons, 16 hydrogens and 1 oxygen. There is no halogen or nitrogen.

Plugging into the formula,

DBE = 7 + 1 - 0.5 x 16

      = 0

Thus there is no unsaturation or double bond present in the compound B with the molecular formula C₇H₁₆O

6 0
3 years ago
Given that oxygen has an atomic number of 8.
Tcecarenko [31]

Answer:

Oxygen (O), for example, has three naturally occurring isotopes, which can be written as 8/16O, 8/17 O, and 8/18O.

Explanation:

7 0
3 years ago
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Nacl , or halite, dissolves in water. which type of bond is most abundant which allows it to dissolve?
Hitman42 [59]
Intermolecular bonding:
Water is a polar molecule exhibit dispersion forces and hydrogen bonding
Salt is a polar molecule exhibit dispersion forces and dipole dipole bonding

Same bonding capacity therefore similar bonding capacity, therefore salt able to dissolves in water
3 0
3 years ago
How much heat is required to change 100.0g of ice at 0C into water at 0C?
Oduvanchick [21]

Answer:

5 degrees required for ice

5 0
3 years ago
Can someone please help me?
andrew11 [14]

Answer:the mass of the gases and ash should be equal the mass of the initial stack of newspapers, there are equal number of atoms on both sides

Explanation:no matter what form the newspaper would take the mass stays the same because all you did is burn it, conserve means that each atom's mass will stay the same no matter what.

6 0
3 years ago
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