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3 years ago

10

If there is a graduated cylinder containing 20mL of water and a small rock is gently placed inside it, and the water level insid

e the graduated cylinder rises to 25mL...what is the volume of the small rock?

2 answers:

LekaFEV [45]3 years ago

8 0

Answer:

5

Explanation:

just subtract 20-25 and 5 is left over which is how much the water when up with the rock.

Vanyuwa [196]3 years ago

7 0

Answer:

5

Explanation:

quick maths

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Murljashka [212]

Answer:

2. The metal would lose one electrons and the non metal would gain one electrons

Explanation:

An atom of a certain element reacts with the atoms of other elements in order to fullfill its outermost shell (called valence shell).

We notice the following:

- The elements in Group 1 (which are metals) have only 1 electron in their valence shell

- The elements in Group 17 (which are non-metals) have 1 vacancy (lack of electron) in their valence shell

This means that in order for both an atom of group 1 and an atom of group 17 to fullfill the valence shell, they have to:

- The atom in group 1 has to give away its only electron of the valence shell

- The atom in group 17 has to gain one electron in order to fullfill the shell

Therefore, the correct option is

2. The metal would lose one electrons and the non metal would gain one electrons

7 0

3 years ago

Wassup everyone?????

ioda

Answer:

I'm good

Explanation:

What about you?

4 0

3 years ago

Which is the balanced equation for:<br> Al2O3 + Fe – Fe3O4 + AL

Sloan [31]

Answer:

4Al203 + 9Fe -> 3Fe3O4 + 8Al

Amount of Al on reactant side: 8

Amount of Al on product side: 8

Amount of O on reactant side: 12

Amount of O on product side: 12

Amount of Fe on reactant side: 9

Amount of Fe on product side: 9

6 0

3 years ago

Where is the mass of an atom found? Explain.

muminat

Explanation:

Over 99.9% percent of an atom's mass resides in the nucleus. The protons and neutrons in the center of the atom are about 2000 times heavier than the electrons orbiting around it.

Because the electrons are so light by comparison,they represent only a tiny fraction of a percent of the atom's total weight.

Hope this answer helps you!

4 0

3 years ago

A scientist has isolated a fatty acid that has 26 carbons. most of the carbon atoms in the fatty acid chain are connected by sin

Shtirlitz [24]

Answer:
<span>Based on giveninformation, the compound is a <u>Poly Unsaturated</u> fatty acid.

Explanation:
Fatty acids are carboxylic acids with -COOH functional group and a chain of hydrocarbons.

Fatty Acids are classified as,

i) Saturated Fatty Acids:
Those Fatty Acids in which there is no double bond between the carbon chain are called as saturated fatty acids.

Examples:
Lauric Acid </span>CH₃(CH₂)₁₀COOH<span>

Myristic Acid </span>CH₃(CH₂)₁₂COOH<span>

Palmitic Acid </span>CH₃(CH₂)₁₄COOH

ii) Unsaturated Fatty Acids:
Those Fatty Acids in which contain a single double bond (mono-unsaturated) or more than one double bond (poly-unsaturated) d between the carbon atoms in a chain are called as unsaturated fatty acids.

Examples:
<span>Linoleic acid
</span>
<span>Vaccenic acid

</span><span>Palmitoleic acid

The saturated fatty acid containing 26 carbon atoms is called as Cerotic acid. While cerotic acid containing a double bond at position 3 and 9 has a IUPAC name H</span>exacosa-3,9-dienoic acid with following structure.

3 0

3 years ago