Of the following choices, the best conductor is _____. iron copper steel rubber

Answers

Answer 1

Answer: Metals are usually good conductors because they have abundant free negative charges, or electrons.

The answer is Copper

Answer 2

Answer: Copper because not many impurities

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Write the complete name (prefix + unit) for each of the following numerical values:a) 0.10 g

b) 1 × 10^-6 g

c) 1000 g

d) 0.01 g

e) 0.001 g

f) 1 × 10^9 g

Answers

The (standard) unit of mass is gram. So, the complete name of each of the units is the name of the numerical value followed by the term "gram".

The complete names are:

1 decigram
1 microgram
1 kilogram
1 centigram
1 milligram
1 gigagram

In numerical representation of numbers, the meaning of the given numbers are:

$0.10 \to$ deci

$10^(-6) \to$ micro

$1000 \to$ kilo

$0.01 \to$ centi

$0.001 \to$ milli

$10^9 \to$ giga

To complete the names, we simply add "gram" to the above representations. So, we have:

$0.10 \to$ decigram

$10^(-6) \to$ microgram

$1000 \to$ kilogram

$0.01 \to$ centigram

$0.001 \to$ milligram

$10^9 \to$ gigagram

Read more about names of numerical values at:

brainly.com/question/10840907

Chlorine melts at 172 k what is chlorines melting point in C

Answers

<HTML><META HTTP-EQUIV="content-type" CONTENT="text/html;charset=utf-8"> K = 273.15 + C K = 172 so substitute 172 = 273.15 + C C = 172 - 273.15 = -101.15 </DIV>

A substance that can donate a pair of electrons to form a covalent bond is known as a(n) _____ base.

Answers

Answer : A substance that can donate a pair of electrons to form a covalent bond is known as a(n) Lewis-base.

Explanation :

According to the Lewis acid-base theory,

Lewis acid : It is a substance that can accepts pairs of electrons to form a covalent bond.

Lewis-base : It is a substance that can donates pairs of electrons to form a covalent bond.

For example :

$H^++OH^-\rightarrow H_2O$

In this reaction, $H^+$ ion is Lewis-acid and $OH^-$ ion is a Lewis-base. The $OH^-$ ion donates electrons to $H^+$ ion to form $H_2O$ .

Hence, a substance that can donate a pair of electrons to form a covalent bond is known as a(n) Lewis-base.

A substance that can donate a pair of electrons to form a covalent bond is known as a Lewis base. It is any substance that can donate a pair of nonbonding electrons. The Lewis theory suggests that acids react with bases to share a pair of electrons with no change of oxidation numbers of any atoms.

Need to lose one electron to form a stable octetb. alkali metals
c. alkaline earth metals
d. noble gases
e. lanthanides

Answers

Alkali metals need to lose 1 electron to form a stable octet.

alkali metals should loose one to make a stable octet

living organisms all contain fats that are called .... protiens, lipids, carbohydrates, nucleic acids?

Answers

Living organisms all contain fats that are called lipids. Lipids are long non polar biologic molecules, formed by functional blocks called fatty acids.Lipids are responsible for the storage of energy and make up the structure of the cell membranes. Fatty acids are long chain carboxilic acids.

The answer is Lipids. Hope it helps.

Doesn't hydrogen have one energy level assuming that we only have one electron and not an ion?

Answers

It may have one occupied energy level at a time since it only has one electron, but overall it has several energy levels.

Yes, Hydrogen has one energy level, (an S sub-level that can fill up to two electrons).

The only other confusing thing about Hydrogen I can think of, is that you will almost never find it existing as a single Hydrogen, but as H2....

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