3 years ago

A. Na B. Al C. P D. Cl

Chemistry

1 answer:

bonufazy [111]3 years ago

7 0

Na bc less shielding

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2. The density of helium is 1.78 X 104 g/cm. What is this<br> density in Dg/um??

Zepler [3.9K]

Answer:

$d=1.78\times 10^{-7}\ Dg/\mu m^3$

Explanation:

Given,

The density of Helium is $1.78\times 10^4\ g/cm^3$

We need to find the density in Dg/μm

We know that,

1 g = 10 dg

1 cm³ = 10¹² μm³

So,

$d=1.78 \times 10^4\ g/cm^3\\\\=1.78 \times 10^4\times \dfrac{10\ dg}{10^{12}\ \mu m^3}\\\\=1.78\times 10^{-7}\ Dg/\mu m^3$

So, the density of Helium is equal to $1.78\times 10^{-7}\ Dg/\mu m^3$ .

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3 years ago

how can knowledge of percent composition help you as a consumer ? how can you promote responsible consumerism ?

Nonamiya [84]

Answer:

it is a nice question....my mind tells me that the first is it use me as a good vibes and can use to anything the second i will do my best too absorbe it.

Explanation:

Hope this help...

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3 years ago

1. A neutral atom has a mass number of 108 and an atomic number of 47.

erastova [34]

A. Silver

Proton- 47
Electrons- 47
Neutron- 61

108-47=61

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4 years ago

There are three ways to give an object a static charge. They are friction, conduction and induction. Two pieces of cellophane ta

kotykmax [81]

Answer:

b) The two pieces of tape will repel as both have obtained a static charge.

this is the right answer.

Explanation:

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3 years ago

Read 2 more answers

If such an ion is negatively charged and includes one or more oxygen atoms

professor190 [17]

Answer:

atom

Explanation:

The sodium atom has a single valence electron that it can easily lose. (If the sodium atom loses its valence electron, it achieves the stable electron configuration of neon.) The chlorine atom has seven valence electrons and can easily gain one electron.

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3 years ago