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Misha Larkins [42]
2 years ago
15

Is the bond type of PCl3 polar or nonpolar?

Chemistry
1 answer:
Maru [420]2 years ago
6 0
The molecular polarity and bond type of PCl3 is polar.
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What has 39 neutrons which element
Rasek [7]

No of Neutrons =Mass No-No of protons

  • Proton=Neutron+1

\\ \sf\longmapsto x+1=39

\\ \sf\longmapsto x=39-1=38

  • Hence it has atomic no 38

The element is Stroncium(Sr)

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Which of the following occurs as temperature increases?
marin [14]
The answer is B Solubility Increases
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What happens to the density of a substance when it is heated? Explain your answer.
hoa [83]

Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density.

From: www.middleschoolchemistry.com

7 0
3 years ago
Boron has two isotopes, Boron 10 which has a mass of 10.0129 amu and Boron-11 with a mass of 11.0093 amu. B-10 occurs 84.74% of
podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation   </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  + ...

The average atomic mass of boron :

\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu

3 0
3 years ago
Where is the genetic code located again in the dna molecule again?
Pie

Answer:

The DNA is in the nucleus.

Explanation:

The nucleus is the power house of the cell, the little sting things inside are the strands of DNA.

8 0
3 years ago
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