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Annette [7]
3 years ago
11

How many atoms are in a 0.50 g sample of helium

Chemistry
1 answer:
Mrac [35]3 years ago
3 0
0.5 G is your answer for this question
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Describe how elements of different electronegativities can share electrons unequally, leading to the formation of a polar covale
Nesterboy [21]
A polar covalent bond is a covalent bond in
which the atoms have an unequal attraction for
electrons and so the sharing is unequal. ... The
atom with the greater electronegativity acquires
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6 0
2 years ago
The number of dots around an element symbol in a Lewis dot structure equals the total number of electrons in an atom of that ele
strojnjashka [21]
The number of dots represents the amount of valence electrons, which is the same as the last digit of the elements group number in ptof.
8 0
3 years ago
What type of bond is formed when atoms share electrons?
navik [9.2K]
Covalent bond is formed when atoms share electrons.
Hope this helps you.
5 0
3 years ago
What is the density of a rectangle solid with dimensions
Hunter-Best [27]

Answer:

5625000gm/cm^3

Explanation:

volume=w*h*l=25*15*5=1875cm^3

density=mass*volume

=1875*3000

=5625000gm/cm^3

8 0
3 years ago
The mass number of an atom is 15, and its atomic number is 7. The atom probably has... 8 neutrons in the nucleus. about as much
Artist 52 [7]

Answer: Option (a) is the correct answer.

Explanation:

Atomic number is the sum of only total number of protons present in an element. Whereas mass number is the sum of total number of both protons and neutrons present in an element.

For example, given atom has mass number as 15 and its atomic number is 7.

Therefore, number of neutrons present in it will be calculated as follows.

                    Mass number = no. of protons + no. of neutrons

                         15 = 7 + no. of neutrons

                    no. of neutrons = 15 - 7

                                               = 8

Thus, we can conclude that the given atom contains 8 neutrons in the nucleus.

3 0
3 years ago
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