Answer:
please mark as brainliest
6 Is your mean
Explanation:
Mean = sum of numbers/how many numbers there are
So first,
2+9+4+7+8= 30
Now,
30/5 = 6
The correct statements in regards to the interactions involved in the formation of chemical bonds are as follows:
1. When two electrons of hydrogen approach each other, each electron is attracted to the other nucleus.
2. The two electrons repel each other and
3. The two nuclei repel each other.
For a chemical bond to be formed by the hydrogen atoms, the attractive interactions between the two atoms must be greater than the repulsive interaction.
1.51 x 10²⁵atoms
Explanation:
Given parameters:
Mass of Na = 578g
Unknown:
Number of atoms = ?
Solution:
To find the number of atoms, we must first find the number of moles the given mass contains.
Number of moles = 
molar mass of Na = 23g
Number of moles = 
= 25.13moles
1 mole of a substance = 6.02 x 10²³atoms
25.13 mole of Na = 25.13 x 6.02 x 10²³atoms
This gives 1.51 x 10²⁵atoms of Na
Learn more:
Avogadro's constant brainly.com/question/2746374
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Yo sup??
1 lmole of O2 contains 22.4 litre
therefore 10.2 miles will contain
=10.2*22.4
=228.48 litre
Hence the correct answer is option D
Hope this helps
Answer:
two
Explanation:
The number of significant figures needed in the answer is 2.
This is because when finding the products of two numbers, the result is as accurate as the least number of significant figures of the numbers being multiplied.
Here the numbers being multiplied are;
1.31m
6.5m
1.31m has 3 significant figures
6.5m has 2 significant figures.
So, the product will have 2 significant figures
