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Tanzania [10]
1 year ago
15

Why does the reactivity of nonmetals increase moving left to right on the periodic table?

Chemistry
1 answer:
zhuklara [117]1 year ago
4 0

Answer: This is because the number of shell increases .

Explanation: On moving from left to write on the periodic table the reactivity of non metals increases because number of shells increases and the force with which the nucleus hold electrons decreases.

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What triggers the onset of estrus in most seasonal breeders
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· Litter loss triggers estrus in a nonsocial seasonal breeder

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Calculate the average atomic mass of rubidium. Rubidium has two isotopes, 85Rb and 87Rb. 85Rb has an atomic mass of 84.912 amu a
astraxan [27]
<span>Answer : The average atomic mass of rubidium = 85.468 Explanation: Given that 85Rb isotope has atomic mass of 84.912amu with abundance of 72.17% therefore we get 84.912 x 0.7217 = 61.281 and 87Rb isotope has atomic mass of 86.909 with abundance of 27.83% hence we get 86.909 x 0.2783 = 24.187 Thus we get 61.281 + 24.187 = 85.468 as the average atomic mass of Rubidium.</span>
4 0
3 years ago
What does it mean to say that a wave is cyclic, or periodic, disturbance?
Zina [86]

Answer:

Wave is a disturbance or energy that propagate through medium from one point to other point

So basically it is a flowing energy that flows into the medium and hence medium particles start oscillating about their mean position to and fro.

This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

This means the disturbance or energy continuously flow through the medium such that it will change the position of medium particle and this will be cyclic in order

For an example

y(x,t) = Asin(kx - ωt + φ)

So here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

Due to this phenomenon of repetition of its same position we can say that it is disturbance of wave is cyclic.

Explanation:

4 0
3 years ago
Distinguish<br>between<br>matter<br>and a substance​
Irina18 [472]

Answer:

Matter is a physical substance that contains mass. A substance is a particular kind of matter with uniform chracteristics.

Explanation:

Remeber that matter is anything that has mass and takes up space :)

8 0
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