3 years ago

Where would you expect to find an element with the greatest electronegativity?

Chemistry

1 answer:

beks73 [17]3 years ago

4 0

As you move from left to right of the periodic table, the element becomes more negative.

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How do the circulatory and the excretory systems work together to maintain the human body on a daily basis?

mr_godi [17]

The circulatory system picks up nitrogenous wastes from the cells and delivers them to the kidneys. The kidneys remove these wastes from the blood and concentrates them into the urine that is eliminated from the body.

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3 years ago

Two hydrogen atoms collide in a head on collision and end up with zero kinetic energy. Each then emits a photon of 121.6 nm (n=2

Zinaida [17]

Explanation:

Expression for the kinetic energy is as follows.

K.E = $\frac{1}{2}mv^{2}$

Now, total kinetic energy will be as follows.

K.E = $2 \times \frac{1}{2}mv^{2}$ = $m \times v^{2}$

Since, this energy converts into electromagnetic radiation of wavelength 121.6 nm.

Relation between energy and photon is as follows.

Energy of photon = $\frac{hc}{\lambda}$

= $\frac{6.626 \times 10^{-34} \times 3 \times 10^{8}}{121.6 \times 10^{-9}}$

= $1.63 \times 10^{-18} J$

$m \times v^{2} = 1.63 \times 10^{-18}$

v = $\sqrt{\frac{1.63 \times 10^{-18}}{1.67 \times 10^{-27}}$

= $3.12 \times 10^{4}$ m/s

Thus, we can conclude that atoms were moving at a speed of $3.12 \times 10^{4}$ m/s before the collision.

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3 years ago

The paths in which electrons travel are called what ovals ,paths,circles,orbitals

PolarNik [594]

The paths in which electrons travel are called orbitals.

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3 years ago

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Do blood cells have a rigid of cells walls

KatRina [158]

<em>Yes</em> the blood cells have a rigid of cell walls as their cell walls are cell membrane.

4 0

3 years ago

Evaluate this dimensional analysis setup. A paperclip is 3.2 cm long. How many paperclips would fit in

Alika [10]

Answer:

100 yard = 9144 centimeters

9144 / 3.2 = 2,8575 round off

= 2,858 paperclips

Explanation:

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3 years ago

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