When the compound Na2S forms what happens to the Na and S ions

Answers

Answer 1

Answer: nothing, ATOMS lose or gain electrons to become IONS
Two Na ATOMS lose 1 electron each and 1 S ATOM gains 2 electrons

Answer 2

Answer: Since sodium ions each have a single positive charge (lacking one electron in its valence orbital) and sulfur ions each have a 2- charge (having two extra electrons in its valence orbital), the compound Na2S forms when two sodium ions are ironically bound to a central sulfur.

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10. A loud motorcycle passes by the front of Bill's house. What mediumdoes the sound wave travel through to get from the motorcycle to Bill's
ears?
Answers:
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Answers

Answit would be air because only electromagnetic waves and some others travel thru a vacuum fam

Explanation:

Answer: Air

Explanation:

What is a period and how does it work

Answers

a period is a form of grammer , and it is used to end a sentence

A period can be the veritcal columns designating elements on the periodic table.

sla’s change in velocity is 30 m/s, and Hazel has the same change in velocity. Which best explains why they would have different accelerations?

Answers

Because acceleration depends not only on the change in velocity.
It also depends on the time during which the change occurs.
The formula is

Acceleration = (change in velocity) divided by (time for the change) .

Maybe Sla changed his velocity in 3 seconds, but Hazel
took all morning to change hers. In that case, even though
the amounts of change were equal, the times were different,
so the quotients of (change/time) were different.

True or false the number of times a machine multipies effort force is a mechanical atlantis

Answers

Answer: i think its true

Explanation:

An object is thrown up into the air going 9m/s. How fast is it going 2 seconds later?

Answers

As per the question, the object is thrown in vertically upward direction.

The initial velocity of the ball [u] = 9 m/s.

We are asked to calculate the velocity of the ball after 2 second.

When the ball goes up, the only force that acts on the ball is the force of gravity.

Hence the acceleration of the ball is nothing else than acceleration due to gravity i.e g and it is downward in direction.

Here, it will be considered negative as it is downward in direction .

From equation of kinematics we know that-

v = u +at [Here v is the final velocity and a is the acceleration.

= 9 +[-9.8]×2 m/s $[g =9.8m/s^2]$

= 9-19.6

= -10.6 m/s

Here the negative sign indicates that the ball is falling downward. It is coming back after reaching its maximum height.

Here the total time of flight of the ball is-

$T= 2*(u)/(g)$

$= 2*(9)/(9.8) seconds$

$= 1.8367\ seconds$

If the ball is thrown from certain height from the ground, then the velocity of the ball will be the calculated value.

If the ball is thrown from the ground, obviously the ball will heat the ground after 1.8367 seconds later.So the velocity of the ball will be zero after 2 seconds.

If launched at the right speed, what could eventually happen to objects launched from Newton's theoretical cannon on the top of a mountain?

Answers

If the speed is higher than the orbital velocity, but not high enough to leave Earth altogether (lower than the escape velocity), it will continue revolving around Earth along an elliptical orbit. (D) for example horizontal speed of 7,300 to approximately 10,000 m/s for Earth.

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need help with the ones that have numbers on the sides.#1 #2 #3 #4 please help.i will pick fair brainliest answer