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Daniel [21]
3 years ago
7

Which BEST describes the difference between speed and velocity? A) Velocity is instantaneous.

Chemistry
2 answers:
photoshop1234 [79]3 years ago
4 0

Answer:

D.

Explanation:

Speed is a scalar which has  rate of change only . Velocity has rate of change and direction making it a vector.

aleksandrvk [35]3 years ago
3 0

Answer:

Option D describe the best this statement .

Explanation:

As velocity is the quantity which includes the rate of change as well as direction

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Which of the following would you expect to form an ionic bond when combined?
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Ionic bond forms between metal and non-metal.

Na is a metal, and F is a nonmetal.

Na and F form ionic bond.

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Ñspent fuelî that can no longer be used to create energy.<br> nuclear waste ?
svetoff [14.1K]
Spent fuel that can no longer be used to create energy is waste. 
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Look at the bottom of the periodic table. There are two rows of elements separated from the others. Where do these
mina [271]

Answer:

The first row of elements fits in period <u>6</u>, after the element <u>lanthanum (La)</u>. The second row of elements fits in period <u>7</u>, after the element <u>actinium (Ac). </u>

I hope this helps!

4 0
3 years ago
Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds:(a) |(b) Sr(c) K(d) N(e) S(f)
Pavel [41]

Answer:

(a) I⁻ (charge 1-)

(b) Sr²⁺ (charge 2+)

(c) K⁺ (charge 1+)

(d) N³⁻ (charge 3-)

(e) S²⁻ (charge 2-)

(f) In³⁺ (charge 3+)

Explanation:

To predict the charge on a monoatomic ion we need to consider the octet rule: atoms will gain, lose or share electrons to complete their valence shell with 8 electrons.

(a) |

I has 7 valence electrons so it gains 1 electron to form I⁻ (charge 1-).

(b) Sr

Sr has 2 valence electrons so it loses 2 electrons to form Sr²⁺ (charge 2+).

(c) K

K has 1 valence electron so it loses 1 electron to form K⁺ (charge 1+).

(d) N

N has 5 valence electrons so it gains 3 electrons to form N³⁻ (charge 3-).

(e) S

S has 6 valence electrons so it gains 2 electrons to form S²⁻ (charge 2-).

(f) In

In has 3 valence electrons so it loses 3 electrons to form In³⁺ (charge 3+).

3 0
3 years ago
PLEASE HELP!!!!! ASAP this is due tomorrow and I don't get it help me with some problems I'll be so thankful.
nydimaria [60]
Try to search for the answer online!!!!!!!!
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