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Karo-lina-s [1.5K]
2 years ago
11

I need help fast answering these questions plzzz!! NO LINKS

Chemistry
1 answer:
Sindrei [870]2 years ago
4 0

Answer:

1. physical property

2. chemical property

3. physical change

hope this helps

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Batteries are a source of __________ energy.<br> chemical<br> potential<br> mechanical
dimaraw [331]

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Batteries store chemical energy

Explanation:

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Which of the following is an oxide which is strongly acidic?
borishaifa [10]

Answer:

answer of your question is 4th

Explanation:

P205

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Find the average atomic mass of neon, given the atomic masses and relative abundance of its three isotopes.
Lyrx [107]
<span>19.992*0.9048+20.993*0.0027+21.991+0.0925 = </span><span> 20.1797 amu (C)</span>
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Consider two different ions. The anion has a valence of -2. The cation has a valence of +2. The two ions are separated by a dist
strojnjashka [21]

Answer:

Force of attraction = 35.96 \times 10^{27}N

Explanation:

Given: charge on anion = -2

Charge on cation = +2

Distance = 1 nm = 10^{-9} m

To calculate: Force of attraction.

Solution: The force of attraction is calculated by using equation,

F = \dfrac{k \times q_1 q_2}{ \r^2} ---(1)

where, q represents the charge and the subscripts 1 and 2 represents cation and anion.

k = 8.99 \times 10^9 \ Nm^{2}C^{-2}

F = force of attraction

r = distance between ions.

Substituting all the values in the equation (1) the equation becomes

F = \dfrac{8.99 \times 10^9 \times 2 \times 2}{ \left ( 10^-9 \right )^2 }

Force of attraction = 35.96 \times 10^{27}N

6 0
3 years ago
True or false(Internal forces act on the outside of an object, and external forces act within an object.)
kkurt [141]
False I’m not sure exactly
4 0
2 years ago
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