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Marrrta [24]
3 years ago
11

Someone please help me and answer my question asap. i need to turn my assignment in soon... please.

Chemistry
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

Explanation:

a. the salt produced would be Mg3N2(magnesium nitride)

b. magnesium loses 2 electron to form Mg2+ ion and nitrogen gains 3 electron to form n3-

when several of these ions come together 3 Mg2+ ion combine with 2 n3- ion to form Mg3N2 thus Mg getting six electron from nitrogen to form a ionic bond.

c. the reaction is not balanced Mg + N2 = Mg3n2

to make it balanced the reaction should be 3 Mg + N2 = Mg3N2.

the reaction was not balanced before because the number of Mg on both side of the reaction was not equal.

d. magnesium nitrate has formula Mg(NO3)2 is formed when Mg combines with nitrogen and oxygen Mg + N2 + o2

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Calculate the energy required to heat 406.0mg of cyclohexane from 33.5°C to 38.9°C . Assume the specific heat capacity of cycloh
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Answer:

The heat needed to warm 406.0 mg of cyclohexane from 33.5°C to 38.9°C is 209.22 Joules

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Q=mc\Delta T

Where:

Q = heat absorbed or heat lost

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ΔT = change in temperature of the substance

We have mass of cyclohexane = m = 406.0 mg = 0.4060 g

( 1 mg =0.001 g)

Specific heat of cyclohexane  = c = 1.85 J/g°CK

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Heat absorbed by the cyclohexane :

Q=0.4060 g\times 1.85 J/gK\times 278.55 K=209.22 J

The heat needed to warm 406.0 mg of cyclohexane from 33.5°C to 38.9°C is 209.22 Joules

5 0
3 years ago
Given that Rubidium has two isotopes, 85Rb and 87Rb. Calculate the average atomic mass of rubidium.
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Explanation:

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