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HACTEHA [7]
3 years ago
11

Which element in period 2 has less mass

Chemistry
1 answer:
LekaFEV [45]3 years ago
4 0
The element that less mass in period two is Beryllium.
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An exothermic reaction
Irina-Kira [14]

Answer:

the energy of the products of the cause of reactants.It's most common with endothermic reaction but vice-versa.

Explanation:

5 0
3 years ago
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What is the expected major organic product from the treatment of 4-methyl-2-pentyne with excess hydrogen in the presence of a pl
tatiyna

Answer:

(Z)-4-methyl-2-pentene

Explanation:

Hydrogenation  is a syn addition. This implies that the hydrogen atoms add to the same face of the multiple bond.

Hence, if we have the alkyne,  4-methyl-2-pentyne which reacts with excess hydrogen in the presence of a platinum catalyst, we obtain  (Z)-4-methyl-2-pentene since the hydrogen atoms add on the same side of the multiple bond.

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3 years ago
According to Le Chatelier's principle, what happens to the equilibrium constant (K) when the concentration of the reactants is d
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Answer:

The value of the equilibrium constant (K) remains the same.

Explanation:

A state of dynamic equilibrium is said to have been achieved in a reaction system when the rate of forward reaction equals the rate of reverse reaction.

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3 years ago
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Ice bomb
Ahat [919]

Answer:

Formation of Gas

Explanation:

The solid Carbon Dioxide warms it sublimates to gas. With limited room for the gas to expand, the pressure in the bottle increases.

5 0
3 years ago
580 grams of boiling water (temperature 100°C, specific heat capacity 4.2 J/K/gram) are poured into an aluminum pan whose mass i
fenix001 [56]

Answer:

81.04°C

Explanation:

Heat loss by water = Heat gained by Aluminum

Heat loss by water;

H = MCΔT

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M = 580g

c = 4.2

H = 580 * 4.2 (100 - T2)

H =  243600  - 2436T2

Heat ganed by Aluminium

H = MCΔT

ΔT = T2 - 24

M = 900g

c = 0.9

H = 900 * 0.9 (T2 - 24)

H = 810 T2 - 19440

243600  - 2436T2 = 810 T2 - 19440

243600 + 19440 =  810 T2 + 2436T2

263040 = 3246 T2

T2 = 81.04°C

Assumption;

Assume that energy diffuses throughout the pan and water so that all parts reach the same final temperature.

3 0
4 years ago
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