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SVETLANKA909090 [29]
3 years ago
10

What is the process of old crust sinking back into the mantle? *

Chemistry
2 answers:
lapo4ka [179]3 years ago
7 0

The answer would be D. Subduction.

andrew11 [14]3 years ago
6 0

Answer:

the answer is the letter D.subduction

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Two descriptions for a sub-atomic particle are listed below:
Dmitrij [34]
Can not be D or B and A is not enough so C is right.
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The aromatic hydrocarbon cymene (C10H14) is found in nearly 100 spices and fragrances, including coriander, anise, and thyme. Th
andrezito [222]

Answer : The thermal energy produced during the complete combustion of one mole of cymene is -7193 kJ/mole

Explanation :

First we have to calculate the heat released by the combustion.

q=c\times \Delta T

where,

q = heat released = ?

c = specific heat of calorimeter = 3.640kJ/^oC

\Delta T = change in temperature = 19.35^oC

Now put all the given values in the above formula, we get:

q=3.640kJ/^oC\times (19.35)^oC

q=70.43kJ

Thus, the heat released by the combustion = 70.43 kJ

Now we have to calculate the molar enthalpy combustion.

\Delta H=-\frac{q}{n}

where,

\Delta H = molar enthalpy combustion = ?

q = heat released = 70.43 kJ

n = number of moles cymene = \frac{\text{Mass of cymene}}{\text{Molar mass of cymene}}=\frac{1.608g}{164.22g/mol}=0.009792mole

\Delta H=-\frac{70.43kJ}{0.009792mole}=-7193kJ/mole

Therefore, the thermal energy produced during the complete combustion of one mole of cymene is -7193 kJ/mole

4 0
3 years ago
URGENT PLEASSSEEE HELP
Vikki [24]

Answer:

0.4 * 10^-12 m

Explanation:

Frequency of the given Electromagnetic radiation is 7.50* 10^20 Hz

Speed of the electromagnetic radiation is 3*10^8 m/s

Hence wavelength is given by the formula: Speed/Frequency

Substituting the required values:

Wavelength = 3 * 10^8/7.50 * 10^20

=3/7.5 * 10^-12 = 0.4 * 10^-12 m

Hence the required wavelength of the electromagnetic radiation is 0.4*10^-12 m/s

6 0
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How many moles are in 5.025 grams of NaOH?
yKpoI14uk [10]

Answer:

The SI base unit for amount of substance is the mole. 1 grams NaOH is equal to 0.025001806380511 mole.

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Disadvantages of biodegradable plastics
natita [175]

1) The main disadvantage of bio plastics is that when they break down , carbondioxide is released and results into global warming.

2) They are designed to be composted , not recycled.

3) fewer proper composting availability.

4) plants grown for bioplastics have negative impacts of their own.

4 0
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