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Rama09 [41]
3 years ago
12

1.) Consider the processes or reactions, indicate which side of the reaction will have the greatest entropy AND explain why. (4

pts) a. CO2 (s)CO2 (g) b. CaCO3 (s)-) Cao (s) + CO2 (g) c. 2 NO2 (g) -> N204 (g) d. H20 (1) at 25 °C heated to 52 °C
Chemistry
1 answer:
ratelena [41]3 years ago
6 0

Answer:

A. Right side since CO2 has has more entropy than solid CO2

B. Right side since gaseous CO2 is present on right side

C. Left side since more no of gaseous molecules om left side

D. Right side since on heating of water at 52C starts boiling hence more entropy for vapour.

Explanation:

Generally entropy is the measurement of randomness and follows the order gas>liquid>solid

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How many atoms are in 12 moles of I. Check your significant figures.
ELEN [110]

Explanation:

7.2×1024 moleas

please mark as brilliant

5 0
2 years ago
Molten gallium reacts with arsenic to form the semiconductor, gallium arsenide, GaAs, used in light-emitting diodes and solar ce
Vsevolod [243]

Answer:

a) 1.2g of arsenic b) 0.64g of arsenic c) 3.481g of gallium d) 3.806g of gallium e) 2.61g arsenic

Explanation:

The balanced equation is:

Ga + As = GaAs, 1:1 mole ratio

a) mass (gallium)/ molar mass of Ga = 4/ 69.723 = 0.0574mol

Mass (arsenic)/ molar mass of As = 5.5/74.9216 = 0.0734, subtracting the moles from each other (knowing already that the ratio is 1:1), arsenic is in excess by 1.2g

b) repeating the procedure (changing the values)

It will be 0.0574 to 0.06593

Arsenic is in excess by 0.00854

0.00854* mass of arsenic (such must be done for the first remaining mole) = 0.64g

c) the mole ratio is 0.0574: 0.00747

Gallium is in excess by 0.05

Mass of excess gallium = 0.05* 69.723 = 3.481g

d) using the mass given, the new ratio is

0.128: 0.0734

Gallium is in excess by 0.054mol

Mass of excess gallium = 0.054*69.723 = 3.806g

e) using the mass again, the new ratio is 0.0574: 0.02,

Gallium is in excess by 0.0374*69.723 = 2.61g

7 0
3 years ago
A sample of hydrogen gas collected over water occupied 30.0 mL at 24 °C on a day when the atmospheric pressure was 736 Torr. Wha
givi [52]

Answer:0.026ml

Explanation:

Details are found in the image attached. We must subtract the saturated vapour pressure of hydrogen gas at the given temperature from the total pressure of the hydrogen gas collected over water to obtain the actual pressure of hydrogen gas and substitute the value obtained into the general gas equation. The dry hydrogen gas has no saturated vapour pressure hence the value is substituted as given. All temperatures must be converted to Kelvin before substitution.

4 0
3 years ago
Find the pH of HCl with a concentration of 0.00006M<br> Round to the nearest whole number
Tpy6a [65]

Answer:

4.22

Explanation:

pH stands for potential hydrogen. The letter “p” denotes potential and the letter “H” denotes hydrogen.

pH helps to find the acidity or alkalinity of an aqueous solution.

The number of hydrogen ions (protons) present in a solution is determined by the pH scale.

A pH greater than 7 makes the water more alkaline and a pH less than 7 makes the water more acidic.

pH=-\log [H^+]=-\log [0.00006]=4.22

4 0
3 years ago
Water is always subject to the law of
dimulka [17.4K]

Answer:

motion

Explanation:

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5 0
3 years ago
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