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ladessa [460]
3 years ago
5

Why is it difficult to prove the Law of Conservation of Mass when a gas is produced?

Chemistry
1 answer:
Fofino [41]3 years ago
6 0

Answer:

It is difficult to prove the law of conservation of mass when a gas is produced because the gas molecules move quickly into the outside space and away

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Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→C
GREYUIT [131]

Answer:

m=8.79kg

Explanation:

First of all we need to calculate the heat that the water in the cooler is able to release:

Q=\rho * V*Cp*\Delta T

Where:

  • Cp is the mass heat capacity of water
  • V is the volume
  • \rho is the density

Q=1 g/cm^3 *15000 cm^3*4.184 \frac{J}{g*^{\circ}C}*(10-90)^{\circ}C

Q=-5020800 J=-5020.8 kJ

To calculate the mass of CO2 that sublimes:

-Q=\Delta H_{sub}*m

Knowing that the enthalpy of sublimation for the CO2 is: \Delta H_{sub}=571 kJ/kg

5020.8 kJ=571 kJ/kg*m

m=\frac{5020.8 kJ}{571 kJ/kg}=8.79kg

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3 years ago
Im the only metal who is a liquid at room temperature
mylen [45]
The only metal that is a liquid at room temperature is mercury!!
5 0
3 years ago
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Which is the larger quantity 1.0 km or 1.0 mi
Norma-Jean [14]

A mile.

For reference, it's about 1,607 or so meters, and 1km is 1,000.

4 0
3 years ago
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Rank the following particles, from largest to smallest in mass: alpha particle, beta particle, proton.
Len [333]
The best and most correct answer among the choices provided by your question is the fourth choice.

The correct arrangement of these particles from largest to smallest mass is: <span>proton, alpha particle, beta particle.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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Which statements about moon phases In a lunar month are true?
saveliy_v [14]

Answer:

1. The same pattern of phases repeats monthly

2. Waxing moon phases are visible between the new and full moon

6. A full moon appears toward the middle of a lunar month

Explanation:

Moon has eight phases which is used by the ancient people for the identification of date of the month. Phases of moon tells us about the starting, middle and end of the month. At the starting of the month, waxing crescent appears while at the middle of the month, the moon gains its full shape. Phases which occurs between new and full moon is known as waxing.

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