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3 years ago

Which of the following has the smallest heat capacity?

Chemistry

2 answers:

musickatia [10]3 years ago

7 0

What are the options?

padilas [110]3 years ago

3 0

Answer: 3.0 g Pb

Explanation:

Got it right on edg

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A 80.0 g piece of metal at 88.0°C is placed in 125 g of water at 20.0°C contained in a calorimeter. The metal and water come to

grandymaker [24]

Answer:

The specific heat of the metal is 0.485 J/g°C

Explanation:

Step 1: Data given

Mass of the piece of metal = 80.0 grams

Mass of the water = 125 grams

Initial temperature of the metal = 88.0 °C

Initial temperature of water =20.0 °C

Final temperature = 24.7 °C

pecific heat of water is 4.18 J/g*°C

Step 2: Calculate specific heat of the metal

Qgained = -Qlost

Q =m*c*ΔT

Qwater = - Qmetal

m(water)*c(water)*ΔT(water) = -m(metal)*c(metal)*ΔT(metal)

with mass of water = 125 grams

with c( water) = 4.18 J/g°C

with ΔT(water) = T2-T1 = 24.7 - 20 = 4.7°C

with mass of metal = 80.0 grams

with c(metal) = TO BE DETERMINED

with ΔT(metal) = 24.7 - 88.0 = -63.3 °C

125*4.18*4.7 = -80 * C(metal) * -63.3

2455.75 = -80 * C(metal) * -63.3

C(metal) = 2455.75 / (-80*-63.3)

C(metal) = 0.485 J/g°C

The specific heat of the metal is 0.485 J/g°C

3 0

3 years ago

If someone takes a material that looks pure, and then they do something to it that results

Sati [7]

Answer:

The determination of the nature of the combination of the two separate materials in the original material that looks pure is based on the characteristic of the change process they undergo to become two separate materials.

Therefore, they can know if they initially had a mixture or a compound by the following steps;

1) If the two separated materials can be easily remixed to form the original material, then they likely have a mixture of the two separate materials

2) If the process that results in the formation of the two separate materials, involves the absorption or evolves heat or other forms of energy, then the original substance was a compound

3) If the two newly formed materials is seen to be a permanent change, then the original material was a compound

Explanation:

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3 years ago

What are the building block of lipids?

Novosadov [1.4K]

fatty acids

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

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3 years ago

What is the mass of 25 mL of rubbing alcohol?

Oduvanchick [21]

Answer:

the answer is 0.785g/ mL

5 0

3 years ago

Which of the following statements is TRUE? Which of the following statements is TRUE? Electrons placed in antibonding orbitals s

marusya05 [52]

Answer:

When two atomic orbitals come together to form two molecular orbitals, one molecular orbital will be lower in energy than the two separate atomic orbitals and one molecular orbital will be higher in energy than the separate atomic orbitals.

Explanation:

Which of the following statements is TRUE?

Electrons placed in antibonding orbitals stabilize the ion/molecule. FALSE. Electrons in the antibonding orbitals destabilize the ion/molecule.

The total number of molecular orbitals formed doesn't always equal the number of atomic orbitals in the set. FALSE. The total number of molecular orbitals is always equal to the number of atomic orbitals in the set.

When two atomic orbitals come together to form two molecular orbitals, one molecular orbital will be lower in energy than the two separate atomic orbitals and one molecular orbital will be higher in energy than the separate atomic orbitals. TRUE. The orbital with lower energy will be the bonding orbital and the one with higher energy will be the antibonding orbital.

A bond order of 0 represents a stable chemical bond. FALSE. A chemical bond is stable if the bond order is higher than zero.

5 0

3 years ago