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8_murik_8 [283]
2 years ago
10

When a warm soda can is placed in an ice chest full of ice, the soda can _______ heat and the ice _______ heat until they are bo

th the same temperature. A. shares; holds B. holds; shares C. gains; loses D. loses; gains
Chemistry
1 answer:
Svetach [21]2 years ago
5 0
D because as the soda can starts to cool off the ice in turn begins to melt because the heat from the soda is being distributed on the ice and vice versa.
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Answer:

tensile strength, elongation, flexural strength, and impact resistance.

Explanation:

3 0
2 years ago
How much heat is transferred in the process of completely melting a 1.6kg block of ice starting at -15 degrees Celsius? Is this
mixas84 [53]

Answer:

  • a) Heat = 590 kJ

  • b) Endothermic

Explanation:

<em>Endothermi</em>c processes absorb energy. The final state contains more energy than the initial state.

Since ice absorbs heat energy <em>in the process of completely melting</em> this is an <em>endothermic</em> process.

The process involves two stages: 1) heating the ice up to the melting point, which is 0ºC, and 2) melting the ice.

1. Heating the ice from -15ºC to 0ºC

a) Formula: Q = m×C×ΔT

  • m = 1.6 kg
  • C = 2.108 kJ/kg.ºC (specific heat of ice)
  • ΔT = 15ºC

b) Calculations:

  • Q = m×C×ΔT = 1.6 kg × 2.108 kJ/kg.ºC  × 15ºC = 50.592 kJ

2. Melting the ice at 0ºC

a) Formula:  L = m × ΔHf

  • m = 1.6 kg
  • ΔHf = 334 kJ/kg (latent heat of fussion)

b) Calculations

  •    L = m × ΔHf = 1.6 kg × 334 kJ/kg = 534.40 kJ

<u />

<u>2. Total heat</u>

<u />

  • 50.592 kJ + 534.40 kJ = 584.992 kJ ≈ 590 kJ (rounded to 2 significant figures)
4 0
3 years ago
Propose the structure of the following HNMR data.
Varvara68 [4.7K]

Answer:

1-Chloropropane is likely the answer (attached a picture)

Explanation:

First off there are 3 peaks and 3 carbons which indicates to me that this will be a chain without any symmetry and that each carbon has hydrogens on it.  

Second the triplet at 1.0 that integrates to 3 likely correlates to a CH3 (methyl) group.  Peaks are very upfield triplets that integrate to three are almost always methyl peaks.

Third the triplet at 3.7 is indicative of being next to the halogen.  Hydrocarbons by themselves do not have peaks that far downfield meaning that its shift could only be explained by the chlorine being involved.  Also we know that this can't be next to the methyl group since its multiplicity is to low to be next to it.  

That leaves the multiplet at 1.75 being the hydrogens on the middle carbon which also makes sense since it is more downfield then the methyl group (due to being closer to the chlorine) but is not far enough downfield to say the chlorine is there.  It also makes sense that it is a multiple since it would be a hextet due to the adjacent 5 hydrogens which can't always be resolved.

I hope this helps and let me know if anything is unclear or needs further explanation.

7 0
2 years ago
The forces between water molecules are stronger than the forces between ethanol molecules. Which liquid would probably be most d
WITCHER [35]
<span>An insect would have an easier time walking on the surface of water than on the surface of ethanol. Water's stronger intermolecular forces lead to higher surface tension. Higher surface tension allows water to support the insect. I hope this helps.</span>
4 0
3 years ago
Read 2 more answers
HCl + Fe + ____ + H²
mezya [45]

Answer:

This is a correct answer. 2HCL + Fe = FeCl2 + H2

8 0
1 year ago
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