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katovenus [111]
2 years ago
14

The reason it takes so much heat to melt ice or evaporate water is that extra energy is required to break _______ bonds between

water molecules.
Chemistry
1 answer:
mart [117]2 years ago
4 0

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

<h3>Hydrogen bond</h3>

Hydrogen bonding is an electrostatic force of attraction between a hydrogen atom found between a pair of other atoms having a high affinity for electrons.

Hydrogen bonds cause water to be exceptionally attracted to each other creating cohesion.

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

Find out more on Hydrogen bond at: brainly.com/question/12798212

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_____ might be able to detect tumors based on its use of X-rays and ability to produce cross-sectional images of the brain.
MatroZZZ [7]

Answer: CAT (computerized axial tomography) scan

Explanation:

Computerized Axial Tomography (CAT) scan is an X-ray examination in which a computer generates images showing cross-section views of a patient's internal parts (brain, blood vessels and etc.)

CAT scan can identify normality and detect abnormalities (such as tumor and degenerated cells) in the internal organs and structures and hence, this information are used to guide other medical processes.

6 0
3 years ago
Calculate the mass percent for all components in a solution containing the following. 0.350 Kg of water, 5.4 moles of ammonia an
Alina [70]

Answer:

  • % Water = 54.96%
  • % Ammonia = 0.14%
  • % Cobalt (II) Nitrate = 30.62%

Explanation:

To calculate mass percent, first we need to <u>calculate the total mass of the mixture</u>:

  • Mass Water ⇒ 0.350 kg Water = 350 g water
  • Mass Ammonia⇒We use ammonia's molar mass⇒5.4 mol * 17 g/mol =  91.8 g
  • Mass cobalt (II) nitrate ⇒ 195.0 g

Total Mass = Mass Water + Mass Ammonia + Mass Cobalt Nitrate

  • Total Mass = 350 g+ 91.8 g+ 195 g = 636.8 g

To calculate each component's mass percent, we divide its mass by the total mass and multiply by 100:

  • % Water ⇒ 350/636.8 * 100% = 54.96%
  • % Ammonia ⇒ 91.8/636.8 * 100% = 0.14%
  • % Cobalt (II) Nitrate ⇒ 195/636.8 * 100% = 30.62%
8 0
3 years ago
I WILL GIVE 50 POINTS AND BRAINLIEST TO WHO EVER ANSWERS THIS RIGHT AND FAST!!! PLS!!!!
poizon [28]

The answer is D

I took the test and I got this answer, it was correct :)

I don’t care if I get brainliest I just want to help

4 0
3 years ago
Read 2 more answers
Do gases have mass and weight?​
slega [8]

Answer:

yes

Explanation:

they di because they have mass and wait

7 0
3 years ago
Unbalanced forces can cause an object change its motion in three ways. What are they?
fenix001 [56]
Accelerate, decelerate, and changing directions.
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