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KIM [24]
3 years ago
13

Why is ice less dense than liquid water?

Chemistry
2 answers:
podryga [215]3 years ago
8 0
Hey there,

Your question states: Why is ice less dense than liquid water?
There reason why Ice is less dense than liquid is because ice has compact molecules that are tight together and they stay still. But as for water, those molecules are lose and they are more free than ice.

Hope this helps.
~Jurgen
rosijanka [135]3 years ago
6 0

The answer is: Ice expands (volume is increasing) when it freezes, because of hydrogen bonds.

When molecule frezes, it lose energy. When molecules are far apart, it means the volume is greater and it expands.

For example, ice expands when water is freezing.

Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

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Which describes colloids? Check all that apply.
nirvana33 [79]

Answer:

In chemistry, a colloid is a mixture in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance. ... Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid.

Credit to: Colloid - Wikipedia

https://en.wikipedia.org › wiki › Colloid

Explanation:

4 0
4 years ago
2. What mass of sodium chloride is produced when chlorine gas reacts with 2.29 grams of sodium iodide? The unbalanced equation i
Damm [24]

Answer:

0.88g

Explanation:

The reaction equation:

         2NaI  + Cl₂   →    2NaCl  + I₂

Given parameters:

Mass of Sodium iodide = 2.29g

Unknown:

Mass of NaCl = ?

Solution:

To solve this problem, we work from the known to the unknown.

First find the number of NaI from the mass given;

   Number of moles  = \frac{mass}{molar mass}  

          Molar mass of NaI  = 23 + 126.9  = 149.9g/mol

 Now insert the parameters and solve;

     Number of moles  = \frac{2.29}{149.9}   = 0.015mol

So;

 From the balanced reaction equation;

            2 moles of NaI produced 2 moles of NaCl

          0.015mole of NaI will produce 0.015mole of NaCl

Therefore;

      Mass  = number of moles x molar mass

      Molar mass of NaCl = 23 + 35.5  = 58.5g/mol

Now;

      Mass of NaCl  = 0.015 x 58.5  = 0.88g

8 0
3 years ago
Describe how electricity moves through wires
agasfer [191]
The particles that carry charge through wires in a circuit are mobile electrons. The electric field direction within a circuit is by definition the direction that positive test charges are pushed. Thus, these negatively charged electrons move in the direction opposite the electric field.
8 0
3 years ago
What is the relationship between temperature and reaction rate?​
Alecsey [184]

Explanation:

Temperature has a direct relationship with reaction rate. The higher the temperature the faster the rate of reaction of a system.

  • For every 10°C rise in temperature above the room temperature, it has been found that reaction rates becomes double or triple.
  • When the temperature of a reacting system increases, the kinetic energy of each of the reacting particles increases.
  • The frequency of collision and effective collision also increases per unit of time.
  • Many of the reacting particles will acquire an energy greater than or equal to the activation energy of the reaction.
6 0
3 years ago
Which value is most likely to be the pH of a salt that is formed by the reaction of a strong acid and a weak base?
alekssr [168]

Answer:

7.0 the correct answer is to be less than 7.0

6 0
4 years ago
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