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inn [45]
3 years ago
7

Which of the following is a property of water? It can freeze very fast. It has low heat capacity. It exists in all three states

on Earth. It repels other water molecules.
Chemistry
2 answers:
Mariana [72]3 years ago
7 0

It exists in three states .

ycow [4]3 years ago
6 0

Answer: It exists in all three states on earth.

Explanation:

Water is a tasteless, colorless and odourless liquid. On earth it exists in three states namely solid, liquid and gas.

Water as solid: The water in solid state exists as ice. Ice is frozen water. The molecules of water remains separate in ice. It exists in the glaciers or snow in some cold regions.

Water as liquid: The water in the liquid form is the most common form exists on earth. It is in the fluid form of water. It can be seen in the form of river, lakes, ponds, and oceans.

Water as gas: Water when heated it converts into gas. The gaseous form of water is called as water vapor. The water vapors remain in the earth atmosphere responsible for causing rain.

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Answer:

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3 years ago
23 grams of sodium reacts with 293 cm 3 of water that is initially at 298 k. it produces an enthalpy change of 197 kj. what is t
m_a_m_a [10]

448 K is the final temperature of the water.

<h3>What is specific heat capacity?</h3>

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases by 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Given,

the mass of Na is 23 g

The volume of water = 293 cm3

Mass of water = 293 g

Total solution mass = 23 g + 293 g = 316 g

Specific heat capacity of water = 4.18 J/Kg

The equation relating mass, heat, specific heat capacity and temperature change is:

q = mcΔT

197 kJ = 316 g x 4.18 J/Kg x (T_{finals} - T_ {initial})

197 kJ = 316 g x 4.18 J/Kg x ( T_{finals}-298 K)

0.1491429956 x 1000 =  T_{finals}-298 K

149.1429956 + 298 = T_{finals}

447.1429956 = T_{finals}

448 K = T_{finals}

Hence, 448 K is the final temperature of the water.

<h3>What does a high specific heat capacity mean?</h3>

A high specific heat capacity means that it can store a large amount of thermal energy for a small change in mass or temperature.

Learn more about specific heat capacity here:

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