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blondinia [14]
3 years ago
10

Density involves the amount of a material in a certain volume. When a material changes phases, it changes in density in a predic

table way as the amount of material stays the same but the molecules get farther apart or closer together. Water has solid and liquid states that do not follow these predictions of density in the phases of matter. What does that mean about the densities of the phases of water? The solid state is the most dense, followed by the liquid state, then the gas state. The solid state is more dense than the liquid state. The liquid state is more dense than the solid state. The gas state is the most dense, followed by the liquid state, then the solid state.
Chemistry
2 answers:
lisabon 2012 [21]3 years ago
5 0

Answer:

IT is c

Explanation:

Margaret [11]3 years ago
5 0

Answer:

im so tired of coming to look at the comments on this and there still being an answer button

Explanation:

thanks love u

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Which clue can be used to identify a chemical reaction as a decomposition reaction?
sergij07 [2.7K]

Answer:

The reaction has a single reactant

Explanation:

Decomposition reaction is a reaction in which an insoluble single compound is heated at a high temperature and decomposes into several products.

Typically, we may see decomposition of calcium carbonate producing calcium oxide and carbon dioxide, this is represented by the following reaction:

CaCO_3 (s)\rightarrow CaO (s) + CO_2 (g)

Another example would be decomposition of ammonium nitrite. Ammonium nitrite would decompose into nitrogen and water:

NH_4NO_2 (s)\rightarrow N_2 (g) + 2 H_2O (l)

Notice that the two examples above share something in common: the two decomposition reactions have a single reactant.

4 0
4 years ago
Read 2 more answers
Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing
UkoKoshka [18]

<u>Answer:</u> 1.2 moles of carbon dioxide is produced for the given value of oxygen.

<u>Explanation:</u>

The chemical reaction for the combustion of acetylene follows the equation:

2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

By stoichiometry of the reaction:

5 moles of oxygen produces 4 moles of carbon dioxide.

So, 1.5 moles of oxygen will produce = \frac{4}{5}\times 1.5=1.2mol of carbon dioxide.

Hence, 1.2 moles of carbon dioxide is produced for the given value of oxygen.

4 0
4 years ago
The process by which ice widens and deepends cracks in rock is called
sertanlavr [38]
The process by which ice widens and deepens cracks in rock is called Ice welding. 
6 0
3 years ago
Which statement gives a reason why scientist think that the universe began with an explosion
yaroslaw [1]

I believe the answer is

At the moment it is the best way of explaining our scientific knowledge.


8 0
3 years ago
Most tornadoes carry wind speeds that range from
gtnhenbr [62]
In the categorization of tornadoes, most tornadoes (87%) are no stronger than EF1 unless 'most' is considered 55% in which case the answer is EF0. 
EF0 - 65 to 85 mph {104.61 to 136.79 km/h}EF1 - 86 to 110 mph {138.40 km/h to 177 km/h}
Hence the answer would have to be C
6 0
3 years ago
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