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3 years ago

Is burning a phase change? Just a yes or no answer i don't need a whole copy and paste

Chemistry

2 answers:

Sladkaya [172]3 years ago

8 0

Answer:

Explanation:

coldgirl [10]3 years ago

6 0

Thoughts: Well a phase change would be like changing to a solid, liquid, gas or maybe plasma. (ALSO) Melting, vaporation etc. You can burn a frozen solid ice cube and it will change to a liquid aka (<em>melted</em>)

Draft Answer: Going by that scenerio I would say yes but burning can also burn a paper into nothing except ashes while like I said with the ice cube also works.

Final Answer: Yes!!

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Choose ALL the answers that apply.

zaharov [31]

Answer: absorbs food, breaks down food

5 0

3 years ago

Write the net ionic equation for this precipitation reaction. Include physical states. ( NH 4 ) 2 CO 3 ( aq ) + Ca ( ClO 4 ) 2 (

Bad White [126]

Answer:

The net ionic equation:

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

Explanation:

The given chemical reaction is as follows.

$(NH_{4})_{2}CO_{3}(aq)+Ca(ClO_{4})_{2}(aq) \rightarrow CaCO_{3}(s)+2NH_{4}ClO_{4}(aq)$

The total ionic equation is as follows.

$2NH_{4}^{+}(aq)+ CO_{3}^{2-}(aq)+Ca^{2+}(aq)+2ClO_{4}^{-}(aq) \rightarrow CaCO_{3}(s)+2NH_{4}^{+}(aq)+2ClO_{4}^{-}$

Similar ions on the both sides of the reaction will be cancelled.

The remaining reaction is

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

Therefore, the net ionic reaction is as follows.

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

8 0

4 years ago

A water strider (water bug) is able to walk on water because of water’s...

Gre4nikov [31]

Answer:

Surface tension

Explanation:

A water strider (water bug) is able to walk on water because of water’s Surface tension.

Surface tension is phenomenon in which in liquid where it shrinks itself to its minimum surface area possible, it is very much visible in water surface because of high attraction between the water molecule.

5 0

3 years ago

Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation?

Gnesinka [82]

Answer: Option (b) is the correct answer.

Explanation:

According to ideal gas law, the product of pressure and volume is equal to the product of number of moles, gas constant and temperature.

Mathematically, PV = nRT

So, when there are two gases with equal number of moles behaving ideally then the ideal gas equation will be as follows.

$\frac{P_{1}V_{1}}{T_{1}}$ = $\frac{P_{2}V_{2}}{T_{2}}$

and $\frac{V_{1}}{V_{2}}$ = $\frac{P_{2}T_{1}}{P_{1}T_{2}}$

Hence, when temperature and pressure of both the gases will be constant then $\frac{V_{1}}{V_{2}}$ = 1.

Thus, we can conclude that constant temperature and pressure is the conditions that must be met for a volume ratio to be created from a balanced chemical equation.

4 0

3 years ago

Read 2 more answers

What is the limiting reactant in a chemical reaction?

EastWind [94]

A. The reactants that run out first
Easy!

5 0

3 years ago