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tatuchka [14]
2 years ago
10

In a chemical change energy can be ___?

Chemistry
2 answers:
qaws [65]2 years ago
7 0

Answer:

chemical change energy can neither be created nor destroyed.

Explanation:

the rule of law of conversion states that energy can only be converted from said energy to another. it cannot be created and destroyed.

soldier1979 [14.2K]2 years ago
7 0

Answer:

D. Neither created nor destroyed

Explanation:

The law of conservation of energy states that energy is neither created nor destroyed.

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Which part of the human skeletal system is INCORRECTLY matched with its function?
stiks02 [169]
Hi the answer your looking for is C, muscle: bone to bone connection.
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8 0
4 years ago
When baking soda (sodium bicarbonate or sodium hydrogen carbonate, NaHCO3) is heated, it releases carbon dioxide gas, which is r
MariettaO [177]

Answer:

a. NaHCO₃ + HCl → NaCl + H₂O + CO₂

b. 39.14 g is the mass of NaHCO₃ required to produce 20.5 moles of CO₂

Explanation:

A possible reaction for NaHCO₃ to make dioxide is this one, when it reacts with hydrochloric to produce the mentioned gas.

NaHCO₃ + HCl → NaCl + H₂O + CO₂

Ratio in this reaction is 1:1

So 1 mol of baking soda, produce 1 mol of CO₂

Let's calculate the moles

20.5 g CO₂ / 44 g/m = 0.466 moles

This moles of gas came from the same moles of salt.

Molar mass baking soda = 84 g/m

Molar mass . moles = mass

84 g/m .  0.466 moles = 39.14 g

4 0
4 years ago
How many atoms of each element are in the chemical formula P2O5?
tigry1 [53]
<span>2 phosphorus and 5 oxygen</span>
4 0
3 years ago
Read 2 more answers
You will be adding a solution containing potassium carbonate to a solution containing hydrochloric acid. What risk is associated
Phantasy [73]

Explanation:

The reaction of potassium carbonate with hydrochloric acid is as follow -

Potassium Carbonate + Hydrochloric acid → Potassium Chloride + Water + Carbon Dioxide.

In the above reaction , the metal carbonate reacts with an acid to give salt , water and carbon dioxide .

The reaction is an exothermic reaction , as the release of carbon dioxide , is indicated by vigorous effervescence .

Hence ,

The temperature of the reaction increases a lot and hence the reaction is very dangerous .

Therefore , the reaction is very risky to perform.

7 0
3 years ago
Why is it important for scientists to keep testing a hypothesis even after they've found it to be true?
Alexus [3.1K]

Answer:

as the world is changing we change also

Explanation:

We must always check and recheck are a hypothesis

8 0
3 years ago
Read 2 more answers
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