Answer:
There are 5 significant figures
Answer: a for the first one , d for the second one, b for the third one.
Explanation:
Answer:
c
Explanation:
neutrons have no charge
protons and electrons have opposite charges and balance each other out in equal numbers
SOLUTION :
Law of conservation of Mass States that "Mass is neither created, nor destroyed".
→ Like Mass of Reactants = Mass of products.
REACTANTS :
- Mass of Sodium Carbonate(given) = 5.3g
- Mass of ethanoic acid(given)= 6g
The total mass of reactants:
= 5.3 + 6
= 11.3g
<h3>•Products are :</h3>
- Mass of Carbon Dioxide = 2.2g
- Mass of Sodium ethanoate = 8.2g
The total mass of products is :
= 2.2 + 0.9 + 8.2
= 3.1 + 8.2
= 11.3g
Hence the, Mass of Reactants = Mass of products
∴ The given reaction is in agreement with the law of conservation.
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Answer:
3)Some gas molecules move further apart and some move closer together.
Explanation:
because When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. The particles exert more force on the interior volume of the container. This force is called pressure. There are several units used to express pressure.
