Answer:
Sound energy is the form of energy generated when an object vibrates. Once produced through vibrations, sound energy is transferred in waves through mediums such as air and water before it reaches your ears.
Answer:
this is true
Explanation:
because the sand is left behind for it isn't magnetic
1 - A balanced equation for the reaction is 3NH4ClO4 + 3Al -------> Al2O3 + AlCl3 + 6H2O + 3NO
2 - Ammonium perchlorate is the oxidizing agent while aluminum powder is the reducing agent.
Molar mass of aluminum oxide = 102 g/mol;
The molar mass of ammonium perchlorate =117.5 g/mol.
From the equation of reaction 3 moles of ammonium perchlorate react with 3 moles of aluminum to produce 1 mole of aluminum oxide.
That is 3 x 7.5 g of ammonium perchlorate reacts with g of aluminum to produce 102 g/mol of aluminum oxide. Also 150g.
150 g of ammonium perchlorate produces (150 * 102)/(3*117.5) g of aluminum oxide = 43.4 g of aluminum oxide.
If you need to learn more about the balanced equation, click here;
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Answer:
ice caps and glaciers
Explanation:
Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps.
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