Answer:
This was important because it supported the concept of discovery of new elements
Explanation:
Mendleev left gaps in his table not discovered at that time, but he predicted the properties (chemical and physical) of undiscovered elements. Mendeleev left the gap next to silicon and named the undiscovered element as 'eka-silicon', the element germanium was discovered later.
<span>2 H</span>₂<span> + O</span>₂<span> = 2 H</span>₂<span>O
4 g H</span>₂ ------------ 32 g O₂----------- 36 g H₂O
<span> 8 g H</span>₂ ------------ 64 g O₂------------ ? g H₂O
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Mass of H</span>₂O :
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64 * 36 / 32 =
2304 / 32 = 72 g of H</span>₂O
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hope this helps!
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Answer:
The independent variable is the type of material
The dependent variable is the thermal energy transferred by that material
Explanation:
The type of material is independent of the heat flowing through it. While the thermal energy transferred is surely dependent on the material through which it transfers.
Answer: It is chemical energy, which is a type of potential energy.
Explanation: Natural gas consists of mixture of hydrocarbons such as methane, butane and others which are chemical substances, thus they contain chemical energy stored in the bonds of the molecules.
Potential energy is any form of energy that has stored potential that can be used later. Examples include nuclear energy, chemical energy, etc.
Thus the type of energy present in natural gas is chemical energy, which is a type of potential energy.