Answer:
methane + oxygen → carbon dioxide + water
Explanation:
methane + oxygen → carbon dioxide + water methane + oxygen → carbon dioxide + water methane + oxygen → carbon dioxide + water
Answer:
Their energes can have any values
Explanation:
Answer:
2.5 meter per second
Explanation:
momentum = mass multiplied by velocity
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Substance combines with another to form a new substance is a chemical change
Answer:
True
Explanation:
Elemental gold is a pure substance (if it is 24 carat). Gold used in jewelry is a mixture with such other metals as copper and nickel. Pure gold is rather soft, so it is mixed (alloyed) with other metals.