Number of moles of Cu in 63.546 g is 1 mole
1 / 63.546 = 0.0157366317
Number of moles in 1 g of Cu is 0.0157366317
0.0157366317 x 0.1431
0.002251912 moles will be the answer
According to law of conservation of matter and energy, amount of both of them will remain same
Answer:
9000 BC
Explanation:
Although various copper tools and decorative items dating back as early as 9000 BCE have been discovered, archaeological evidence suggests that it was the early Mesopotamians who, around 5000 to 6000 years ago, were the first to fully harness the ability to extract and work with copper.
Answer:
80cm3 of water, and 60cm3 carbon IV oxide is formed while 20cm3 of oxygen is left unreacted.
Explanation:
From Gay-Lussac's law, there are five volumes of oxygen, 1 volume if propane, 4 volumes of water and three volumes of CO2. Applying this shows the reacting volumes as we have in the image attached, hence the volumes left after reaction.
The original options for this question were cleavage, luster and hardness. The answer would be cleavage.
