Plantae, as trees and flowers are examples of plants.
A. combustion
because carbon dioxide is the main product of burning carbon based fuels and combustion is the process of burning something
Answer:
Accuracy decreases
Explanation:
All meaurements have an uncertainty (That is, the error of the measurement). The uncertainty of graduated cylinders is higher than uncertainty of pipets.
The accuracy is how close is the measurement to the real value.
If you use graduated cylinders rather than pipets, <em>accuracy decreases </em>because you will have more uncertainty in the measurements putting of the real value and the real value.
First, you must find the number of moles of copper that your sample has. This is calculated by #of moles= your sample mass (in grams)/ atomic mass (in grams)
#of moles=19g/18.998g
#of moles= 1.0 moles present
Then to find the number of atoms present, we must multiply the number of moles present in the sample with Avogadro's number, which is 6.022x10^23 (this number is the number of atoms present in each mole)
# of atoms present in copper sample=1.0(6.022x10^23)
#of atoms present in copper sample= 6.022x10^23