It is a solution, because it's the alloy of tin and copper
Answer:
A) 3.6 cm
Explanation:
Accuracy comes down to how precisely you can read the length on a given scale. Here since the smallest increment is centimeter, we can go only one decimal beyond to estimate. This is because you can usually estimate to only one decimal place beyond the closest marks on any measuring.
So, the answer should be 3.6 cm.
Here's a document that explains it well: https://www.auburn.wednet.edu/cms/lib03/WA01001938/Centricity/Domain/1360/1_Uncertainty.pdf
Hope that's right!
B
Explanation:
Burning is a chemical change and cutting grass is a physical change
The first basic metals on the periodic table are alkali metals.
The molar mass for PCL3 is 137.33 g/mol
