Answer:
Land covers refer to all the manufactured structures and vegetation that covers the land it includes all vegetation including plants, shrubs, trees, and other man-made structures too.
On other hand, Land use is the term that explains the use of the land by the different human activities that are occurred on land that are directly related to the land.
Land cover influences land use by utilizing particular land such as parks, ponds, or other uses according to the land. and humans can cause changes in both when they urbanize the area or land.
Corrected question:
Bromine-88 is radioactive and has a half life of 16.3seconds. What percentage of a sample would be left after 35seconds? Round your answer to 2 significant digits.
Answer:
23% (3 significant digits)
Explanation:
where 
is mass remaining
is original mass
t1/2= 16.3s , t=35s
n =35/16.3 =2.147
= 
0.2258*100% =22.5%
≈23%
Answer:
Ca - 63.546 g
2N - 28.014 g
2O3 - 96 g
Ca(NO3)2 = 187.56 g
187.56 g x 0.75 mol = 140.67 g
Explanation:
Hope this helps
Answer:
The answer to your question is given below.
Explanation:
1. CH3COOH(aq) + NaHCO3(s) —> CO2(g) + H2O(l) + Na+(aq) + CH3COO-(aq)
The above equation is balanced since the number of atoms of the different elements present on both sides of the equation are equal.
2. CaCl2 + NaHCO3 —> CO2 + CaCO3 + NaCl + H2O
The above equation can be balance as follow:
There are 2 atoms of Cl on the left side and 1 atom on the right side. It can be balance by putting 2 in front of NaCl as shown below:
CaCl2 + NaHCO3 —> CO2 + CaCO3 + 2NaCl + H2O
Now, there are 2 atoms of Na on the right side and 1 atom on the left side. It can be balance by putting 2 in front of NaHCO3 as shown below:
CaCl2 + 2NaHCO3 —> CO2 + CaCO3 + 2NaCl + H2O
Now the equation is balanced.
