Given:
62% of the residents visit Comet Mall.
73% of the residents visit Star Mall.
48% of the residents visit both malls.
To find:
The probability that a resident chosen at random shops at either Comet Mall or at Star Mall.
Solution:
Let A be the event that the residents visit Comet Mall and B be the event that residents visit Star Mall. Then, we have
We need to find the probability that a resident chosen at random shops at either Comet Mall or at Star Mall. It means, we have to find the value of 
.
We know that,
On substituting the given values, we get
Therefore, the probability that a resident chosen at random shops at either Comet Mall or at Star Mall is 87%.
Answer:
Sulfuric Acid Droplets
Explanation:
"Venusian clouds are thick and are composed mainly (75–96%) of sulfuric acid droplets. These clouds obscure the surface of Venus from optical imaging, and reflect about 75% of the sunlight that falls on them.
Carbon dioxide: 96.5 %
Sulfur dioxide: 150 ppm
Water vapor: 20 ppm
Carbon monoxide: 17 ppm" by the Wikipedia
Below is the solution:
n equation showing conservation of mass of reactants and products:
<span>2H2O --> 2H2 & O2 </span>
<span>what is the mass of the oxygen gas produced, from 178.8 g H2O , (using molar masses: </span>
<span>178.8 g H2O @ (1mol O2)(@ 32.00 g/mol) / (2molH2O)(18.02g/mol) = </span>
<span>your answer (4 sigfigs): 158.8 g O2 </span>
<span>178.8 g H2O ---> 20.0 H2 & 158.8 O2</span>
