Answer:
$99.99
Explanation:
Given parameters:
Cost of gold per ounce = $323.12
weight of gold in the lab = 8.7739g
Solution
We need to first convert the mass of the weighed gold into ounces from grams:
1 gram = 0.03527oz
8.7739g = 8.7739 x 0.03527; 0.31oz
Since 1oz of gold is $323.12
0.31oz of gold will be 0.31 x 323.12 = $99.99
Ozone can be formed when a mixture of O2 and NO2 is exposed to bright light. Such mixtures occur in the polluted air of large cities. The concentration of NO2 in air is usually very low, because N2 and O2 do not react at normal temperatures. However, in the hot, reacting gases inside the cylinders of internal combustion engines, nitrogen and oxygen can react.
The final step in a typical titration, that is here an acid base one would be to finally find the concentration of your unknown substance whether that be the acid or the base. The other steps are used before this to come to the correct calculation and conclusion.
Answer:
The solubility of the salt is
46.75g salt/100g of H2O
Explanation:
If 7.70g of water can dissolve 3.60g at 21°C
That is 1.0g of water can dissolve (3.6÷7.7) grams of salt, that is 0.4675_g of salt at 21°C or 100 grams of water can dissolve 100×0.4675 = 46.75g
The solubility of the salt is
46.75g salt/100g of H2O