Hydrogen peroxide was catalytically decomposed and 75.3 mL of oxygen gas was collected over water at 25°C and 742 torr. What mass of oxygen was collec

0.0928 grams of oxygen was collected.

Explanation:

Volume of oxygen gas collected = V= 75.3 mL = 0.0753 L (1 mL = 0.001 L)

Temperature of the gas = T = 25°C = 25+ 273 k = 298 K

Pressure of the gas = P - = 742 Torr - 24 Torr = 718 Torr

1 atm = 760 Torr

Moles of oxygen gas = n

Using an ideal gas equation;

n = 0.0029 mol

Mass of 0.0029 moles of oxygen gas :

0.0029 mol × 32 g/mol = 0.0928 g

0.0928 grams of oxygen was collected.

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.