This is true, depending on the color, there should be a chart where you can compare the color of the litmus paper (dipped in acid/base) to figure out how basic or acidic it is
Density = Mass / Volume
Density = 2.0g / 5.0ml
Density = 0.4 g/ml
(3) HF. The strength of hydrogen bonding between molecules depends on the difference in the electronegativities of each atom in the molecule. Since fluorine is the most electronegative element, HF has the strongest hydrogen bonding.
The molar mass of O2 is 32g/mol. So the mol amount of these O2 is 56/32=2 mol. STP stands for the standard temperature and pressure which means the temperature is 0 ℃ and pressure is 100 kPa. And the molar volume of gas is 22.7 L/mol under STP. So the answer is 22.7*2=45.4 L
