Question

the density of gas is 1.43 grams or litres at STP at what temperature is density is halved of pressure remains the same​

Answer 1

Answer:

So instead of 1.43 g/mol , you should have 1.43 g/L , i.e. 1 L of this gas has a mass of 1.43 g at STP conditions. Now, you were probably taught that 1 mole of any ideal gas occupies 22.4 L at STP conditions, which back in the day were defined as a temperature of 0∘C and a pressure of 1 atm .

Hope it's Right.