Gas
The vapor density of carbon monoxide is 14.0 g/L at standard temperature and pressure (STP). This means that carbon monoxide is slightly lighter than air, which has a vapor density of 28.97 g/L at STP.
At standard temperature and pressure (STP), carbon is a solid while hydrogen is a gas. Carbon exists as a solid in various allotropes such as graphite and diamond, whereas hydrogen is a diatomic gas at STP.
Using the ideal gas law - the volume of a gas is independent of it composition and is determined solely by the equation PV=nRT. As one mole of CO would produce one mole of CO2 it would take 541 mL of CO to produce 541 mL of CO2.
To calculate the grams of carbon needed, we first need to find the number of moles of carbon dioxide produced. Since 1 mole of gas at STP occupies 22.4 L, 2.21 L of CO2 is 2.21/22.4 moles. Since the balanced chemical equation for the combustion of carbon is 1 mol C to 1 mol CO2, the same number of moles of carbon is needed. Therefore, the grams of carbon needed would be the molar mass of carbon (12 g/mol) times 2.21/22.4 moles of carbon dioxide.
At STP (standard temperature and pressure), it is a diatomic gas, Cl2.
At standard temperature and pressure (STP), carbon is a solid, so it would be denser than air at STP.
Under STP (standard temperature and pressure), carbon is a crystalline solid.
Gas at STP.
tasteless, colorless, non-combustable, gas (at STP)
The vapor density of carbon monoxide is 14.0 g/L at standard temperature and pressure (STP). This means that carbon monoxide is slightly lighter than air, which has a vapor density of 28.97 g/L at STP.
iodine
At STP neon is a gas.
Gas
Helium exists as a gas at STP
Helium is a gas at STP.
gas at STP
If you have frozen something it is a solid, regardless of its state at STP.