Yes, butane is lighter than air. Butane is a gas that is less dense than air, which means it will rise and disperse in the atmosphere. This property makes butane highly flammable and a common choice for use in lighters. **

Butane itself is not deadly in small amounts, as it is commonly used as a fuel in lighters. However, inhaling large amounts of butane gas can be harmful and even fatal. Inhaling butane can cause dizziness, nausea, vomiting, asphyxiation, and in severe cases, can lead to cardiac arrest. It is important to use lighters in a well-ventilated area and avoid inhaling the gas directly. **

Yes, butane gas is lighter than air. Butane has a density of 2.48 kg/m³, while air has a density of 1.225 kg/m³. This means that butane gas will rise and disperse in the air rather than sink. This property makes butane a suitable fuel for lighters and portable stoves, as it easily evaporates and mixes with the surrounding air. **

No, lighter fluid and butane gas are not the same. Lighter fluid is a liquid fuel typically made from petroleum distillates, while butane gas is a flammable gas that is commonly used as a fuel for lighters and camping stoves. They have different chemical compositions and physical states, with lighter fluid being a liquid and butane gas being a gas at room temperature. Therefore, they are not interchangeable and should not be used interchangeably. **

The main difference between a regular gas lighter and a butane gas lighter is the type of fuel they use. Regular gas lighters typically use a mixture of butane and propane, while butane gas lighters use only butane as their fuel source. Butane gas lighters are often considered to be more efficient and reliable, as butane burns cleaner and hotter than the mixture of butane and propane used in regular gas lighters. Additionally, butane gas lighters are often refillable, allowing for multiple uses, while regular gas lighters are often disposable. **

Inhaling small amounts of propane-butane gas from an overfilled lighter for a few seconds is unlikely to cause serious harm. However, inhaling larger amounts of these gases can lead to symptoms such as dizziness, nausea, and headaches. It is important to ensure proper ventilation if accidentally exposed to these gases and seek fresh air immediately. If symptoms persist or worsen, it is advisable to seek medical attention. **

Iso-butane and butane have different boiling points because of their molecular structures. Iso-butane has a branched structure, which allows its molecules to pack more closely together, resulting in stronger intermolecular forces. This makes it more difficult to overcome these forces and reach the boiling point compared to butane, which has a linear structure with weaker intermolecular forces. As a result, iso-butane has a higher boiling point than butane. **

The reaction equation for butane combustion is: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O. This equation shows that when butane (C4H10) reacts with oxygen (O2), it produces carbon dioxide (CO2) and water (H2O) as the products. **