How hot would a 2.3 l balloon have to get to expand to a volume of 3.0 l? assume the initial temperature of the balloon is 24 °c, and that the pressure inside the balloon remains constant. a. 3 k b. 42 k c. 128 k d. 390 k

This question calls for Charles' Law (one of the gas laws) because it deals with volume and temperature of a gas. Charles' Law is as follows:
V₁/T₁ = V₂/T₂
Just plug in what you know! The initial volume and temperature (V₁ and T₁) are 2.3L and 24⁰C. The final volume (V₂) is 3.0L. Solve for T₂ algebraically:
2.3/24 = 3.0/T₂ *cross multiply here
2.3T₂ = 72
T₂ = 31.3⁰C
Now, convert to Kelvin by adding 273 to the temperature.
31.3 + 273 = 304.3K
The answer must be D because that is the only option where the balloon would reach at least 3.0L.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.