How many moles of methane gas are present in 425 L of the gas? Round answer to 3 significant figures.

No. of moles of methane = 18.9 mol

Explanation:

No. of moles = Volume of gas / Volume of gas (at STP)

Volume of gas at STP (Standard Temperature and Pressure) = 22.4L

N = 425 / 22.4

N = 18.973

∴No. of moles of methane = 18.9 mol

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.