Aballoon has a volume of 253.2 ml at 356k. the volume of the balloon is decreased to 165.4ml. determine the new temperature

233K

Explanation:

V1/ T1 = V2/T2

where

V1 ( initial volume)= 253.2 mL

T1 ( initial temperature in Kelvin) = 356 K

V2( final volume)= 165.4 mL

T2( final temperature in Kelvin)= ?

Since we are trying to calculate the final temperatute, rearrange the equation to make T2 the subject and then substitute the known values.

T2= V2/(V1/T1)

T2= 165.4/(253.2/356)

T2= 232.552922591

T2= 233 K

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.