Using the specific heats of the rock and the water, Lydia calculates that the final temperature of the water and the rock will be 28°C. After she lets the rock sit in the water for 15 minutes, the
temperature of the water and the rock are both 26°C. Which statement BEST describes why
Lydia's calculation and the temperature of the water and rock after 15 minutes are not the same?
of
ch
A
Some of the thermal energy was absorbed from the surroundings.
В.
More thermal energy was absorbed by the water than expected
C.
Some of the thermal energy was transferred to the surroundings
D
More thermal energy was absorbed by the rock than expected.
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7.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

explanation: no but i do not usually comment

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

5 structural isomers

the isomers are:

n-exane :   ch3ch2ch2ch2ch2ch3

2-methylpentane :   ch3ch(ch3)ch2ch2ch3

3-methylpentane :   ch3ch2ch(ch3)ch2ch3

2,3-dimethylbutane :   (ch3)2chch(ch3)2

2,2-dimethylbutane :   (ch3)3cch2ch3