вычислите увеличение внутренней энергии водорода массой 2 кг при изобарном его нагревании на 10К. Удельная теплоемкость водорода при постоянном давлении равна 14кДж/(кг*К)

Помогите составить сложные предложения со словами аквалангист , аквариум , портрет , электровоз , электрический.

Fill in prepositions where necessary to complete the sentences. 1) The sum ... money he gave me was not enough to buy the CD I wanted. 2) It is very rude ... you to speak like that. 3) You will spoil ... your children if you let them do anything they want. 4) Fascist organizations are a threat ... our society and democracy. 5)I feel that somebody has been spying...me for some time.Who can it be? 6) Cruelty and violence must be taken away... the screen. 7)I can't explan Alan's cruelty... his dog.We must speak... him 8) Let's go... the cinema instend... going to the circus. 9) The news aboud his rude behaviour brought shame... his famaly. 10) I was full of shame... your rude words. 11) Mr Robinson felt no shame... his behavior. 12) This mam spied... the British during the war.

 Помогите!

4-метилгептановая кислота

3-этилфенол

3-метилпентаналь

Мне нужны их общие формулы. И у первого составить по 2 изомера и гомолога,вроде так.