Предмет: Химия, автор: Vika134234

основы органічних речовин є карбон в організмі людини масою 60 килограмм міститься близько 12,6 кг атомів карбону обчисл частку карбона в організмі людини такої масси у відсотках
дам 38 балів, тільки щоб було дано,розв'язання і відповідь, прошуу будь ласкаа поможіть

Ответы

Автор ответа: nikolaygr

Відповідь:

Дано

m(люд)=60кг

m(C)=12,6кг

---------------------

w-?

Розв'язок

w=m(C)*100/m(люд)=12,6*100/60=21%

Пояснення:

Автор ответа: Michelangelo0

Ответ:

21% массы человеческого тела состоит из атомов углерода

Объяснение:

(12,6 кг/60 кг) * 100 = 21%

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Українська мова, автор: karinahlinana360

контрольний твір у публіцистичному стилі на морально-етичну тему 1. друга за гроші не купиш

11 месяцев назад

Предмет: История, автор: mpatsaliuk

Поясніть що зображено на ілюстрації

11 месяцев назад

Предмет: Английский язык, автор: sonyaaakucheruk

Grammar Present perfect continuous Match (1-6) with (a-f) to make short conversations. 1 You look tired. e 2 Why are you shivering? 3 Why are you laughing? 4 Why are you so angry with me? 5 You're sweating! 6 You look surprised. a Oh, Luna's been telling us jokes for the last half hour! b Why? I've been waiting for you for ages! c I've been standing in the cold for an hour! d Yes. Your teacher has been telling us what a good student you are! e Yes. We've been working all evening. f Are we? Sorry! Jo's been playing tennis with me.

Complete the sentences with the Present perfect continuous form of the verbs. Why is the joke in question 1 funny? 1 Have you been waiting (you/wait) long? 2 I'm fed up. It 4 I can't sleep! My neighbours (rain) all day. 3 She's really happy with her exam results. She (smile) all afternoon! 5 I'm really tired. I........ (not sleep) well all week! 6 Mr Green is in a bad mood. He ** 3 (play) loud music for ages. (frown) all lesson. 7 I don't think she's enjoying my poem. She (yawn) since I started reading it! 8 Why are you shivering? What (you/do)?

**4 Phoebe's been having a party! But there's a problem. Read what she says, then complete the guests' replies. Use the Present perfect continuous form of these verbs. blush chat dance play sit tidy Phoebe I'm really angry. Someone's just broken my mum's favourite vase. Who did it? Beth Mark Layla Tom Olivia It wasn't me! 'I've been playing computer games all night. It wasn't me! 1 2 this chair for hours. Maybe it was Dan? He 3 It wasn't Josie. She 4, up in the kitchen all evening. Don't look at me! 15 to Tom for the last half hour. We haven't moved! Arthur Maybe it was your brother? I 6 to music all night! your question. He 7. red the whole time!

What's been happening? Read the conversations. Complete the replies. Use the Present perfect continuous form of suitable verbs. him since you asked 1 A You all look very fed up! B We are! We've been doing homework for hours! 2 A Why has your dad got paint all over his clothes? 4 A You look very hot! B Yes. I....... B He Do you want to have a look? think I'm very fit! 3 A Why are my books all over the floor? B Sorry. We. them. my bedroom. 7 A Why is his hair wet? B He. 5 A What's that noise? B It's my sister. She. awful rock music all afternoon. Grammar Reference pages 90-91 aerobics. I don't 6 A Why is the kitchen in such a mess? B Sorry! I........ Ella's birthday, I'll tidy up! a cake for ..... in the pool.