Предмет: Химия, автор: anastasiia2610

Какова массовая доля раствора

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Автор ответа: Platinum15

2

w = 46*0.2 +135 *0.6 / (46 +135) *100% = 90.2/181*100% = 50 %

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Example: I 0) live in Russia.

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это вариант "A"
b) Read the text again. Decide whether the statements are true or false.

Example: 0. The author lives in Russia. – True.

00. In summer people wear warm clothes. – False.

1. The weather is different in Russia. – ________________________________

2. People usually wear warm clothes in winter. – _________________________

3. In winter children go windsurfing. – _________________________________

4. Spring is a wonderful time of the year. – _____________________________

5. In spring children like walking in the park with their friends. – ____________

6. Summer is the best time to go skating. – ____________________________

7. Boys wear shorts and T-shirts in summer. – ___________________________

8. Autumn is very cold. – ____________________________________________

9. In autumn it is sometimes rainy. – ___________________________________

10. The trees are not beautiful in autumn. – ______________________________

а это вариант "В"
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