Для подкормки растений потребовалось 300 кг 0,5% раствора калийной селитры KNO3. Сколько будет израсходовано селитры и воды?

Прочитай письмо, которое Эндрю написал жителям далёкой планеты. Вставьслова, которыестёрлись: summer, my sister, smart, draw, student, write.

                                                                                                  10 April

Dear friends,

     My name is Andrew. I am a boy. I am eight. I am from Great Britain. I live with my mum, dad, and …Rose. I have got a dog Wolfie. Rose and I like to play with Wolfie. Wolfie is merry and …. Have you got dogs or cats, parrots or fish?

     I go to school and I am a …. I can read, write and count. I like to read fairy tales and … pictures. I also like to … letters to my friends. Do you go to school? Have you got post offices and postmen?

     I like … . I ride my bike and play football in summer. Can you play football? Have you got spring or winter? Have you got rivers and forests?

     Please write back.

     Andrew.

Помогите решить задачу!!!

 У Кости конфет в 4 раза меньше, чем у Саши, а у Васи конфет в 2 раза больше, чем у Саши. Сколько конфет у коли ,если у Васи их 16?

Возможны ли реакции: Fe2O3+C...; Fe2O3+SO3...; Fe2O3+ NaCl...; Fe+H2SO4...?