Предмет: Химия, автор: men19

Рассчитайте содержание питательных элементов в удобрениях Состав которых выражен формулами :KNO3 (NH4)2HPO4. K3PO4

Ответы

Автор ответа: Аноним
0
wKNO3 = K2O/2KNO3 = 94/202 = 46/5%
w(NH4)2HPO4 = 2N/NH4)2HPO4 = 28/132 = 21.2%
wK3PO4 = 3K2O/2K3PO4 = 283/424 = 66/5%
Похожие вопросы
Предмет: Химия, автор: fruitcoffee
Предмет: Английский язык, автор: sameks0702
1.Choose the sentences in Passive Voice and translate them into Russian.
a) They speak English in Australia. _______________________________
b) My granny cooks tasty pies. ___________________________________
c) America was discovered by Columbus. __________________________
d) The letter must be sent. _______________________________________
e) The babies will be looked after. _________________________________

2.Choose the correct form of the verb.
The church ________ built in the 14th century.
is b. was c. will be
The exhibition ____________ decorated soon.
is b. was c. will be
Two bottles ___________ drunk because it was too hot.
are b. were c. will be
Such films ____________ shown on this channel.
isn’t b. can’t c. aren’t
This painting ____________ sold for 2,000$ last month.
is b. was c. were

3.Complete the sentences using the verbs in brackets in passive.
The rooms __________________ (clean) every day.
This book _________________ (translate) into many languages.
A lot of parties ___________________ (held) here.
The cake _____________________ (buy) tomorrow.
This rule must ____________________ (explain) to the pupils.

4.Write the same in a different way. Use the Passive Voice.
Fleming discovered penicillin. __________________________________
You must learn the words. ____________________________________
He saw Mary in the park. _____________________________________
I won’t forget your help. ______________________________________
A lot of people recycle bottles to help our planet. _________________
Предмет: Математика, автор: Rin12