Предмет: Химия, автор: Аноним

Задача:
У 190г води розчинили 14г натрій хлориду NaCl. Яка масова частка солі у розчині?

Ответы

Автор ответа: steguraangelina

дано:

м(р-ну) =190г. m(р-ну)=m(р-ну)+м(солі)= 190+14=204

м(солі)= 14г.

w(солі)=м(солі)р.р : м(р-ну) = 14:204*100%=0.068627451%

w=?

Объяснение: натрій хлориду це і є сіль, всі *м* нають бути на англійській, да чучуть странна відповідь вишла, але правильна

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: 13243546576879800

Они построить ( построят или построют) мост!!! И объяснить почему выбрали этот вариант!!! ПОМОГИТЕ ПРОШУ ВАС! СЕГОДНЯ ЭТО НУЖНО НА РУССКИЙ!!! УМОЛЯЮ,,,,, ЗАРАНЕЕ СПАСИБО!!!

1 год назад

Предмет: Английский язык, автор: margokravstova

A lot of famous people make their contribution to charity.
Read the information about the greatest charity pop concert in the world in 5 – 7 minutes and write the answers to the questions.
Where did the concert take place? _________________
How many people were at the concert? _____________
What charity organized the concert? ________________
What did the charity raise money for? _______________
How much money did the charity collect? It was Saturday, July 13th 1985. The sun was shining and I was on my way to Wembley Stadium to the greatest pop concert for Africa. Wembley Stadium was full – there were seventy-two thousand people there. The atmosphere inside the stadium was fantastic – everyone was happy, everyone was excited because of all the music they were going to hear and everyone wanted to do something for Africa. At 12 o’clock the biggest pop concert in the world began. Everyone was dancing to the music. Everybody shouted and waved. Wembley Stadium is a big place and not everyone could get close to the stage. There were big TV screens on each side of the stage so that you could see the singer’s faces close-up. As the concert continued people started to give money to Live Aid. All the time during the concert they told us how much money were donating to Live Aid. The whole Live Aid concert finally finished at about 4.30 in the morning. What a concert! They collected fifty million pounds for helping the needy people in Ethiopia. It made me feel good to be involved

1 год назад

Предмет: Английский язык, автор: 121po

Find the odd one out. 1. cough, cough syrup, nose drops, milk with honey2. the plague, cold, aspirin, flu3. sore throat, headache, cough, high temperature

Задача: У 190г води розчинили 14г натрій хлориду NaCl. Яка масова частка солі у розчині?

Ответы

Задача:
У 190г води розчинили 14г натрій хлориду NaCl. Яка масова частка солі у розчині?