Вопрос школьника по предмету Химия
Решите задачу пожалуйста:при очистке медного купороса получилось 150 мг примесей что составило 2 % от массы образца. Определить массу технического медного купороса который подвергли очистке
Ответ учителя по предмету Химия
Дано:
m(примесей) = 150 мг
w(примесей) = 2% = 0,02
Найти:
m(CuSO₄)
Решение:
m(CuSO₄) = (150мг×100%)÷2% = 7500 мг
Ответ: m(CuSO₄) = 7500 мг
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After making her big-screen debut in the crime drama The Third Secret (1964), Judi Dench acted in such films as A Room with a View (1985) and A Handful of Dust (1988). She took the role of James Bond’s boss, M, in GoldenEye (1995) — the first of several Bond movies in which she appeared — and subsequently played two British queens, the recently widowed Queen Victoria in Mrs. Brown (1997) and Queen Elizabeth I in the comedy Shakespeare in Love (1998). For her role as Elizabeth I, she won an Academy Award for best supporting actress, and, for that of Queen Victoria, she won an Academy Award nomination and the Golden Globe Award for best actress in a drama. More Oscar nominations for best actress came for her work in the role of Armande Voizin — an elderly, eccentric landlady in Chocolat (2000), British writer Iris Murdoch in Iris (2001), a theatre owner in Mrs. Henderson Presents (2005), the lonely teacher Barbara Covett in Notes on a Scandal (2006) and an activist in Philomena (2013).
true false
5.1 Judi Dench played in her first film in 1964.
5.2 She played the role of James Bond’s boss only in one film in 1995.
5.3 She acted in the role of the same queen in films Mrs. Brown and Shakespeare in Love.
5.4 She won an Oscar for the role of Queen Victoria.
5.5 After winning an Oscar she was nominated for it 5 more times.