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Francesco Bartolomeo Rastrelli was born in Paris in 1700. His father— the court sculptor and architect Carlo Bartolomeo Rastrelli, taught his son craftsmanship from an early age. In 1716, after the death of King Louis XIV of France, the Rastrelli family moved to St. Petersburg. The head of the family joined the court of Peter I and cast cannons and sculptures for interiors in the city under construction on the Neva River. One of Francesco Rastrelli's most famous creations in Russia was the Winter Palace in St. Petersburg. It was built between 1754 and 1762 and served as the official residence of the Russian monarchs until 1917. Rastrelli designed the palace in the Baroque style, with its el

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Массовая доля хлороводорода в соляной кислоте равна 100%, поэтому массовая доля воды в растворе равна: 100% - 26,2% = 73,8% Масса воды в растворе: 400 г * 0,738 = 295,2 г Масса хлороводорода в растворе: 400 г - 295,2 г = 104,8 г Ответ: масса хлороводорода в 400 г раствора соляной кислоты равна 104,8 г.

Б) (не) вежлив, а груб.