The Russian Federation is the largest country in the world. The country is washed by three oceans, the Arctic, Atlantic and Pacific oceans and by twelve seas: the White sea, the Barents sea, the Okhotsk sea, the Baltic sea, the Black sea, the Caspian sea, sea of Azov and others. Russia borders on many countries such as Norway, Finland, Estonia, Latvia and Lithuania in the North, China, Mongolia, North Korea in the South-East, Poland, Belarus, Ukraine in the West, and others. There are forests and deserts, high mountains and deep valleys in our country. Elbrus is the highest point (5,633 m) in Russia and Europe. There are many great and small rivers and deep lakes of the country. The major rivers are the Volga, the Don, the Kama, the Oka, the Northern Dvina, but there are several other rivers that originate in Russia, but they are flowing in other countries, such as the Dnieper and the Western Dvina. In Asia, the major rivers are the Ob, the Yrtysh, the Yenisei, the Angara, the Lena, the Amur, the Kolyma and others. The largest lakes is the Baikal, the Ladoga and the Onega. The Baikal is the deepest freshwater lake in the world, and its water is the purest in the Earth. The climate of Russia is very diverse, from arctic to subtropical.The Russian Federation is very rich in natural and mineral resources. It has deposits of oil, gas, iron, gold, non-ferrous metals and many other minerals. I love my country very much.
У калориметр що містить m1=2кг льоду при температурі t1=-5С,долили m2= 200 гр води при температурі t2=5С.Визначте ,скільки льоду буде у калориметрі після встановлення тепловоі рівноваги. m- ?
Q2=c2*m2*(t2-t)=4200*0,2*5=4200 Дж
Q1=c1*m1*(t-t1)=2100*2*5=21000 Дж
Из сравнения видно что тела воды не хватит чтобы нагреть лед до 0 Значит дальнейшее нагревание льда будет происходить за счет кристаллизации налитой воды mл*λ=Q1-Q2 mл=(Q1-Q2)/λ=(21000-4200)/330000=50*10^-3 кг=50 г( налитой воды замерзнет и превратится в лед)
Объяснение:
ьалалплпркощвлытутушудкл