найти корень каждого уравнения,уменьшив каждую часть на соответствующее число:       х+ 681=921;   х+8105=13400.

 

найти корень каждого уравнения, увеличив каждую часть на соответствующее число:        х-744=551;   х-6292=722

Решите неравенство: 2x+7<5(2-x)+4

Проверти пожалуйста,правильна написала?)))))если есть ошибки исправляйте)

Life is a mystery; it dodges at every corner but still there are some moments which take us out of its worries, your birthday is a great source of happiness for all of us. Wish you a special birthday and thanks to keep us together. On your birthday today, most people will wish that you earn lots of money, but I wish you wealth. Most people will wish you fun times but I wish you healthy times. Most people will wish you delight but I wish you pure joy. Most people will wish you many friends, but I wish that we always stay together. Happy Birthday! Life is a journey and birthday is its beginning. As birthday comes every year, it provides an opportunity to start a life with a better passion. Wishing you great moments and a life full of fun specially on this Birthday. I wish you the happiest moments of life on your birthday. May you always enjoy your life. Wishing you fantastic people and friends like us on this Birthday.

В результате реакции образовалось 3,6 грамм НСl .

1- написать ур-е реакции получения HCl из простых веществ.

2-определить массу исходных вещ-в в граммах

3-определить количество исходных вещ-в (моль)