ngôn ngữ thơ của bài Quê hương
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TN
0
19 tháng 9 2024
a, PT: \(Cu+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2Ag\)
_______a_______2a_________________2a (mol)
Ta có: m tăng = mAg - mCu (pư)
⇒ 3,04 = 2a.108 - 64a
⇒ a = 0,02 (mol)
⇒ mCu = 0,02.64 = 1,28 (g)
mAg = 0,02.2.108 = 4,32 (g)
b, \(C_{M_{AgNO_3}}=\dfrac{0,02.2}{0,2}=0,2\left(M\right)\)
MA
0
NT
6 tháng 1 2025
Subject: Changes in My Family Hi Hoai, I hope this email finds you well. I wanted to share some recent changes in my family. My sister just started university, and we’re all very proud of her. She’s studying engineering and seems to enjoy it a lot. Meanwhile, my dad got a new job closer to home, so we get to spend more time together, which has been wonderful. My mom has also taken up gardening, and our backyard is now full of beautiful flowers and vegetables. These changes have brought us closer as a family, and I feel really happy about it. How about you? Any updates on your side? Looking forward to hearing from you soon! Best wishes, Dien