من عجائب الكيمياء
🧪أن عنصر الصوديوم (Na) ينفجر عندما يلامس الماء،
🧪بينما عنصر الكلور (cl) يستخدم كسلاح كيميائي في الحرب العالمية الاولى،
🧪المدهش في الامر أنه عند دمجهما نحصل على المركب (Nacl) المستخدم
📫 www.tg-me.com/NationallGo
BY ناشيونال جيوغرافيك 🏞 | National G
The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.
Importantly, that investor viewpoint is not new. It cycles in when conditions are right (and vice versa). It also brings the ineffective warnings of an overpriced market with it.Looking toward a good 2022 stock market, there is no apparent reason to expect these issues to change.
ناشيونال جيوغرافيك from jp