Hoà tan hoàn toàn m gam hỗn hợp bột gồm Fe3O4 và FeCO3 trong dung dịch HNO3 dư, nóng thu được 3,36 lít

Câu hỏi: Hoà tan hoàn toàn m gam hỗn hợp bột gồm Fe3O4 và FeCO3 trong dung dịch HNO3 dư, nóng thu được 3,36 lít hỗn hợp A gồm hai khí (đktc) và dung dịch B . Biết tỉ khối hơi của A so với hiđro bằng 22,6. Xác định m, theo các kết quả …

Hoà tan hoàn toàn m gam hỗn hợp bột gồm Fe3O4 và FeCO3 trong dung dịch HNO3 dư, nóng thu được 3,36 lít Read More »

These college students are discovering Israel and their futures

“It’s impossible to have a more productive summer than I’ve had,” asserts Alexandra Tolmasov. The enthusiastic 20-year-old is just completing nearly seven weeks as a participant in the ninth annual Summer Science Research Internship Program, a joint Bar-Ilan University-Yeshiva University initiative. The Program enables students to gain hands-on experience in emerging scientific fields while being …

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Mathematics helps us understand the complexity of our microbiome – Digital Journal

The human gut microbiome refers to a complex ecosystem of thousands of microbial species and their genes contained within the gastrointestinal tract. How these organisms behave and the extent to which they are in balance is a key influencing factor upon overall health and in relation to different metabolic conditions. Unraveling key data is important …

Mathematics helps us understand the complexity of our microbiome – Digital Journal Read More »

Why you should join a journal’s editorial board Susan D’Agostino explains how serving as a – Nature.com

Adapted from Getty If you’re an early-career researcher, you might not hear much from mentors about the prospect of joining a scientific editorial board for an academic journal or a volume of peer-reviewed research papers. Your mentors might even discourage board membership out of concern that your time would be better spent on research. However, …

Why you should join a journal’s editorial board Susan D’Agostino explains how serving as a – Nature.com Read More »

Students in remote schools perform better in Dzongkha – KuenselOnline

Schools should emphasise on effective teaching-learning processes especially in teaching Mathematics, Dzongkha and English subjects, according to the Competency Based Assessment Test (CBAT), 2018. Bhutan Council for School Examinations and Assessment (BCSEA) released the 2018 CBAT for class VI recently.  CBAT, a year-end assessment report, stated that CBAT present the findings of students’ achievement and …

Students in remote schools perform better in Dzongkha – KuenselOnline Read More »

Dẫn luồng khí CO đi qua hỗn hợp gồm CuO và Fe2O3 nung nóng, sau một thời gian thu được chất rắn X và khí Y.

Câu hỏi: Dẫn luồng khí CO đi qua hỗn hợp gồm CuO và Fe2O3 nung nóng, sau một thời gian thu được chất rắn X và khí Y. Cho Y hấp thụ hoàn toàn vào dung dịch Ba(OH)2 dư, thu được 29,55 gam kết tủa . Chất rắn X phản ứng với dung dịch HNO3 …

Dẫn luồng khí CO đi qua hỗn hợp gồm CuO và Fe2O3 nung nóng, sau một thời gian thu được chất rắn X và khí Y. Read More »

Call for youngsters to join Indian armed forces – News Today

Chennai: “More you sweat in peace, less you bleed in war. Every day is Independence Day for us,” says Commander L Radhakrishnan of K K Nagar, who served in the Indian Navy for nearly 30 years. The Commander wants youngsters to join the armed forces where there is tremendous opportunities. India got Independence after many  …

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The war against ‘discriminatory’ knowledge and competence embraced by higher education – American Thinker

You’ve heard of “Latinx,” which is used to address “a person of Latin American origin or descent” in a “gender-neutral or nonbinary” way. Prepare to be introduced to the term “Mathematx,” which refers to a way to “reconceptualize” mathematics. Rochelle Gutiérrez, a professor of mathematics and Latino/a studies at the University of Illinois at Urbana-Champaign …

The war against ‘discriminatory’ knowledge and competence embraced by higher education – American Thinker Read More »