**🧪 Chemistry Insights: June 2024 Edition**

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Researchers have developed a new catalyst made from earth-abundant materials that significantly improves the efficiency of hydrogen production via water splitting. This breakthrough could lower the cost of green hydrogen, making it a more viable clean energy source.

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Inspired by biological systems, chemists have created a new class of self-healing polymers. These materials can autonomously repair damages at room temperature, potentially extending the life of plastic products and reducing plastic waste.

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A new study demonstrates that integrating quantum dots into solar cells can enhance their efficiency by up to 15%. This innovation could lead to more affordable and efficient solar energy solutions, accelerating the shift towards renewable energy.

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Scientists have discovered a novel electrochemical method to convert CO2 directly into valuable chemicals such as ethylene and ethanol. This technology offers a promising pathway for carbon capture and utilization, addressing both environmental and industrial needs.

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A new type of solid-state battery with a novel electrolyte has been developed, boasting higher energy density and improved safety over traditional lithium-ion batteries. This advancement could revolutionize electric vehicles and portable electronics.

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Pharmaceutical companies are increasingly adopting green chemistry principles to reduce the environmental impact of drug production. Recent innovations include using biocatalysts and environmentally benign solvents, leading to more sustainable manufacturing processes.

Stay tuned for more exciting updates in the world of chemistry!

Milliy sertifikat savollari
2024/yanvar

X idishga 3 litr etilen, Y idishga
6 litr sulfit angidrid solindi, ushu ma lu-motlar asosida tog'ri fikrni toping.
A) atomlar soni teng
B) massasi teng
C) molekula soni teng
D) miqdori moli teng

28 g noma'lum alkenning brom bilan reaksiyasidan olingan 2,3 dibromal-kanga ishqorning suvli eritmasi ta sir et-tirilganda, 41.6 g organik modda hosil boldi. Alkenni aniqlang.
A) 2,3-dimetilbuten-2
B) 2-metilbuten-2
C) 2-metilpenten-1
D) geksen-1

Monogolalogenalken tarkibida 7 ta vadorod atomlari mavjud bo'lsa, unga to g'ri keladigan ochiq zanjirli, uglerod atomlari tarmoglanmagan izomerlar soni eng ko'pi bilan nechta?
(Fazoviy izomerlar hisoblanmasin)
A) 6
B) 7
C) 5
D) 8

CH4 va N2 aralashmasida CH4 massasi N2 massasidan 4 marta ko‘p, miqdori 0,6 mol ga ko‘p bo'lsa, aralashmadagi N2 massasini toping.
A) 2,8 B) 5,6 C) 1,4 D) 3,2