How quickly will I receive my key after purchase?

Most keys are delivered instantly by sellers after payment confirmation. You will receive the key by email or directly on the website.

Can I return or exchange a key if it doesn’t work?

Usually yes, key sellers provide a guarantee on all keys. In case of activation issues, contact the seller’s chat for assistance.

Are keys supported for different platforms — Steam, Xbox, PlayStation, and others?

Yes, on Irongamers you will find keys and accounts for most popular platforms, including Steam, EA Play, Uplay, Xbox, Twitch, and Epic Games.

Can I get discounts and bonuses for referrals?

Usually yes, sellers can give personal discounts on new games and keys.

What payment methods are available?

We support various payment methods: bank cards, e-wallets, SBP, and other convenient options.

How is security and confidentiality ensured when buying?

The purchasing process takes place on a special page that uses modern data protection methods, encryption, and guarantees full confidentiality of your payment and personal data.

52. Solving a chemistry problem

All Chemistry offers

Content: 3.rar (22.77 KB)
Uploaded: 26.01.2023

Positive responses: 0
Negative responses: 0

Sold: 7
Refunds: 0

Seller: Derkach

Ask a question

Description

3. The degree of conversion of ethylene in the process of its direct oxidation is 25%. The volume of ethylene consumed in the process is 1500 m3. Determine the selectivity for ethylene oxide if the mass of ethylene oxide is 500 kg. Answer: 67.9%