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.

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Uploaded: 27.08.2016

Positive responses: 0
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Sold: 2
Refunds: 0

Seller: Юрий Физик

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Description

By what percentage will decrease the activity of the iridium isotope 192Ir77 for 15 days? The half-life of 75 days.

Additional information

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.

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