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.

87. Solving a chemistry problem

Content: 40.rar (15.94 KB )
Uploaded: 17.10.2022

Positive responses: 0
Negative responses: 0

Sold: 5
Refunds: 0

Seller: Derkach

Ask a question

$1.22

i agree with "Terms for Customers"

Bookmark

Description

4. Titanium in steel was determined by the photometric addition method under the following conditions: sample weight = 0.150 g, solution volume 100 ml. Cuvette l = 1 cm. 20 ml reagent was added to 25 ml of the resulting solution and diluted with water to the mark up to 50 ml. To the second portion of 25 ml was added 5 ml of a standard solution of titanium with a concentration of 0.04 mg/ml, 20 ml of the reagent. The total volume of the solution was 50 ml. The optical density of the first solution turned out to be 0.33. and the second 0.64. What is the percentage of titanium in the steel sample?

Additional information

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.

Responses

No feedback yet