Answered

At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Discover in-depth answers to your questions from a wide network of experts on our user-friendly Q&A platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

The molar mass of hf is 20. 01 g/mol. How many moles of sn are required to react completely with 40 g of hf? 1 mole 2 moles 3 moles 4 moles.

Sagot :

Neetoo

The molar mass of HF is 20. 01 g/mol, (a) 1 mole of Sn is required to react completely with 40 g of HF.

Molar mass of HF = 20. 01 g/mol

Mass of HF = 40 g

Number of moles of Sn = ?

Write the balanced chemical equation

    Sn + 2HF   →   SnF₂ + H₂

one mole of Sn is required to react with two moles of HF

Find number of moles of HF

    number of moles = mass / molar mass

    number of moles of HF = 40 g / 20. 01

    number of moles of HF = 2.0 moles

As the molar ratio of Sn and HF 1 : 2

There are 2 moles of HF, and from the molar ratio, it is clear that the number of moles of Sn is half of HF.

    So the number of moles of Sn = 2 × 1/2

          number of moles of Sn = 1 mol

You can also learn about molar mass from the following question:

https://brainly.com/question/12127540

#SPJ4

Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.