Calculate the number of atoms in each of the following: (i) 52 moles of He (ii) 52 u of He (iii) 52 g of He

Asked by Last Modified  

Follow 1
Answer

Please enter your answer

(i) 1 mole of He = 6.022 × 1023 atoms of He 52 mol of He = 52 × 6.022 × 1023 atoms of He = 3.131 ×1025 atoms of He (ii) Atomic mass of He = 4 amu In 4 amu is the mass of He, count of atoms = 1 Therefore 52 amu is the mass of He atoms= 1/4x52 = 13 atoms of He (iii) 4g of He...
read more
(i) 1 mole of He = 6.022 × 1023atoms ofHe 52 mol of He = 52 × 6.022 × 1023atoms ofHe = 3.131 ×1025atoms ofHe (ii) Atomic mass of He = 4 amu In 4 amu is the mass of He, count of atoms = 1 Therefore 52 amu is the mass of He atoms=1/4x52 = 13 atoms of He (iii) 4g of He contains = 6.022x 1023atoms Therefore 52 g of He contains = 6.022x 1023/4x 52 = 7.83 x 1024atoms read less
Comments

Related Questions

Which of the following is used in photoelectric cells? (a) Na (b) K (c) Li (d) Cs
Cs is used in the photoelectric cell due to the lowest ionization enthalpy among all alkali metals.
Jitesh
What are electrocyclic reaction?
Electrocyclic reactions are a class of pericyclic reactions where a cyclic compound undergoes ring-opening or ring-closing transformations under thermal or photochemical conditions. These reactions involve...
Monika Katoch
Explain why HC1 is a gas and HF is a liquid.
Fluorine is most electronegative due to this HF is more polar than HCl. Therefore HF is associated with intermolecular H Bonding and liquid at room temperature.
Dr. rajani

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Isotopes-1
1) What is an Isotope? Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. 2) What determines the atomic number of an element? A...

convert (i) nitromethane into dimethylamine? (ii) propanoic acid into ethanoic acid?
QUESTION convert (i) nitromethane into dimethylamine? (ii) propanoic acid into ethanoic acid? ANSWER Nitromethane into dimethylamine



Learn how to learn Chemistry
I suppose many of you have been through the latest web series KOTA FACTORY were some struggles that students face with Chemistry have been very aptly portrayed. The honest approach of the students regarding...
R

Recommended Articles

With the mushrooming of international and private schools, it may seem that the education system of India is healthy. In reality, only 29% of children are sent to the private schools, while the remaining head for government or state funded education. So, to check the reality of Indian education system it is better to look...

Read full article >

E-learning is not just about delivering lessons online. It has a much broader scope that goes beyond manual paper or PowerPoint Presentations. To understand the reach of E-learning and how the whole process works in developing the Educational system, we will discuss a few points here. Let us find out how this new learning...

Read full article >

While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...

Read full article >

Appearing for exams could be stressful for students. Even though they might have prepared well, they could suffer from anxiety, tension etc. These are not good for their health and mind. However, following a few exam preparation tips can save them from all these and help them to score good marks. Let’s find out all...

Read full article >

Looking for Class 11 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you