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Chemistry

Asked by Suis

What are the similarities between chemical bonds and intermolecular forces

Intermolecular forces such as London forces, permanent dipole-dipole and H-bonds holds molecules together in liquid or solid. Chemical bonds hold atoms or ions together, and chemical bonds are much stronger than intermolecular forces, i.e chemical bonds require more energy to break compare to intermolecular force. Chemical bonds are the bonds between ATOMS and include Covalent bonds, Ionic bonds... more

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Maryam Hussain
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131 students helped

Science

Asked by Nokubonga

What causes the person with emphysema to find exercise difficult

Emphysema is a lung condition that causes shortness of breath. This happens when the inner walls of the alveoli in the lungs become weak rupture, making bigger airspaces instead of smaller ones. This means that when an individual takes a breath, they can’t fill their lungs as much since there is now a reduced surface area for the gas exchange to take place on. When we exercise, our hearts beat f... more

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Maryam Hussain
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131 students helped

English

Asked by Fairy

Example in today's society of absolute power corrupts absolutely

An example of this could be political corruption around the world that still happens and is complained about to this day. When in power politicians can change people's lives. It is a key example of what this quote means in that absolute power can and has changed peoples moral compass / destroyed it. There was a study done to show this in children. When in control and being given choice but told... more

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Snehil Manoj
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46 students helped

Chemistry

Asked by Lyrick

How many moles are there in 63.2 g of VH4

Moles = Mass / Molecular Mass Moles = 63.20 / 16 = 3.95Mol

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Gurjeet Cheema
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401 students helped

Maths

Asked by Aarushi

In a school choir 3481 students line up to form a square. Find the number of students in each row.

First, let’s visualise the problem. Students are lined up in rows to form a square. We can imagine this as dots on a square grid. A 2x2 grid would have 4 dots. A 3x3 grid would have 9 dots. A 4x4 grid would have 16 dots. We see the pattern is that the number of dots (or students in our case) is equal to the square of the number of dots/students per row. Our answer is therefore simple. The numbe... more

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Sayeed Ahmed
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99 students helped

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