ICSE & ISC > Class 09 > Chemistry | CBSE Board | Homework Help

Firstly , molar mass = atomic mass . So you just need to know the atomic mass of an atom to know the molar mass and atomic mass is the sum of protons and neutrons of the atom

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What is matter

Posted by Anil Mahto 5 years, 2 months ago

ICSE & ISC > Class 09 > Chemistry

3 answers

Prem Kolte 4 years, 9 months ago

Matter is nothing but a smallest particle which can not be further divided into 2 halfs

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Varun Kumar 5 years ago

Anything that occupies space in the nature or our surroundings is called matter

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Vishwesh Naik 5 years, 1 month ago

Anything that occupies space is known as the matter

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What is matter ?

Posted by Yuvraj Patel 5 years, 5 months ago

ICSE & ISC > Class 09 > Chemistry

3 answers

Saireddy Vagdevi Vagdevi 4 years, 6 months ago

Anything that occupies space and has mass is called matter

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Malvika Srivastav 5 years, 5 months ago

Anything that occupies space and has mass is matter

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Saloni Kumar 5 years, 5 months ago

A matter is a substance which has mass and occupy space for e.g a table, chair

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What is doberneir traid?

Posted by Harsh Bansal 5 years, 5 months ago

ICSE & ISC > Class 09 > Chemistry

1 answers

Yogita Ingle 5 years, 4 months ago

According to Dobereiner, all elements occurred in groups of three, when arranged in increasing order of atomic masses. He referred to these groups as triads. In a traid the elements had similar chemical properties.

Traids of the Dobereiners classification:
Traid1:

Element	Atomic mass
Lithium (Li)	7
Sodium (Na)	23
Potassium (K)	39

Dobereiner’s law of triads states that, the atomic mass of the middle element of a triad is the arithmetic mean of the atomic masses of the other two elements.
Example: In the triad of lithium, sodium and potassium. The atomic mass of lithium is 7 and the atomic mass of potassium is 39. The average of masses of lithium and potassium gives atomic mass of sodium 23.

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Name a non metal which is liquid in room temperature

Posted by Aalok Bishnoi 4 years ago

ICSE & ISC > Class 09 > Chemistry

5 answers

All Things Master With Me 3 years, 6 months ago

Bromine

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Akash Singh 3 years, 10 months ago

Bromine

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Saireddy Vagdevi Vagdevi 4 years, 6 months ago

Bromine

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Rimjhim Dutta 5 years, 6 months ago

Bromine

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Aalok Bishnoi 5 years, 7 months ago

Bromine

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2500cm3 of hydrogen is taken at stp . The pressure of this gas is further increased by 2 and half times(temperature remaining constant). What volume will hydrogen occupy?

Posted by Shamita Yadav 5 years, 7 months ago

ICSE & ISC > Class 09 > Chemistry

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What is oxidation?

Posted by Yahya Ali Sheikh 5 years, 8 months ago

ICSE & ISC > Class 09 > Chemistry

1 answers

Yogita Ingle 5 years, 4 months ago

Oxidation is defined as the process of being oxidized or oxidizing. It refers to the loss of electrons in a reaction by an atom, an ion or a molecule. Oxidation occurs when the oxidation state of an atom, ion or the molecule rises up. The reduction is the process exactly opposite of oxidation wherein the electrons are gained and the oxidation state of a molecule, an atom or an ion goes low.

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Can you please help me to explain mixtures?

Posted by Ananya Moni 5 years, 9 months ago

ICSE & ISC > Class 09 > Chemistry