The statement that "substance A is rice, and substance B is sugar" is correct.
WHAT IS A MIXTURE?
- A mixture in chemistry is a substance that contains two or more different substances.
- One notable characteristics of a mixture is that it can easily be separated using physical means.
According to this question, a mixture contains two substances A and B. Water is added to this mixture for easy separation.
- Substance A is filtered out. This means that substance A is a solid that is insoluble in water. This substance is RICE.
- The remaining liquid is heated to remove the water content leaving a residue of substance B. This shows that substance B is also a solid but soluble in water. SUGAR best fits this description.
Therefore, in the mixture of two substances A and B, substance A is rice, and substance B is sugar.
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Answer:
H 13.8mol CO2
Explanation:
we know that per 1 mol there is 6.022x10^23 molecules
so divide 8.23x10^22/ AVG # ( # above) we get 13.8mol of CO2 not to be confused with A
No It is not correct.
Correct oxidation number of hydrogen in NaH,H2 and H2S are:
- Let x be the Oxidation state of ’H’ by oxidation state rule.
x+1 =0 (Sodium has +1 Oxidation state )
x=−1
Therefore, -1 is oxidation number of Hydrogen in NaH.
- The oxidation number of an element's atom in its standard state is zero. As a result, the oxidation number for H2 is zero.
- The hydrogen oxidation number in H2 is +1. As a result, that hydrogen atom can be reduced to lower oxidation states of hydrogen, such as 0 and -1. However, because +1 is the highest oxidation state of hydrogen, the hydrogen atom cannot be reduced any further.
<h3>What is oxidation number?</h3>
In simple terms, the oxidation number is the number assigned to elements in a chemical combination. The oxidation number is the number of electrons that atoms in a molecule can share, lose, or gain when forming chemical bonds with atoms of a different element.
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Answer:
In order to obtain eight valence electrons (an octet), the potassium atom will transfer its single valence electron to the fluorine atom.