Fill the following blanks with suitable words :
(a) In water, the proportion of oxygen and hydrogen is ...................by mass.
(b) In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................

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Solution

(a) In water, the ratio of oxygen to hydrogen is 8:1 by mass.
(b) In a chemical reaction, the sum of masses of the reactants and their products remain unchanged. This is called the law of conservation of mass.

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Fill in the following blanks with suitable words:

(a) In water, the proportion of oxygen and hydrogen is ___ by mass.

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Question 44
Fill in the blanks

(a) In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. This is called ___.

(b) A group of atoms carrying a fixed charge on them is called ___.

(c) The formula unit mass of $C a_{3} (P O_{4})_{2}$ is ____.

(d) Formula of sodium carbonate is ___ and that of ammonium sulphate is ____.

Q. Fill in the blanks with suitable words:

2 M g + O_{2} \to 2 M g O

In this reaction the reactants are ______ and ________.

Q. Assertion :In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. Reason: According to the law of conservation of mass, matter can neither be created nor be destroyed.

Fill in the following blanks with suitable words :

(a) Chemical equations are balanced to satisfy the law of ..........

(b) A solution made in water in known as an .............. solution and indicated by the symbol .......

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Fill the following blanks with suitable words : (a) In water, the proportion of oxygen and hydrogen is ...................by mass. (b) In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................

(a) In water, the ratio of oxygen to hydrogen is 8:1 by mass. (b) In a chemical reaction, the sum of masses of the reactants and their products remain unchanged. This is called the law of conservation of mass.

Fill the following blanks with suitable words :
(a) In water, the proportion of oxygen and hydrogen is ...................by mass.
(b) In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................

(a) In water, the ratio of oxygen to hydrogen is 8:1 by mass.
(b) In a chemical reaction, the sum of masses of the reactants and their products remain unchanged. This is called the law of conservation of mass.