Alkaline earth metal are the elements present in II group in the periodic table and are known as 'Metals' and have a charge of +2.
Alkaline earth metals - Be , Mg Ca, Sr , Ba, Ra
Halogens are present in VII A group in the periodic table and are 'Non-metals' and have a charge of -1.
Halogens - F, Cl, Br, I, At
When Alkaline earth metal (metals) combine with Halogens (non-metals) the compound formed will be ionic compound and the formula of the compound will be based on the charges of the element.
When we write the formula of the ionic compound the charges of the elements get criss crossed.
For example - Mg (Alkaline earth metal) have a charge of +2 and Cl (Halogen) have a charge of -1 and when they combine to form the formula their charges get criss crossed and we will get 
or 
When an alkaline earth metal, A, reacts with a halogen, X, the formula of the Ionic compound formed should be 
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Explanation:
Answer:
mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas
Explanation:
iquid 1 reacts with Liquid 2, producing a solid and a gas. Using this scenario, which supports the law of conservation
of mass?
EEEE
O mass of Liquid 1 + mass of solid = mass of Liquid 2 + mass of gas
O mass of Liquid 1 - mass of solid = mass of Liquid 2-mass of gas
O mass of Liquid 1 - mass of Liquid 2 = mass of solid + mass of gas
O
based on the law of the conservation of matter, the sum of the masses of the reactants must equal the sum of the masses of the products
so the correct answer is
mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas
The teacher prepares 2.50 liters (l) of a salt solution for a class experiment, in this quantity 2.65 quartz are present.
<h3>What is conversion factor?</h3>
Conversion factor is a quantity which will be multiplied or divide with any other measurement for the conversion of that measurement.
Given that quantity of salt solution = 2.50 L
We know that, 1 L = 1.06 qt
Here conversion factor is 1.06 qt/L as it will be multiplied on given measurement to convert into quartz as:
2.50L = 2.50L × 1.06qt/L = 2.65qt
Hence required value is 2.65qt.
To know more about conversion factor, visit the below link:
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