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olchik [2.2K]
3 years ago
14

What describes the element Mg.

Chemistry
1 answer:
alexandr402 [8]3 years ago
8 0

Answer:Mg is aalkline eath meat belongs to group 2.

Explanation:

Its atomic number is 12 and atomic mass is 24.3

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The gas formed when coal is heated in the absence of air_____________
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The anser is- Carbon dioxide
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2 years ago
Name the postulates of Dalton atomic theory​
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Answer:

All matter consists of indivisible particles called atoms. Atoms of the same element are similar in shape and mass, but differ from the atoms of other elements. Atoms cannot be created or destroyed. Atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form compound atoms.

Explanation:

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3 years ago
250 ml glass of lemon juice contains 20 grams of sugar. How much sugar is in 500 ml bottle
iren2701 [21]

There is 40 g of sugar in a 500 ml bottle of lemon juice

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

the concentration of sugar in lemon juice :

\tt \dfrac{20~g}{250~ml}=0.08~g/ml

So for 500 ml juice :

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5 0
3 years ago
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Explanation:

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10 months ago
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