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3 years ago

Which of the following describe chemical properties?

2 answers:

3 0

<span>chemical properties is the changes in chemical manner of a
substances. Antacid tablets neutralize stomach acid is a chemical properties (it is an acid) which produce new products... salt and water
The others are physical properties</span>

Rom4ik [11]3 years ago

3 0

Answer: Option (b) is the correct answer.

Explanation:

When any change in the chemical composition of a substance occurs then it is known as a chemical change.

For example, reactivity, toxicity, flammability, combustion etc are all chemical properties.

So, when sugar burns in air to form water and carbon dioxide then there occurs change in chemical composition of sugar. Therefore, chemical property of sugar also changes.

On the other hand, when there occurs no change in chemical composition of a substance then it is known as physical property.

For example, density, boiling point, freezing point etc are all physical properties.

Therefore, we can conclude that sugar burns in air to form water and carbon dioxide describe chemical properties.

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Please help it’s due really soon

shtirl [24]

The type of chemical bond depends on the substances taking part in it. If the substances are metal and non-metal, then the bond between them is ionic. If two substances are metal, then the bond between them is metallic. If two substances are non-metal, then the bond is covalent.

So basically put this:

Metal + Nonmetal = Ionic

Metal + Metal = Metallic

Nonmetal + Nonmetal = Covalent

8 0

2 years ago

Write down the names of compounds represented by the following formulae:

Angelina_Jolie [31]

A-Aluminium sulphate.
B-Calcium Chloride.
C-Potassium sulphate.
D-Potassium Nitrate .
E-Calcium Carbonate.

8 0

3 years ago

Convert 6mol NO2 into grams Convert 800 grams of LiO into moles! Convert 4500 grams of SO2 into molecules! Convert 30 mol H2O in

Nezavi [6.7K]

Answer:

1. 276 g of NO₂

2. 34.8 moles of LiO

3. 4.23×10²⁵ molecules of SO₂

4. 540 g of H₂O

5. 224 g CO

Explanation:

Let's define the molar mass of the compound to define the moles or the grans of each.

Molar mass . moles = Mass

Mass (g) / Molar mass = Moles

1. 6 mol . 46 g / 1 mol = 276 g of NO₂

2. 800 g . 1mol / 22.94 g = 34.8 moles of LiO

3. To determine the number of molecules, we convert the mass to moles and then, we use the NA (1 mol contains 6.02×10²³ molecules)

4500 g . 1mol / 64.06 g = 70.2 moles of SO₂

70.2 mol . 6.02×10²³ molecules / 1 mol = 4.23×10²⁵ molecules of SO₂

4. 30 mol . 18g / 1 mol = 540 g of H₂O

5. 8 mol . 28g / 1mol = 224 g CO

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3 years ago

When a entire species perishes the species becomes

Andrews [41]

When an entire species perishes the species becomes extinct.

6 0

4 years ago

Read 2 more answers

Which of these changes occurs during a nuclear change?

Andrews [41]

The correct answer is D. Elements are created that differ from the reactants.. Because in a eeaction, the product is different than the reactants. Take NaCl for example.

7 0

3 years ago