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3 years ago

Oxygen is a diatomic element.why give reason.

Chemistry

1 answer:

aliya0001 [1]3 years ago

7 0

Answer:

Diatomic molecules contain two atoms that are chemically bonded. If the two atoms are identical, as in, for example, the oxygen molecule (O2), they compose a homonuclear diatomic molecule, while if the atoms are different, as in the carbon monoxide molecule (CO), they make up…

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How many grams of oxygen are needed to react with 4.6 grams of titanium(IV) chloride

velikii [3]

The answer is: 0.78g

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3 years ago

What must differ beween the atom of two different elements?

kodGreya [7K]

The number of protons must differ between two different elements

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4 years ago

Read 2 more answers

A certain metal oxide has the formula MO where M denotes the metal. A 61.16−g sample of the compound is strongly heated in an at

Reptile [31]

Answer:

the metal is Cadmium (Cd), the oxide is Cadmium oxide (CdO)

Explanation:

<u>Step 1:</u> The equation

mMO ⇔ mM + mO

<u>Step 2: </u>calculating mass

Given is the mass of the metaloxide (61.16g) and the mass of the metal, since the oxygen was removed (53.54g)

The mass of the oxide can be calculate by:

mO = mMO - mM

mO = 61.16 - 53.54 = 7.62g

<u>Step 3:</u> Calculating moles oxide

mole = mass/ molar mass

mole = 7.62g / 16g/mole = 0.47625 mole

<u>Step 4:</u> moles metal

For 1 mole O2 we will have 1 mole metal

so we have 0.47625 moles of metal

<u>Step 5:</u> Calculating molar mass of metal

Molar mass = mass / moles

Molar mass = 53.54g / 0.47625 mole

Molar mass = 112.41 g/mole

If we look at the periodic table ⇒ Cadmium has a molar mas of 112.41 g/mole

So the metal is Cadmium (Cd), the oxide is Cadmium oxide (CdO)

6 0

3 years ago

A solution of a weak acid was tested with the following indicators and the colors noted: Methyl Violet - violet Thymol Blue - ye

blsea [12.9K]

pH ranges depending on the solution, for a solution with weak acid pH will be between 4.0-7.0.

pH is helps to determine if a solution is acidic or basic in nature.

A pH meter is the instrument that can be used for the measurements.

Methyl orange is used when titrating a strong acid against a weak base.

Therefore, the pH of the solution which is a weak acid will be between 4.0-7.0.

Learn more on pH level here,

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3 years ago

A chemist measures the solubility of lead(ii) bromide in water to be 2. 96 g/l. calculate the ksp value for the solid. the ksp v

Julli [10]

The solubility product, ksp of PbBr₂ is 2.102 × 10⁻⁶

<h3>What is solubility?</h3>

The solubility of a solute is defined as the maximum amount of that solute that can be dissolved in a known quantity of solvent at a given temperature.

<h3>What is a solubility product? </h3>

Some salts are sparingly soluble in a solvent. For them, we calculate the solubility product.

It is an equilibrium constant that defines the relationship between a solid and its respective ions in an aqueous solution in equilibrium.

The greater the solubility product, the greater the solubility and vice versa.

Here, the solubility of PbBr₂ = 2.96 g/l

Molar solubility of PbBr₂ = $\frac{2.96}{molar mass of PbBr_2}$ = 2.96/367 = 8.07 × 10⁻³

At equilibrium,

$PbBr_2\rightarrow Pb^{2+} + 2Br^-$

1 mole of PbBr2 dissociates into 1 mole of Pb²⁺ ions and 2 moles of Br⁻

Let the molar concentration of Pb²⁺ be x, then the molar concentration of Br⁻ is 2x

Ksp = x.(2x)²

= 4x³

Substitute, x = 8.07 × 10⁻³

Ksp = 4 (8.07 × 10⁻³)³

= 2.102 × 10⁻⁶

Thus, The ksp of PbBr₂ is 2.102 × 10⁻⁶

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2 years ago

Oxygen is a diatomic element.why give reason.​

Oxygen is a diatomic element.why give reason.