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1 year ago

Which of the following is an empirical formula? H6O2 H402 H2O H2O2

Chemistry

2 answers:

Jobisdone [24]1 year ago

6 0

Answer:

hola responderé

Explanation:

el h2o es agua y el agua es mojada gracias por su atención

topjm [15]1 year ago

5 0

${\qquad\qquad\huge\underline{{\sf Answer}}}$

<h3>What does an empirical formula mean ? </h3>

- Empirical formula represents a molecule with its elements combined in simplest ratio, it's not necessarily same as the form in which the compound really exists in the nature. Hence we can say that empirical formula shows the simple ratios in which atoms combined to form a molecule.

For example : Hydrogen peroxide

- Hydrogen peroxide exists in nature as $\sf H_2O_2$ , which is its molecular formula.

but it's empirical formula will be H0 [ simplest ratio of 1 : 1 ]

Therefore, the correct choice is :

C. $\sf H_2O$

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Consider the half reactions below for a chemical reaction.

Butoxors [25]

Upper M g (s) plus 2 upper H right arrow upper M g (a q) plus upper H subscript 2 (g).

Mg + 2H⁺ → Mg²⁺ + H₂

Explanation:

The net ionic equation is the sum of the oxidation half reactions.

The half-reactions are:

Mg → Mg²⁺ + 2e⁻ Oxidation half reaction

2H⁺ + 2e⁻ → H₂ reduction half reaction

Combining the reactions gives:

Mg + 2H⁺ + 2e⁻ → H₂ + Mg²⁺ + 2e⁻

Since the electrons are balanced, they cancel out of the equation,

This leaves behind;

Mg + 2H⁺ → Mg²⁺ + H₂

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2 years ago

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aleksklad [387]

Explanation:

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2 years ago

What is the proper measurement of the vol-ume represented?1. 2.0 ml 2. 2.500 ml 3. 2.5 ml 4. 2.50 ml?

wel

From the given choices above, the volume that is well represented is the fourth choice, 2.50 mL. This is because there is enough number of significant figures after the decimal point to ensure that there is accuracy in the given values.

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2 years ago

What is the period of a wave with a frequancy of 3 Hz and an amplitude off 0.01

lara31 [8.8K]

0.33 seconds is the period of a wave with a frequency of 3 Hz and an amplitude off 0.01 .

<u>Explanation:</u>

We have , period of a wave with a frequency of 3 Hz and an amplitude off 0.01 . We know that period of a wave is amount of time needed to complete one oscillation . In order to calculate period of wave we use frequency and the formula use is $period = \frac{1}{frequency}$ . We are given that frequency = 3 Hz: