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3 years ago

What is an empirical formula

2 answers:

8 0

A formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

zlopas [31]3 years ago

6 0

An empirical shows the simplest ratio among atoms in a compound .

<h2>More information</h2>

an empirical formula is the simplest formula for a compound .For example, H2O2 can be reduced to a simpler formula.
Determining a Molecular Formula from an Empirical Formula The empirical formula for a compound is P 2 O 5 . Its experimental molar mass is 284 g/mol.
For example, the empirical formula of benzene (C5H5) is Qj, - because the mole ratio of carbon am'hydrogen is 1:1.

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Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H 2O (l) → Ca(OH) 2 (s) In a p

Tomtit [17]

Answer:

The answer to your question is: 81%

Explanation:

Data

CaO = 2 g

Ca(OH)₂ = 2.14 g

Reaction balanced

CaO + H₂O ⇒ Ca(OH)₂

Molecular mass

Calcium oxyde = 40 + 16 = 56 g

Calcium hydroxide = 40 + 2 + 32 = 74 g

Process

Rule of three

56 g of CaO -------------- 74 g of Ca(OH)₂

2 g of CaO ------------- x

x = (2 x 74) / 56

x = 2.64 g of Ca(OH)₂

Percent yield

% Yield = $\frac{2.14}{2.64} x 100$

% yield = 81

8 0

3 years ago

Atoms of Mg combine with atoms of F to form a compound. Atoms of which of the following elements combine with atoms of F in the

Lena [83]

Answer:

Explanation:

Magnesium is the element of second group and third period. The electronic configuration of magnesium is - 2, 8, 2 or $1s^22s^22p^63s^2$

There are 2 valence electrons of magnesium.

Fluorine is the element of seventeenth group and second period. The electronic configuration of fluorine is - 2, 7 or $1s^22s^22p^5$

There is 1 valence electron of fluorine.

They will combine and form $MgF_2$

The same type of compound is formed by the other members of the group 2 since they will have 2 valence electron.

Group 2 includes:- beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

Hence, correct options is:- Ba

5 0

4 years ago

How do I convert/scale a recipe using a t chart

Rina8888 [55]

Answer:

Obtain the conversion factor by dividing the required yield (from Step 2) by the old yield (from Step 1). That is, conversion factor = (required yield)/(recipe yield) or conversion factor = what you NEED ÷ what you HAVE.

Explanation:

6 0

3 years ago

Write the reaction for the weak base co32- in water

Gekata [30.6K]

The weak base carbonate reacts with the water forming bicarbonate and the hydroxide ion.

The weak bases are given as the compounds that have the inability to get completely dissociated in water.

The carbonate is given as the weak base, as in water it remains constituted in the form of a bond with oxygen.

The reaction of water with the carbonate ion is given as:

$\rm CO_3^{2-}\;+\;H_2O\;\rightleftharpoons HCO_3^-\;+\;OH^-$