En la reacción química. NaHCO3 + HCl → CO2 + NaCl + H2O Cuando reaccionan 56 g de NaHCO3 los g de CO2 liberados son: Nota: Solo escribir el valor numérico, sin unidades y dos lugares después del punto.

29.34

Explanation:

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:            84.01                                 44.01

             NaHCO₃ +  HCl ⟶ NaCl  +  CO₂  +H₂O

m/g:           56

To solve a stoichiometry problem, you must  use the molar

1. Moles of NaHCO₃

2. Moles of CO₂

The molar ratio is 1 mol CO₂:1 mol NaHCO₃

3. Mass of CO₂

Note: The answer can have only two significant figures because that is all you gave for the mass of NaHCO₃.

b is the correct

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms