A substance that has a pH = 7 is a/an

What conversion factor is present in almost all stoichiometry calculations?

luda_lava [24]

<h3><u>Answer;</u></h3>

Molar mass

<h3><u>Explanation</u>;</h3>

Stoichiometry involves the study of quantitative relationships between the amounts of reactants used and products formed by a chemical reaction.
A conversion factor is a ratio of coefficients found in a balanced reaction, which can be used to inter-convert the amount of products and reactants.
Molar ratios, or conversion factors, identify the number of moles of each reactant needed to form a certain number of moles of each product.

8 0

3 years ago

The distance between two adjacent peaks on a wave is called the wavelength. (2pts) a. The wavelength of ultraviolet light is 255

kicyunya [14]

Answer:

a.2.55e-7

b.6830

Explanation:

6 0

2 years ago

Phosphorus oxychloride has the chemical formula POCl3, with P as the central atom. In order to minimize formal charge, how many

Elina [12.6K]

Answer:

Phosphorus makes 5 bonds with other atoms

Explanation:

$POCl_{3}$ has total 32 number of valence electrons (P has 5 , O has 6 and Cl has 7 valence electrons).

These valence electrons are used to draw Lewis structure of $POCl_{3}$ .

Formal charge on an atom = (no. of valence electrons of the atom)-(no. of covalent bonds attached to the atom)-(no. of electrons in lone pair of the atom)

Applying octet rule (atoms have eight electrons in their valence shell) and minimizing formal charge of $POCl_{3}$ , it has been found that P makes total 5 bonds with rest of the atoms.

Lewis structure of $POCl_{3}$ along with formal charge (in parentheses) has been given below.