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IrinaVladis [17]
2 years ago
13

What is the molarity of a 300.0 mL solution containing 25.0 g of NaCl?

Chemistry
1 answer:
Aleks04 [339]2 years ago
8 0

Answer:

1,43 M

Explanation:

molair mass NaCl = 58,44 g/mol

You need to calculate how many moles 25 g is:

25 g / 58,44 g/mol = 0,4278 mol

0,4278 mol / 0,3 L = 1,43 M

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Which element of the third period had the highest first ionization energy?
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Answer:

C.) Argon

Explanation:

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4 0
2 years ago
Which is always going to be the highest ionization energy?
Law Incorporation [45]

Answer: I think it's B.

Explanation:

4 0
1 year ago
Which of the following best describes an empirical formula?
Monica [59]

Answer:

Option C :

a chemical formula that shows the relative number of each type of atom in a molecule, using the smallest possible ratio

Explanation:

Empirical Formula:

Empirical formula is the simplest ration of atoms in the molecule but not all numbers of atoms in a compound.

So,

Tha ration of the molecular formula should be divided by whole number to get the simplest ratio of molecule

For Example

      C₂H₆O₂ Consist of  Carbon (C), Hydrogen (H), and Oxygen (O)

Now

Look at the ratio of these three atoms in the compound

                         C : H : O

                         2 : 6 : 2

Divide the ratio by two to get simplest ratio

                          C : H : O

                         2/2 : 6/2 : 2/2

                             1 : 3 : 1

So for the empirical formula the simplest ratio of carbon to hydrogen to oxygen is 1:3:1

So the empirical formula will be

                     Empirical formula of C₂H₆O₂ = CH₃O

So, Option C is correct :

a chemical formula that shows the relative number of each type of atom in a molecule, using the smallest possible ratio

6 0
3 years ago
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LenaWriter [7]

Answer:

simple

Explanation:

The glow stick's outer plastic tube holds a solution of an oxalate ester and an electron-rich dye along with a glass vial filled with a hydrogen peroxide solution. ... Glow sticks light up when oxalate esters react with hydrogen peroxide to form a high-energy intermediate

5 0
1 year ago
What should the IUPAC name for a binary covalent compound lack ?
zavuch27 [327]
The answer to the question is "B. Roman Numerals"
5 0
3 years ago
Read 2 more answers
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