Oxidation numbers are written as ____.

Answers

Answer 1

Answer: they are written as superscripts
(a symbol or a figure)

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QUICK QUESTION: On the Bohr model, how come potassium has 19 electrons in its valence shell if potassium has a K+? Isn’t it suppose to have 18 electrons? I thought that if an ion has a positive charge, the atom has lost electrons. Pls help me I WILL GIVE BRAINLIEST TO THE BEST ANSWER

2Al + 6HCl → 2AlCl3 + 3H2 If 3.0 grams of H2 were produced, how many grams of Al reacted? (Molar mass of Al = 27 g/mol, molar mass of H2 = 2.0 g/mol) ___ grams

Answers

The 2AI + 6HCL = 2ALCL3 + 3H2. of the 3.0 gms of H2 are made.

The values derived from the grams of H2 in production can be used for finding the molar mass of AI of 27.

AI will react and make a 26.8 g of AI as molar mass consists of AI = 27 g / ml and the M of the H2 = 2.0g/ mol gms.

The calculated M of grams is 26.8 rounded to 3g figures.

Learn more about the 2AI + 6HCL = 2ALCL3 + 3H2.

brainly.com/question/14840695.

Answer:

its actually 26.8 rounded to three sig figs

Explanation:

ur welcome

What is required for reactants to form bonds? a. energy output
b. energy input
c. equilibrium
d. exchange reaction

Answers

a. Energy output
since you need to release a certain amount of energy to hit the activation point.

A 0.20-Molar solution of K2CO3 is a better conductor of electricity than a 0.20-Molar solution of KBr. Which of the following BEST explains this observation between the two solutions. *

Answers

Answer:

K2CO3 dissociates more ions than Kr

Explanation:

A solution conducts electricity because of much supply of ions an example is strong electrolytes. A solution contains both positive and negative ions and the ability of these ions to move freely allows them to carry positive and negative charges thereby conducting electricity. A solution such as K₂CO₃ dissociates more ions than KBr, therefore it is a better conductor of electricity. Neutral solutions do not conduct electricity.

Sodium's atomic number is 11. What does this tell you about an atom of sodium?

Answers

This tells us that an atom of sodium contains 11 electrons which is balanced by 11 protons. The atomic mass of the atom is then the sum of the protons and neutrons. If you know the atomic mass of sodium, you can subtract 11 (protons) to get the number of neutrons.

How does a scientific theory compare to a scientific law?

Answers

Answer:

Explanation:

Scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept.

1) 513.4 m to cm
Chemistry

Answers

1 meter is equal to 100 centimeters. This means we would have to do 513.4 times 100 to get our answer. The answer is 51340 centimeters.

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