1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ksivusya [100]
3 years ago
9

Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.Magnesium

(Mg): 1s22s22p63s2
Chemistry
2 answers:
ser-zykov [4K]3 years ago
7 0

Answer:

10 core 2 valence

Explanation:

i just did this question on edgenuity

andrey2020 [161]3 years ago
3 0

Answer:

10 core electrons 2 valence electrons

Explanation:

You might be interested in
Iron is extracted from its ore (hematite) in the blast furnace. Which gas is produced as a waste product?
Diano4ka-milaya [45]

Answer:

CO2

Explanation:

CO2 or carbon dioxide is produced when iron is extracted from its ore. Carbon monoxide Co is used as reducing agent in iron extraction. In this reaction iron ore is reduced to iron and CO is oxidized to CO2 or carbon dioxide which is released in the process. There extraction of iron is redox reaction.

4 0
3 years ago
Heating by direct contact between particles is called ____________​
nataly862011 [7]

Answer:

conduction

Explanation:

Conduction is the transfer of heat between substances that are in direct contact with each other. ... Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them.

3 0
2 years ago
Write the balanced chemical equation between H2SO4 and KOH in aqueous solution. This is called a neutralization reaction and wil
emmainna [20.7K]

Answer:

0.166M

Explanation:

In a neutralization, the acid, H₂SO₄, reacts with a base, KOH, to produce a salt, K₂SO₄ and water. The reaction is:

H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

To solve this problem, we need to determine moles of H2SO4 and moles of KOH that reacts to find the moles of sulfuric acid that remains after the reaction:

<em>Moles H2SO4:</em>

0.650L * (0.430mol /L) = 0.2795moles H2SO4

<em>Moles KOH:</em>

0.600L * (0.240mol / L) = 0.144 moles KOH

Moles of sulfuric acid that reacts with 0.144 moles of KOH are:

0.144 moles KOH * (1mol H2SO4 / 2 mol KOH) = 0.072 moles of H2SO4 react.

And remain:

0.2795moles H2SO4 - 0.072moles H2SO4 = 0.2075 moles of H2SO4 reamains.

In 0.650L + 0.600L = 1.25L:

Molar concentration of sulfuric acid:

0.2075 moles of H2SO4 / 1.25L =

<h3>0.166M</h3>
7 0
2 years ago
Which of the following statements are true about elements and compounds?
Leto [7]
The answer is d hope this helps
3 0
3 years ago
What is waste good for?
harkovskaia [24]
A because that honestly just makes the most sense
6 0
2 years ago
Other questions:
  • What is a measure of the amount of matter in an object? A). density B). mass C). gravity D). weight
    11·2 answers
  • What did J.J. Thomson discover about the atom that changed the atomic model previously used?
    7·1 answer
  • What are all planets that have rings
    13·2 answers
  • The (triangle)Hrxn of formation of carbon dioxide is negative. Which statement is true? The reaction is endothermic. The reactio
    10·2 answers
  • Calculate the OH for a solution that is pH 6.47
    15·1 answer
  • The higher the hydronium ion concentration of a solution, the ____ its pH.
    12·2 answers
  • A 500.0 g sample of aluminium, I initially at 25.0 degrees, absorbs heat from its surroundings and reaches a final temperature o
    5·1 answer
  • Question 12 (1 point)
    8·1 answer
  • Allison is analyzing the fracture pattern of a window. She sees that the fracture lines encircle the point of impact. What type
    12·1 answer
  • 2. Differentiate the types of tectonic plates.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!