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
FromTheMoon [43]
3 years ago
9

Which of the following of the following is the same for both hydrogen and potassium ?

Chemistry
1 answer:
Alex3 years ago
3 0
The answer is C. number of valence electrons. see, both pottassium and hydrogen are in group one and the group they are in shows the amount of valence electrons. hope this helped you
You might be interested in
Using the periodic table, complete the table to describe each atom. Type in<br> your answers.
sladkih [1.3K]
Where's the image?


please enter a image below so I can help.
5 0
2 years ago
Increasing the concentration of a reactant shifts the position of a chemical equilibrium towards formation of more products. wha
Natalija [7]
<h2>The required "option is e)".</h2>

Explanation:

  • The Rate of formation of products depends on the concentration of reactants or the forward reaction increases on increasing the rate of the concentration.
  • There is no effect on the equilibrium rate when the concentration of reactants and products is constant.
  • Forward reaction slows down when the reactant concentration is decreased.
  • On increasing the amount or concentration of reactant the chemical  equilibrium shifts towards formation of more products.
  • Hence, the forward reaction speeds up.
4 0
3 years ago
How many moles of H2 can be made from complete reaction of 3.0 moles of Al?
tresset_1 [31]

Answer: 4.5 moles of H_{2} can be made from complete reaction of 3.0 moles of Al.

Explanation:

The given reaction equation is as follows.

2Al + 6HCl \rightarrow 2AlCl_{3} + 3H_{2}

This shows that 2 moles of Al reacts with 6 moles of HCl. So, the amount of HCl required to react with 1 mole Al is three times the amount of HCl.

Therefore, 3 moles of Al will react with 9 moles of HCl to give 3 moles of AlCl_{3} and \frac{9}{2} moles of H_{2}.

The reaction equation now will be as follows.

3Al + 9HCl \rightarrow 3AlCl_{3} + \frac{9}{2}H_{2}

The moles \frac{9}{2} can also be written as 4.5 moles.

Thus, we can conclude that 4.5 moles of H_{2} can be made from complete reaction of 3.0 moles of Al.

6 0
3 years ago
How many moles of aluminum oxide al2o3 are in a sample with a mass of 204.0
erik [133]

Answer:

2 moles

Explanation:

Let us first start by calculating the molecular mass of Al₂O₃.

The mass of a mole of any compound is called it's molar mass. 1 molar mass 6.02 X 10²³, or Avogadro's number, of compound entities.

Say, 1 mole of Al₂O₃ has 6.02 X 10²³ of Al₂O₃ molecules/atoms. It also has 2*6.02 X 10²³ number of Al atoms and 3*6.02 X 10²³ number of O atoms.

Molecular mass of Al : 26.981539 u

Molecular mass of O: 15.999 u

Therefore, molecular mass of Al₂O₃ is:

= (2*26.981539) + (3*15.999) u

= 101.960078 u

This can be approximated to 102 u.

1mole weighs 102 u

So, 2moles will weigh 2*102 = 204 u

3 0
3 years ago
Read 2 more answers
In Chemistry, to be classified as an organic substance, a substance must contain
Natasha_Volkova [10]
I'm going on a limb here, but Carbon is a definite. <span />
4 0
3 years ago
Other questions:
  • Which statement correctly describes the rate of decomposition of SO3 at equilibrium?
    15·1 answer
  • The way metals surface reflects light is called
    7·2 answers
  • An atom of which element has the strongest attraction for the electrons in a bond?
    5·2 answers
  • a problem or issue in a human or natural environment caused by chemical reactions. Plz give me the URL as well.
    9·1 answer
  • Suppose you believe your unknown compound is NaOH, and you prepare 20 mL of a 0.1 mol/L solution of it. The stockroom provides a
    9·1 answer
  • According to the kinetic theory of gases
    15·1 answer
  • How is energy produced in the sun core
    14·2 answers
  • Which term refers to the sum of the kinetic energy of all the particles in an object? O A. Heat O B. Potential energy O C. Therm
    11·1 answer
  • A person rides in an elevator.
    5·2 answers
  • Why should we try to use less oil, natural gas and electricity?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!