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
d1i1m1o1n [39]
3 years ago
13

Need help please !!!!

Chemistry
1 answer:
Margaret [11]3 years ago
3 0

Answer:

2p

Explanation:

it has 3 dumbell shapes, hence p

you can't determine the principal quantum number by looking at the shape, however bigger or spread orbital means higher value of n

You might be interested in
Is a dissolved oxygen level of 15 suitable for fish
Dvinal [7]
Yes, because if its higher than their will be more aquatic life able to live their.
4 0
3 years ago
What is a distinguishing feature about ionic bonds?
Sergeeva-Olga [200]

Answer:

Here:

Explanation:

So ionic bonds are formed due to electrostatic attraction. For example, in NaCl, Na gives an electron to Cl, getting Na+ and Cl- where + and - charges attract and form an ionic bond.

4 0
4 years ago
An aqueous solution of nitric acid is standardized by titration with a 0.110 M solution of calcium hydroxide. If 21.1 mL of base
Mumz [18]

Answer:

\large \boxed{\text{0.195 mol/L}}

Explanation:

(a) Balanced equation

2HNO₃ + Ca(OH)₂ ⟶ Ca(NO₃)₂ + 2H₂O  

(b) Moles of Ca(OH)₂

\text{Moles of Ca(OH)}_{2} = \text{21.1 mL Ca(OH)}_{2} \times \dfrac{\text{0.110 mmol Ca(OH)}_{2}}{\text{1 mL Ca(OH)}_{2}}\\= \text{2.321 mmol Ca(OH)}_{2}

(c) Moles of HNO₃

The molar ratio is 2 mol HNO₃:1 mol Ca(OH)₂

\text{Moles of HNO}_{3} = \text{2.321 mmol Ca(OH)}_{2} \times\dfrac{\text{2 mmol HNO}_{3}}{\text{1 mmol Ca(OH)}_{2}}= \text{4.642 mmol HNO}_{3}

(d) Molar concentration of HNO₃

c = \dfrac{\text{moles of solute}}{\text{litres of solution}}\\\\c = \dfrac{n}{V}\\\\c= \dfrac{\text{4.642 mmol}}{\text{23.8 mL}} = \text{0.195 mol$\cdot$L$^{-1}$}\\\\\text{The molar concentration of the Ca(OH)$_{2}$ is $\large \boxed{\textbf{0.195 mol/L}}$}

8 0
4 years ago
How do you balance these two chemical equations?
Vlada [557]
In order to balance both of the reactions you need to make sure that both sides of the reaction have the same number of atoms for each atom in order to follow conservation of mass.

KCl+F₂→KF+Cl₂
Notice how in the above reaction there are two chlorine atoms on the products side (right side) and only one atom of chlorine on the reactants side (left side).  you want both the reactants and products side to have the same amount chlorine and to do this multiply KCl by 2.  Fluorine however, has 2 atoms on the reactant side and 1 atom on the product side.  to fix this multiply KF by 2. <span>Therefore the balanced reaction is: 2KCl+F₂→2KF+Cl₂
</span>notice how both sides of the reaction have equal numbers of each atom.

Mg+HCl→MgCl₂+H₂
the above reaction has 2 atoms of H on the products side and only 1 atom of H on the reactants side.  That means you have to multiply HCl by 2.  Now you have the equation Mg+2HCl→MgCl₂+H₂. As you can see now we have equal numbers of all the atoms on both sides which means that that is the balanced equation.

I hope this helps.  Let me know if you have any further questions or need anything to be clarified.
6 0
4 years ago
What is the mass of 20.0 L of sulfur dioxide (SO2) at STP?
larisa86 [58]

Answer:

Mass = 57.05 g

Explanation:

Given data:

Volume of SO₂ = 20.0 L

Temperature = standard = 273 K

Pressure = standard = 1 atm

Mass of SO₂ = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm ×  20.0 L / 0.0821 atm.L/ mol.K× 273 k

n =  20.0  / 22.41/mol

n = 0.89 mol

Mass of SO₂:

Mass = number of moles × molar mass

Mass = 0.89 mol × 64.1 g/mol

Mass = 57.05 g

6 0
3 years ago
Other questions:
  • Scientists have many problems that they are working on but are unable to reach a useful solution. There are a number of constrai
    6·1 answer
  • Which of the following mass units is the largest? a) 1 cg b) 1 dg c) 1 mg d) 1 ng
    15·2 answers
  • Which of the following is not an indication of a chemical change?
    7·2 answers
  • In Perugino's Christ Delivering the Keys of the Kingdom to St. Peter, the artist reminds the viewer of the link between Constant
    6·1 answer
  • A railroad car, with a mass of 25,000 kg, is moving north along a track at 4.5 m/s. It has a collision with
    13·1 answer
  • When you add the pH value of a solution to the pOH value of the same
    8·1 answer
  • Someone help me cuz im yk lol
    8·1 answer
  • Which part of the red blood cells can you find hemoglobin​
    11·1 answer
  • Balance Al2O3 + NaOH + H2O = NaAl(OH)4
    15·1 answer
  • LT.3c - REDOX - QUESTION 4The following is a redox reaction. Label all oxidation states anddetermine which element is being oxid
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!