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vredina [299]
4 years ago
7

20 What is the base-conjugate acid pair when a strong acid is added to methylamine, CH3NH2?

Chemistry
1 answer:
Fed [463]4 years ago
6 0
  The base  conjugate   acid pair  when strong acid is added  to  methylamine  CH3NH2   is

base CH3NH2; conjugate  acid: CH3NH3 +

                 Explanation

When   a base CH3CH2   accept   proton  it  form  its  conjugate  acid  which known as methyl  ammonium  ion. Therefore conjugate  acid  of CH3CH2  is CH3NH3+  ion

For   example  when CH3CH2  react with  HCl

CH3CH2  +HCl 
→ CH3CH3+   +   Cl- 
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. how many lone pairs of electrons are present in the lewis structure of calcium sulfide?
miv72 [106K]
Answer:
            <u>Four</u>

Explanation:
                     Calcium Sulfide is an ionic compound made up of Ca²⁺ and S²⁻.
Ca²⁺ is formed as,

                                   Ca    →    Ca²⁺  +  2 e⁻

These two electrons are accepte by Sulfur as,

                                     S  +  2 e⁻    →    S²⁻

So, before accepting 2 electrons S was having six valence electrons, after accepting two electrons from Ca it has 8 electrons which are present in four pairs as shown below,

7 0
3 years ago
A urine sample has a mass of 147 g and a density of 1.020 g/mL. What is the volume of this sample?
son4ous [18]

So we know that the equation for density is:

D=\frac{m}{V}

where D is the density, m is the mass in grams, and V is the volume in mL.

So since we know two of the variables, mass and density, we can solve for the volume:

\frac{1.020g}{mL}=\frac{147g}{V}

V=\frac{147g}{\frac{1.020g}{mL}}

V=144.12mL

Therefore, the volume of this urine sample is 144.12mL.

5 0
3 years ago
Briefly describe the intermolecular forces present in your unknown
Korvikt [17]

An inter-molecular power is basically an alluring power between neighboring particles. There are three regular sorts of inter-molecular power: lasting dipole-dipole powers, hydrogen bonds and van der Waals' powers.

7 0
3 years ago
Why do you think DNA has had such an impact on forensic science
Nuetrik [128]
Every single person has their own unique DNA so with this, if they find any fingerprints they'll be able to track them down easily
8 0
3 years ago
Read 2 more answers
What is the molarity of 70.6 g C2H6O in 2.25 L of solution
myrzilka [38]

Hey there!

Molar mass C2H6O = 46.0684 g/mol

Number of moles:

n = mass of solute / molar mass

n = 70.6 / 46.0684

n = 1.532 moles

Therefore:

M = number of moles / volume ( L )

M = 1.532 / 2.25

= 0.680 M

Hope that helps!

7 0
3 years ago
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