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2 years ago

5

Write the balanced equation for the ionization of the weak base pyridine

1 answer:

anyanavicka [17]2 years ago

8 0

We can’t see the choice

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Describe an acid or base in terms of its relationship to protons

motikmotik

Acids are donors of protons (H+) and bases are acceptors of protons.
For example:
1) hydrochloric acid (HCl) in reaction with water give one proton to water and become chloride anion (Cl-).
2) ammonia (NH3) Is base, in reaction with water accepts one protone and become ammonium cation (NH4+).

4 0

2 years ago

A chemist has 3.55x1022 molecules of nitrogen monoxide. How

Alina [70]

Answer:

<h2>0.059 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...$

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0

2 years ago

Calculate the number of moles in 456 grams of lead, Pb

Kamila [148]

Mass 456
relative mass 82
moles
mass = rm x moles
456/82 = 5.5609756....

8 0

2 years ago

Please help me on 9 and 10

Fantom [35]

C and A because the product of a matter will always be the same and just google A.

4 0

2 years ago

A racehorse completes the Kentucky Derby, a distance of 1.25 miles, in

forsale [732]

Answer:

D. 60.3 kilometers per hour

Explanation:

Hello,

In this case, we first compute the miles in kilometres:

$1.25miles*\frac{1.60934km}{1mile} =2.012km$

Then the minutes in hours:

$2.00min*\frac{1h}{60min}=0.033h$

Finally, the velocity:

$v=\frac{2.012km}{0.033h}\\ \\v=60.3km/h$

Thus, answer is D. 60.3 kilometers per hour

Best regards.

4 0

2 years ago