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Likurg_2 [28]
3 years ago
14

Match the scenario to the unit of measure that is needed.

Chemistry
1 answer:
alekssr [168]3 years ago
5 0
Is there supposed to be a practice?
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If a car is going at a speed of 36 km/hr. what is the speed in m/s
blsea [12.9K]

To convert km/h into m/s = 5/18


36×5/18


10 m/s

8 0
4 years ago
Design a synthesis of 2-bromo-1-chloro-4-nitrobenzene from benzene or any mono-substituted benzene. Part 1 out of 6 choose the b
Oxana [17]

2-bromo-1-chloro-4-nitrobenzene  is being synthesized in following sequence:

Step 1: Chlorination of Benzene:

                                                     This is Halogenation reaction of benzene. In this step benzene is reacted with Chlorine gas in the presence of lewis acid (i.e. FeCl₃). This results in the formation of Chlorobenzene as shown in red step below.

Step 2: Nitration of Chlorobenzene:

                                                          The chlorine atom on benzene has a ortho para directing effect. Therefore, the nitration of chlorobenzene will yield para nitro chlorobenzene as shown in blue step below.

Step 3: Bromination of 1-chloro-4-nitrobenzene:

                                                                               In this step bromination is done by reacting bromine in the presence of lewis acid. The chlorine being ortho para directing in nature and nitro group being meta directing in nature will direct the incoming Br⁺ (electrophile) to the desired location. Hence, 2-bromo-1-chloro-4-nitrobenzene is synthesized in good yield.

6 0
3 years ago
5/10
julsineya [31]

Answer:

B.

Explanation:

This is physical change as the popcorn has expanded in size.

4 0
3 years ago
Read 2 more answers
Siya saw two elements X and Y. Element X is shiny and hard, while element Y is dull and
ExtremeBDS [4]

Answer:element x

Explanation:because element x is shiny and hard and that's a property of metals and metals are good conductors of heat and electricity

3 0
3 years ago
What is the osmotic pressure of a solution of FeCl3(aq) in which 69.5 g of FeCl3(s) (molar mass = 162.20 g mol-1) are dissolved
ivolga24 [154]

The osmotic pressure of the solution is 25.48atm

Data;

  • Mass = 69.5g
  • Molar mass = 162.20g/mol
  • Volume = 2.35L
  • Temperature = 35.0^oC
<h3>Osmotic Pressure</h3>

The osmotic pressure of the solution is calculated as

\pi = iMRT

  • i = Vant Hoff Factor
  • M = molarity
  • R = gas constant
  • T = Temperature

The Vant hoff factor of the factor = 4

Let's calculate the molarity of the solution;

M = \frac{number of moles}{volume}

Number of moles = mass / molar mass

n = \frac{mass}{molar mass} \\

substitute the values into the formula and solve for it

n = \frac{69.5}{162.20} \\n = 0.428 moles

The molarity of the solution is calculated as

M = \frac{number of moles}{volume} \\M = \frac{0.428}{2.35} = 0.182 mol/L

The osmotic pressure of the solution is calculated as

\pi = iMRT\\\pi = 4 * 0.182 * 35\\\pi = 25.48 atm

The osmotic pressure of the solution is 25.48atm

Learn more on osmotic pressure here;

brainly.com/question/8195553

5 0
2 years ago
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