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romanna [79]
3 years ago
9

On Darwin's tree of life, organisms at the base of

Chemistry
2 answers:
bazaltina [42]3 years ago
7 0
The correct answer is part A
masya89 [10]3 years ago
3 0
B - Evolve into the closest species on the tree’s trunk
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Name the separation technique used to separate the constituents of the mixture of miscible liquids. Draw a labelled diagram of t
julia-pushkina [17]

Answer:

           Distillation

Explanation:

                   Miscible solvents are separated from each other through a process called as Distillation. This technique works on the principle of difference in the boiling point of the solvents that are forming the miscible solution.

Example:

             Water and Ethanol are two miscible solvents. They have different boiling points.

                Ethanol  =  78.37 °C

                 Water  =  100 °C

In a experimental setup attached below, water and ethanol mixture is taken in a round bottom flask and heated on a hotplate. Ethanol having less boiling point than water boils first and evaporates. The Ethanol vapors are condensed as they passes through the condenser. In this way the ethanol is separated first and water having greater boiling point is left behind.

8 0
4 years ago
Which of the following values displays the pH of an acid? <br> A. 3<br> B. 12
tester [92]
A pH of 7 or lower makes something an acid so it would be 3
3 0
3 years ago
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A steel cylinder has a pressure of 550 torr at 177 degrees Celsius. What will be the pressure if the temperature is decreased by
Schach [20]

Answer:

P_2=507.7torr

Explanation:

Hello there!

In this case, when we have a gas that is undergoing a change in both pressure and temperature, we utilize the Gay-Lussac's equation as shown below:

\frac{T_2}{P_2}=\frac{T_1}{P_1}

Thus, since we are given the initial pressure and temperature and the final temperature, we can compute the final pressure as shown below:

P_2=\frac{P_1}{T_1}*T_2

So we plug in, by making sure the temperatures are in kelvins, to obtain:

P_2=\frac{550torr}{(117+273)K}*(87+273)K\\\\P_2=507.7torr

Best regards!

8 0
3 years ago
Dehydrohalogenation of tert-pentyl bromide at higher temperatures will produce 2-methyl-1-butene as the chief product when
salantis [7]

I'm going to suppose you want the adjusted chemical reaction, using the formulas of the compounds. You can see it in the image attached.

6 0
4 years ago
Using the following equation
Valentin [98]
Thermal energy when solid, liquor , and gas combine
7 0
3 years ago
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