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hjlf
3 years ago
14

Which of the following is not an essential element for healthy plant growth?

Chemistry
1 answer:
GREYUIT [131]3 years ago
8 0

Answer:

A oxygen

Explanation:

For plant growth nitrogen, potassium and phosphorous are the three main elements needed. oxygen is expelled from plants. Plants doesn't need oxygen

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The balanced equation for the combustion of Hexane,C6H14 , is
shusha [124]

Answer:

2C _{6}H _{14} +  19O _{2}→12CO _{2} +14H _{2} O

3 0
3 years ago
I NEED HELP PLEASE! :)
riadik2000 [5.3K]

Answer:

C_{21} H_{23} NO_{5}

Explanation:

First thing is we have assume all the percents are grams so we have

68.279g C, 6.2760g H, 3.7898g N, and 21.656g O

Now convert each gram to moles by dividing the the molar mass of each element

68.279g/12.01g= 5.685 moles of C

6.2760g/1.01g= 6.214 moles of H

3.7898g N/14.01g= 0.271 moles  of N

21.656g O/ 16.00g= 1.354 moles of O

Now to find the lowest ratios divide all the moles by the smallest number of moles you found, in our case, the smallest moles is 0.271 moles of N so divide everything by that....

5.685 moles/0.271 moles ------> ~21 C

6.214 moles/0.271 moles --------> ~23 H

0.271 moles  / 0.271 moles  ---------> 1 N

1.354 moles/ 0.271 moles ----------> ~5 O

So the empirical formula is C21H23NO5 C_{21} H_{23} NO_{5}

5 0
3 years ago
Please help!! Why is the following Electron Configuration incorrect for Aluminium?
Margarita [4]

Answer:

3s^1 would be 3s^2

Explanation:

5 0
3 years ago
A plasma that has particles that never collide frequently enough to exchange kinetic energy and never reach a temperature equal
Stels [109]

Answer:

For comprehension, the question is written properly with options attached below:

plasma that has particles that never collide frequently enough to exchange kinetic energy and never reach a temperature equal to the surroundings is categorized as:

A. a thermal plasma.

B. ionized plasma.

C. low density plasma

D. nonthermal plasma.

The correct answer to the question above is "Option D (nonthermal plasma.)"

Explanation:

Plasma, for example radiant sun are state of matter made up of atoms where the ions move freely, there are composed of photons and free electrons but the positive and negative ions are equal creating a swirling gas of positive ions and negative electron and they are also good conductors of electricity as their charged particles move.

Unlike thermal plasmas that ensure their temperature is equal to their surroundings, non-thermal plasma, is not in equilibrium with its surrounding., in other words, non-thermal plasma never reaches temperature that is equal to their surroundings. They can be formed by electrifying electromagnetic waves.

6 0
4 years ago
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What is the colligative property that means a solution typically has a measurably highter boiling point than a pure solvent alon
Arlecino [84]
<span>B) Boiling point Elevation states a solution typically has a measurably higher than a pure solvent . So would be B. </span>
3 0
3 years ago
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