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lord [1]
2 years ago
6

Choose the BEST answer from the four options A, B, C, or D: Due to which property of LPG are we asked to close the valve of the

gas cylinder, in the kitchen in our homes? A. It is inflammable B. It is a liquid C. It has a bad smell D. It is a mixture
Chemistry
1 answer:
Mama L [17]2 years ago
4 0

Answer:

A

Explanation:

We are usually asked to close the valve of the gas cylinder in our various kitchens at home <u>due to the inflammable property of the Liquified Petroleum Gas.</u>

<em>Without closing the valve, the LPG would diffuse into our homes, and any form of spark would cause an explosion and lead to a fire. Lives and properties could be lost in the process.</em>

The correct option is A.

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_________ is the movement of materials across a cell membrane using cellular energy.
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Answer:

active transport

Explanation:

passive transport does not involve energy

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2 years ago
Draw the structure for the ring compounds with formulas C6H12 and C6H6
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3 years ago
How many electrons will each element gain or lose in forming an ion?
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8 0
3 years ago
Help! What did I do wrong??
iogann1982 [59]

The molecules  of hydrogen gas that are  formed is  when 48.7 g  of sodium are added to water  is  6.375  x 10²³  molecules


  <u><em>calculation</em></u>

2 Na +2H₂O →  2 NaOH  +H₂

Step 1: find the moles  of sodium (Na)

moles =mass÷   molar mass

from periodic table the molar mass of Na = 23 g/mol

moles= 48.7 g÷ 23 g/mol =2.117 moles

Step 2:use the mole ratio to determine  the  moles of H₂

  from  given equation  Na:H₂ is 2:1

therefore the moles  of H₂ = 2.117 moles x 1/2=1.059 moles

Step 3: find the molecules of H₂ using the Avogadro's law

According  to  Avogadro's  law  1 mole = 6.02 x 10²³ molecules

                                                      1.059 moles = ?  molecules

by cross multiplication

= [(1.059 moles x 6.02 x10²³  molecules) /  1 mole] =6.375  x 10²³  molecules

4 0
3 years ago
Which of the following systems has the highest entropy?. . . A cup of ice at 0 degrees C. . A cup of water at 50 degrees C. . A
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Entropy is a measure of chaos or disorder in a system. For the first one, the system with the highest entropy is a cup of water at 0 degress centigrade.  For the second question, the system with the lowest entropy is  sugar crystals in 95 degrees centigrade cup of coffee. 
4 0
3 years ago
Read 2 more answers
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