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guajiro [1.7K]
3 years ago
12

Match the element with its description. Match Term Definition Lithium A) Highly reactive gas Lead B) Nonreactive gas Fluorine C)

Malleable, soft, and shiny Krypton D) Opaque solid with higher density
Chemistry
1 answer:
eduard3 years ago
6 0

Lithium - Malleable, soft, and shiny

Lead - Opaque solid with higher density

Fluorine - Highly reactive gas

Krypton - Nonreactive gas

*<em>hope I helped :)</em>*

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pls help!!! Calculate the pH of a solution with a H+ ion concentration of 2.6 x 10^-7 and round your answer to the nearest hundr
earnstyle [38]

Answer:

6.59

Explanation:

pH=-log[H+]

=-log[2.6×10^-7]

=6.59

8 0
3 years ago
. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not
morpeh [17]

Answer:

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4 0
3 years ago
How many moles of KNO3 are in 500 mL of 2. 0 M KNO3? mol KNO3.
8090 [49]

The moles can be defined as the mass of the substance with respect to molar mass. The moles of potassium nitrate is 1 mol.

<h3>How to calculate moles of a substance?</h3>

The moles of a compound can be calculated from:

\rm Moles=\dfrac{Mass}{Molar\;mass}

The molarity can be defined as the moles of solute in a liter of solution.

The molarity can be expressed as:

\rm Molarity=\dfrac{Moles\;\times\;1000}{Volume\;(mL)}

The molarity of potassium nitrate solution is 2 M, and the volume is 500 mL.

The moles of potassium nitrate is given as:

\rm 2\;M=\dfrac{Moles\;\times\;1000}{500\;mL}\\ Moles=\dfrac{2\;\times\;500}{1000}\;mol\\ Moles=1\;mol

The moles of potassium nitrate in 2 M, 500 mL solution are 1 mol.

Learn more about moles, here:

brainly.com/question/15209553

4 0
2 years ago
Which set of properties distinguishes potential energy from kinetic energy?
fenix001 [56]
Kinetic energy is energy possessed by a body by virtue of its movement.

Potential energy is the energy possessed by a body by virtue of its position or state.


3 0
4 years ago
Explain how scientists know the oxygen level in the atmosphere has changed because of plants. Could our atmosphere still be chan
alukav5142 [94]

Answer:

Kya hova be Tera question koi nahi btaye ga

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