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sergij07 [2.7K]
4 years ago
14

Which statement best describes elements ?

Chemistry
1 answer:
umka2103 [35]4 years ago
6 0
B is the right one. They aren't compounds, which is a mix of two elements. 
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PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE H
Goryan [66]
100 m = 0.1 km
9.58 sec = 9.58/3600 = 0.00266 hr
Speed = 0.1/0.00266= 37.6 km/hr
Can you mark it brainliest?
4 0
3 years ago
If the absorbance of a KMnO4 solution of unknown concentration is 0.633, calculate the concentration of KMnO4 in the solution.
solong [7]

The molar Concentration of KMnO₄ is 0.000219 M

Concentration is the abundance of a constituent divided by means of the overall extent of an aggregate. numerous styles of mathematical description may be outstanding: mass awareness, molar awareness, variety concentration, and quantity awareness.

y is absorbance

x is the molar concentration of KMnO_4

y = 4.84E + 03x - 2.26E - 01

0.833 = 4.84 * 10⁺⁰³ x - 2.26 * 10⁻¹

1.059 = 4.84 * 10⁺⁰³ x

X = 0.000219 M

Hence, The molar Concentration of KMnO₄ is 0.000219 M

Learn more about concentration here:-brainly.com/question/14469428

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3 0
2 years ago
How many moles in 16.012 g
Ber [7]

Explanation:

2.658x 10 to the 23 power

5 0
3 years ago
For acidic solutions, which element is added to balance half-reactions
mina [271]
For balancing acidic solutions, we would need to add H+ ions to the correct side of the equation to balance the total number of atoms and the overall charge.
6 0
4 years ago
Read 2 more answers
Help!!! Acids and Bases
valentina_108 [34]
ACID: A substance that accepts a lone pair of electrons

BASE: A substance that donates a lone pair of electrons

:D
4 0
3 years ago
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