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xeze [42]
3 years ago
5

Which element is the most reactive? - Sodium - Nickel - Carbon -Oxygen

Chemistry
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .

Explanation:

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On many common appliances, there is an “O” or “I” on the power switch. What does each symbol mean?
Art [367]

"I" symbol means the current goes through the system (imagine the 'I' being a line, like a circuit connecting [power to the device]) "O" symbol means the current does not go through the system. ( the circle is an open circuit, having no power flowing through it
3 0
3 years ago
Calculate the number of moles in 456 grams of lead, Pb
Kamila [148]
Mass 456
relative mass 82
moles
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8 0
2 years ago
Why does copper give off blue light and lithium give off red light?
slava [35]
Because each element has an exactly defined line emission spectrum, scientists are able to identify them by the color of flame they produce.
5 0
3 years ago
A 4.27 g sample of a lab solution contains 1.81g of acid. What is the concentration of the solution as a mass percentage?
vaieri [72.5K]

Answer:

42.38875878%

Explanation:

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5 0
2 years ago
What quantity in moles of HCl are there in 35.0 mL of 0.350 M HCl?
marta [7]

Answer:

0.0123 moles

Explanation:

Concentration = Moles / Volume of solution

or you can rearrange the formula to get

Moles = concentration (moles/liter)  x  volume of solution (liter)

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moles = 0.0123

5 0
2 years ago
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