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stepan [7]
3 years ago
8

Who invented peroidic table

Chemistry
2 answers:
Kruka [31]3 years ago
7 0
<span>Dmitri Mendeleev.
Hope this helps!:)</span>
ch4aika [34]3 years ago
3 0
<span>Dmitri Mendeleev thats the answer</span>
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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
During a physical change water can change it's (blank) but it will not change it's (blank).
Valentin [98]
Water can change it's STATE but it will not change it's COMPOUND.
8 0
3 years ago
The meselson-stahl experiment demonstrated that DNA replication is semi conservative in the figure semi conservative replication
Vlad1618 [11]

Answer:

The correct answer will be option-D.

Explanation:

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7 0
3 years ago
Read 2 more answers
Will Maynez burns a 0.6-g peanut beneath 50 g of water, which increases in temperature from 22°C to 50°C. (The specific heat cap
Neko [114]

Answer:

40% of  the energy release by the peanut is 3500 calories

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Q = mcΔT

where, m is the mass of the object

c is the specific heat capacity

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m = 50 g

ΔT = 50°C - 22°C

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Q = (50)× (1)× (28)

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so,

Q = 1400 calories / 0.4

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7 0
3 years ago
What is the symbol for the element whose atoms have 40 electrons each?
inysia [295]
<span>The symbol for the element whose atoms have 40 electrons each is Zr. This is the element zirconium. In the atoms of a pure element, the number of positively charged protons is normally equal to the number of negatively charged electrons. Hence, the number of electrons in the atom can be inferred from the atomic number, which corresponds to the number of protons in an atom. The atomic number of zirconium is 40.</span>
8 0
3 years ago
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