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Sedaia [141]
3 years ago
13

When Mendeleev organized the elements by their _________, he noticed the properties of elements repeated.

Chemistry
1 answer:
Mama L [17]3 years ago
4 0
I believe it should be when he arranged the elements by their atomic mass.
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Notice in the picture of sedimentary rocks, there is one layer on top of the other. The oldest rocks are on the bottom of the pi
amm1812

Answer:

A. Superposition

Explanation:

A law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

3 0
3 years ago
The atomic number of gold (Au) is 79, and it has a mass number of 197. How many electrons are present in each atom of gold?
aliya0001 [1]
There would be 79 electrons present in each atom of gold. I hope this helps :)
8 0
3 years ago
If you can solve both<br> Will mark brainly<br> ASAP
Mariulka [41]

Answer:

1. answer is subcutaneous tissue 2. answer is spleen

Explanation:

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7 0
2 years ago
Read 2 more answers
True or false weight is affected by gravity
bazaltina [42]

true, in a stronger gravitational field the weight will be larger.

6 0
3 years ago
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In an experiment, 16.8 g of k2so4 was dissolved in 1.00 kg of water to make a solution. the freezing point of the solution was m
Mashutka [201]
Answer is: V<span>an't Hoff factor (i) for this solution is 2,26.
</span>Change in freezing point from pure solvent to solution: ΔT =i · Kf · m.
<span>Kf - molal freezing-point depression constant for water is 1,86°C/m.
</span>m -  molality, moles of solute per kilogram of solvent.
n(K₂SO₄) = 16,8 g ÷ 174,25 g/mol
n(K₂SO₄) = 0,096 mol.
m(K₂SO₄) = 0,096 mol/kg.
ΔT = 0,405°C.
i = 0,405 ÷ (1,86 · 0,096)
i = 2,26.

8 0
3 years ago
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