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Alex_Xolod [135]
3 years ago
13

HELP ASAP PLS!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
Rudiy273 years ago
5 0

Answer:correcting errors

Explanation:

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I find that there are 500 atoms of U-235 and 1500 atoms of Pb-207. If we assume the mineral contained only parent and no daughte
swat32

Explanation:

From the question it can be infered that initially only parent atoms were present in the rock and  no daughter atom. So, initially there was only uranium atom and no lead atom. So, in total there were 500+1500= 2000 uranium atom. And no lead tom was there.

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4 years ago
How to name the hydrocarbons? according to IUPAC i guess?​
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hydrocarbons are compounds which contains Hydrogen and carbon

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A bond where the electrons are shared equally is called a(an) ________ bond.
zubka84 [21]
Metallic bonds result when electrons are shared equally.

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4 years ago
V\3. The atomic masses of any two elements contain the same number of _
SashulF [63]

a. atoms

Explanation:

Let's take as example carbon and lead. Carbon have an atomic mass of 12 a.m.u while lead have an atomic mass of 207 a.m.u. Value of atomic masses are the same with as the value of molar masses. So carbon have a molar mass of 12 g/mole while lead have a molar mass of 207 g/mol.

Avogadro's number it tell us that in 1 mole of particular substance there are 6.022 × 10²³ particles. Taking in account this, in 12 g of carbon there are 6.022 × 10²³ carbon atoms and in 207 g of lead there are 6.022 × 10²³ lead atoms atoms.

The atomic mass of any two elements contain the same number of atoms.

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Avogadro's number

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6 0
3 years ago
Which is more concentrated, a solution containing 10g of NaCl in 100 g
Pavel [41]

Answer:

The answer is the solution containing the 90g of water.

Explanation:

Because both solutions have the same amount of the sodium chloride, the concentration would be the same if they both had the same amount of water.

Because the second solution has less water, there is more of the sodium chloride per each drop of water.

I hope this helps :)

4 0
3 years ago
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