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makkiz [27]
3 years ago
10

How are two atoms of the same element alike?

Chemistry
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer:

Explanation:

The nucleus of an atom contains neutrons and protons bonded tightly together. The same chemical element can have a different number of neutrons and still be the same element.

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Which element could provide one atom to make an ionic bond with fluorine? (Hydrogen will not make ionic bonds easily, so do not
Ainat [17]
Any element from group 1 of the Periodic Table.
6 0
3 years ago
A saturated solution of lead(ii) fluoride, pbf2, was prepared by dissolving solid pbf2 in water. the concentration of pb2+ ion i
katrin [286]

Equation :

PbF2 ------> Pb2+ + 2F-

Solubility product is given as:

Ksp = [Pb2+][F-]^2

let x = [Pb2+]

Ksp = x(2x)^2 = 4(x)^3 = 4(2.08*10^-3)^3

Ksp = 3.60*10^-8

8 0
3 years ago
Cobalt-60, with a half-life of 5.0 days, is used in cancer radiation treatments. A hospital purchases a 30.0g supply of it and s
Rudik [331]

Answer:

Bottle is sitting on the shelf for 15 days.

Explanation:

Given data:

Co-60 half life = 5 days

Total amount = 30.0 g

Amount left = 3.75 g

Time taken = ?

Solution:

AT time zero = 30 g

AT first half life= 30g /2 = 15 g

At 2nd half life = 15 g/ 2 = 7.5 g

At 3rd half life = 7.5 g/2 = 3.75 g

Now we will calculate the sitting time of bottle.

Half life = Time taken / number of half lives

3× 5 days = time taken

Time taken = 15 days

Bottle is sitting on the shelf for 15 days.

8 0
3 years ago
What 3 things will you do to dissolve a solid (salt) faster in a liquid (water)
Dmitriy789 [7]

Answer:

There are three ways to make solids dissolve faster: Break the solute into smaller pieces. Stir the mixture. * Heat the mixture.

Explanation:

Substances can dissolve in water three ways—by dissociation, dispersion, and ionization.

6 0
3 years ago
How would you balance this equation HCL+BA-->BaCL2+H2
erik [133]
Put a 2 on the HCl.

2HCl+Ba-->BaCl2+H2
7 0
3 years ago
Read 2 more answers
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