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Len [333]
3 years ago
7

If energy increasing or decreasing as you go from a solid to a liquid

Chemistry
2 answers:
Gelneren [198K]3 years ago
8 0
The energy increases because the molecules in water move faster
yulyashka [42]3 years ago
6 0
I believe the energy decreases
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Need asap thank you
cupoosta [38]

Answer:

c.boron-11

Explanation:

The atomic mass of boron is 10.81 u.

And 10.81 u is a lot closer to 11u than it is to 10u, so there must be more of boron-11.

To convince you fully, we can also do a simple calculation to find the exact proportion of boron-11 using the following formula:

(10u)(x)+(11u)(1−x)100%=10.81u

Where u is the unit for atomic mass and x is the proportion of boron-10 out of the total boron abundance which is 100%.

Solving for x we get:

11u−ux=10.81u

0.19u=ux

x=0.19

1−x=0.81

And thus the abundance of boron-11 is roughly 81%.

6 0
2 years ago
Which one of the following is a base?<br>A. HCI <br>B.Cu(OH)2 <br>C.HNO3 <br>D.HC2H3O2​
DedPeter [7]

Answer:

b. Cu(OH)2

Explanation:

As it is having Hydroxil ions(OH).

5 0
3 years ago
Read 2 more answers
WILL MARK BRAINIEST <br><br> Can someone please help me understand this?
Mila [183]

To convert from moles to grams you divide by the molar mass of the element. To convert from grams to moles you X by the molar mass element

5 0
3 years ago
Solid solutions where one metal is dissolved in another is known as a(n) _____________.
krok68 [10]

Answer:

ionic solution

Explanation:

when is dissleves its ionic

8 0
3 years ago
Mendeleev created this table as he noticed that a
Nimfa-mama [501]

Answer:

Mendeleev had left the noble gases out of his periodic table.

Explanation:

Mendeleev's periodic table is pictured in the image attached to the question.

Mendeleev's table obviously lacked the noble gases. The reason for this grave omission is simple; the noble gases were not known as at the time when he formulated his periodic table. There weren't any known elements  whose properties were similar to the  properties of the noble gases. This would have lead him to suspect their existence.

4 0
2 years ago
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