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Tpy6a [65]
4 years ago
7

6) When a substance such as ice melts, its temperature increases. Describe what happens to the arrangement of the water molecule

s as the temperature increases
Chemistry
1 answer:
Vinvika [58]4 years ago
4 0
When temperature increases, there is more energy in a substance. For example, when water boils, more energy is produced. The arrangement of molecules in a solid are closer together and more packed, while the arrangement of molecules in a liquid are father apart and less packed.
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In an aqueous solution which substance yields hydrogen ions as the only positive ion *
GenaCL600 [577]
The question is incomplete. Complete question is
<span>In an aqueus solution, which substance yields hydrogen ions as the only positive ions in the solution? 1)NaH 2)HCOOH 3)LiOH 4) CH3CH2OH?
.............................................................................................................................
Answer: Correct answer is option 2, HCOOH

Reason: 
HCOOH is a formic acid. When mixed in water, it undergoes dissociation which can be represented as

HCOOH         </span>↔           HCOO-       +            H+

The compound NaH, will generate hydride ion (H-), while LiOH is an ionic compound, hence when dissolved in water it generated OH- ions. The compound CH3CH2OH is named as ethyl alcohol. This compound donot dissociate in aqueous medium. 
7 0
4 years ago
Calculate the atomic radius, in nm, of the BCC Metal above utilizing the density and the atomic weight provided by examination b
andre [41]

Answer:

radius = 0.2195 nm

Explanation:

l = 2r

r = 0.439/2 = 0.2195

7 0
3 years ago
Please help me! I don't understand this at all. All the info is in the picture. Thank you so much!!!
kykrilka [37]

Answer:

H₂S + Cl₂ —> S + 2HCl

Explanation:

? + Cl₂ —> S + 2HCl

To balance the equation above, we must recognise what atoms are present in the products.

The products contains S, H and Cl.

Thus, S, H and Cl must also be present in the reactants.

Considering the equation given above, we can see clearly that H and S is missing in the reactants.

H and S together as a compound is expressed as H₂S.

Now, we shall input H₂S into the equation to obtain the complete equation. This is illustrated below:

? + Cl₂ —> S + 2HCl

H₂S + Cl₂ —> S + 2HCl

Next, we shall verify to see if the equation is balanced.

There are 2 atoms of H on both sides of the equation.

There are 2 atoms of Cl on both sides of the equation.

1 atom of S exist on both sides of the equation.

Thus, the equation is balanced.

3 0
3 years ago
1. Convert 2.5 L at 105 kPa to its new volume at 40.5 kPa.
kirill115 [55]

Answer:

.9642 kPa

Explanation:

7 0
3 years ago
Citric acid is mostly<br> acid that can kill your body and make water turn into poison or toxic
Alja [10]
Citric acid is not harmful to the body
6 0
3 years ago
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