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lana [24]
3 years ago
13

How much heat is needed to change 47grams of water into ice

Chemistry
1 answer:
Elenna [48]3 years ago
3 0

the answer you are looking for is 4.22 kj.

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13. If a chemist has 12.3 moles of N H 03, what is the mass of the sample?​
user100 [1]

Answer:

209.4831 g

Explanation:

number of moles × molar mass = mass of substance in g

12.3 × ( 14.0067 + 1.00484 × 3 ) = 209.4831 g

3 0
3 years ago
What descriptive term is applied to the type of diene represented by 2,4-hexadiene?.
Varvara68 [4.7K]

The descriptive term applied to the type of diene represented by 2,4-hexadiene is conjugated diene.

Dienes are compounds which contains two double bonds. These dienes can be non conjugated or conjugated.

Conjugated diene are those compound which have two double bonds  joined by a single σ bond. Conjugated dienes can also be called 1,3-diene. To know if diene is conjugated or non conjugated, sp³ hybridization is to b checked and the number of double bonds and single sigma bond is checked.

Conjugated dienes are found in many different molecules. 2,4-hexadiene is a conjugated diene with two carbon-carbon double bonds that are separated by one sigma bond.

The stabilization of dienes by conjugation is better than the aromatic stabilization. Conjugated dienes are more stable than non conjugated or cumulative diene because it has higher electron density of molecules delocalized.

To learn more about conjugated dienes,

brainly.com/question/24261651

#SPJ4

6 0
1 year ago
Hope is testing a substance using blue litmus paper. The paper turns red. The substance is _____.
Aleksandr [31]

Answer:

the substance is an acid

3 0
2 years ago
Read 2 more answers
present day india is in south asia at the northern end of the indian ocean what evidence found in india matches that of other lo
alekssr [168]

Answer:

Lystrosaurus fossils are just found in Antarctica, India, and South Africa. Like the land abiding Cynognathus, the Lystrosaurus would have not had the swimming capacity to navigate any sea. Advanced portrayal of the Glossopteris. Potentially the main fossil proof found is the plant, Glossopteris.

Explanation:

Hope it helps

5 0
2 years ago
1. How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O
Gekata [30.6K]
1. c. 35
2. <span>d. 1.26 x 10^24 molecules 
3. </span><span>d. 303.6 g</span> 
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3 years ago
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