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kobusy [5.1K]
3 years ago
13

Pls help its really hard to do

Chemistry
2 answers:
baherus [9]3 years ago
6 0

Answer:

Answer: d

Explanation:

plastic is an insulator and metal is a conductor

FinnZ [79.3K]3 years ago
3 0

Answer:

answer d

Explanation:

plastic has low conductivity, metal has high conductifity

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Coffee is<br><br> homogeneous.<br><br> heterogeneous.
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The answer is homogeneous
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Which symbol represents a particle that has the same total number of electrons as S2-?
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The heat capacity of water is 1cal degree'g1 (1 calorie per degree centigrade, per gram). You are given 1 gallon of water at 25
sdas [7]

Answer:

The heat needed to boil 1 gallon of water is 81,490.62 Joules.

Explanation:

Q=mc\Delta T

Where:

Q = heat absorbed or heat lost

c = specific heat of substance

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ΔT = change in temperature of the substance

We have :

Volume of water = V = 1 gal = 4546.09 mL

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mass of water = m = d × V = 1g/mL × 4546.09 mL =  4546.09 g

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ΔT = 100°C - 25°C = 75 °C

9 (boiling pint of water is 100°C)

Heat absorbed by the water to make it boil:

Q= 4546.09 g\times 1 Cal/g^oC\times 75^oC=340,956.75 Cal

1 calorie = 4.184 J

Q=\frac{340,956.75}{4.184} J = 81,490.62 J

The heat needed to boil 1 gallon of water is 81,490.62 Joules.

5 0
2 years ago
Which of the following elements is the smallest?
Gnesinka [82]

Answer:

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Explanation:

3 0
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Read 2 more answers
A chiral amine A having the R configuration undergoes Hofmann elimination to form an alkene B as the major product. B is oxidati
Free_Kalibri [48]

Answer:

The Structure of "B" is alkene.

Explanation:

The compound "A" having R- configuration  and undergoes Hofmann elimination to form an alkene.

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The structure of "A" and"B" is as follows.

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3 years ago
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