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3 years ago

A substance that permits the flow of electrons is a(n a. conductor b. insulator

Chemistry

2 answers:

Rainbow [258]3 years ago

5 0

(A)Conductor permits the flow of electrons.

natta225 [31]3 years ago

3 0

The answer to this would be A.

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While heating up a 25 gram sample of concrete (specific heat = 0.210-cal/g°C), your initial tempărature is room temperature (25°

Lana71 [14]

Answer:

Final temperature = 83.1 °C

Explanation:

Given data:

Mass of concrete = 25 g

Specific heat capacity = 0.210 cal/g. °C

Initial temperature = 25°C

Calories gain = 305 cal

Final temperature = ?

Solution:

Q = m. c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

305 cal = 25 g ×0.210 cal/g.°C × T2 - 25°C

305 cal = 5.25cal/°C × T2 - 25°C

305 cal / 5.25cal/°C = T2 - 25°C

58.1 °C = T2 - 25°C

T2 = 58.1 °C + 25°C

T2 = 83.1 °C

7 0

2 years ago

An aerosol can contains gases under a pressure

kompoz [17]

Answer:

Explanation:

and e

4 0

2 years ago

Describe what golgi looks like.

Margaret [11]

Here is what Golgi looks like, so that you can look at the picture and describe it.
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Glad I could help, and good luck!
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7 0

3 years ago

1 pentagram equals how many grams

Fofino [41]

Answer:

5 grams.

Explanation:

Anything that weighs 5 grams, technically, is a pentagram.

7 0

3 years ago

A molecule has three bonded atoms around the central atom. The central atom does not have any lone pairs. What is the geometry o

adelina 88 [10]

Answer:

trigonal planar

Explanation:

Tri=three, three-dimensional arrangement of the atoms that constitute a molecule.

5 0

3 years ago