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Art [367]
3 years ago
8

Why can water be used in the cooling system of a car? A. it always heats the car in the winter B. it helps fluctuate temperature

s in different climates C. it resists fast temperature changes in the cars engine D. it helps produce fewer carbon dioxide emissions
Chemistry
2 answers:
JulsSmile [24]3 years ago
8 0
The answer is C. It resists fast temperature change
jenyasd209 [6]3 years ago
7 0

Answer:

The correct answer is option C, it resists fast temperature changes in the cars engine

Explanation:

The specific heat capacity of water is extremely high thus a large amount of heat is required to raise the temperature of water by one degree celcius. When the car radiator gets extremely heated , water absorbs this heat without itself getting heated. Also being easily available , it is the cheapest and most preferred coolant .

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An evacuated 276 mL glass bulb weighs 129.6375 g. Filled with an unknown gas, the bulb weighs 130.0318 g. Calculate the gas dens
baherus [9]

Answer:

density=1.43 g/L

Explanation:

Since the density formula is density = mass / volume, we need to find out the mass of the gas and the volume is that of the container.

The mass of the gas is  130.0318 g-129.6375 g=0.3943 g

The gas volume is  276mL*(1L/1000mL) 0.276 L

density = mass / volume=0.3943g/0.276L

density =1.43g/L

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3 years ago
What are the benefits and dangers of the Iron element in our daily life?
Digiron [165]
Benefits; helps our red blood cells transport oxygen all around our body
8 0
3 years ago
For double-helix formation, DG can be measured to be 2 54 kJ mol 1 ( 2 13 kcal mol 1 ) at pH 7.0 in 1 M NaCl at 25 8C (298 K). T
levacccp [35]

Answer:

ΔS = -661.0J/mol is the entropy change for the system

ΔS = -842J/mol.K is the entropy change for the surroundings

Explanation:

From the relationship between ΔG, T, ΔH and ΔS,

Mathematically, ΔG = ΔH - TΔS

TΔS = ΔH - ΔS

ΔS = ΔH - ΔS / T

but ΔG = -54 kJ/mol, ΔH = -251 kJ/mol and T = 25 °C (298 K)

plugging into the equation,

ΔS = -251 kJ/mol - ( -54 kJ/mol) / 298

ΔS  = -0.6610KJ/mol or in J.mol

ΔS = -661.0J/mol is the entropy change for the system

  • For entropy change for the surroundings = ΔS = ΔH/T
  • ΔS  = -251 kJ/mol / 298K
  • ΔS = -0.84KJ/mol.K or -842J/mol.K is the entropy change for the surroundings
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2 years ago
A chocolate chip cookie can be separated by physical means, and it is not the same throughout.
yarga [219]
As a heterogeneous mixture
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3 years ago
Read 2 more answers
Help! 7th Grade Math!
vagabundo [1.1K]

Answer:

D

Explanation: Trust me

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