A digital thermometer is more preferable than a liquid-based thermometer because it gives accurate data than the liquid thermometer. Liquid thermometer is affected by the temperature, and when it does, the liquid expands and so des the material covering the thermometer. For the digital thermometer, it has less error because it already has a sensor inside it that determines the temperature of the substance.
Answer: .1044 J/g*C°
Explanation: The equation you need to use for this problem is :
c= q/m* ΔT
We are given
T1= 27.1 C°
T2= 145 C°
M= 34.87g
1071 J absorbed heatt
So let's solve specific heat
c= 1071J/ (87grams)*(145 C°- 27.1 C°)
c= 1071J/10,257.3 g*C°
c= .1044 J/g*C°
c=specific heat
False
B. 3 billion years
C. 4 billion years
D. 4.5 billion years
a. True
b. False
Answer: True
Explanation: An ionic bond is formed when an element completely transfers its valence electron to another element.
Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself.
The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element.
This bond is formed between a electropositive metal and a electronegative non-metal .
Ionic bonds result from high electronegativity differences. True.
Ionic bonds result from high electronegativity differences. True. An ionic bond is formed when one atom, usually a metal, transfers one or more electrons to another atom, typically a nonmetal, resulting in the formation of ions with opposite charges. Electronegativity is the tendency of an atom to attract a shared pair of electrons in a covalent bond. When there is a high electronegativity difference between two atoms, one atom will strip electrons away from the other, leading to the formation of ionic bonds.
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Answer : The new pressure of the gas will be, 468.66 atm
Explanation :
Boyle's Law : This law states that pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.
(At constant temperature and number of moles)
or,
where,
= initial pressure of the gas = 74 atm
= final pressure of the gas = ?
= initial volume of the gas = 190 ml
= final volume of the gas = 30 ml
Now we put all the given values in the above formula, we get the final or new pressure of the gas.
Therefore, the new pressure of the gas will be, 468.66 atm
Answer: The new pressure of the gas is 467 atm.
Explanation:
To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.
The equation given by this law is:
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
Putting values in above equation, we get:
Hence, the new pressure of the gas is 467 atm.