Answer:
The mass of the given gold bar:<u> m = 1.8 × 10² g</u>
Explanation:
The Specific heat capacity (c) of a given substance is defined as the heat capacity (C) per unit mass (m) or the energy required (Q) to increase the temperature (ΔT) of the given substance per unit mass.
∴ <u>The specific heat capacity</u>: 
Given: The specific heat capacity of gold (Au) = 0.128 J/g°C
The increase in temperature: ΔT = 34.7°C - 30.0°C = 4.7°C
Heat energy: Q = 0.108 kJ = 0.108 × 1000 J = 108 J (∵ 1 kJ = 1000J)
Mass of the given gold bar: m = ?
<u>Therefore, the mass of the given gold bar</u>:
<u>Therefore, the mass of the given gold bar: m = 1.8 × 10² g</u>
The statement above is TRUE.
The periodic table refers to the table of chemical elements, in which the elements are arranged in order of their atomic numbers in such a way that, similar elements appear in vertical columns. Elements in the same column usually have similar atomic structures and similar chemical properties. Thus, the periodic table allows one to easily compared the properties of one element to that of another one depending on the placement of the elements in the periodic table.<span />
That car moves or accelerates faster which has the higher speed.
If the red car accelerate at higher speed than black car then the red car reach first on the destination but if the black car moves with higher speed than red car then the black car reach its destination earlier than the red car.
The conclusion can be drawn when the image is present or any data but there is no data or image present which provides us accurate information so we can conclude logically that car which moves at higher speed will move faster than the other car.
Learn more: brainly.com/question/25525382
Answer: The correct answer is : 44.1 g / mol
Explanation: d = PM / RT
M = dRT / P
d = 1.97 g / l
R = ideal gas (0.082 06 l - atm / mol - ° K)
P = 1 atm
T = 273 ° K
M = Molar mass
M = 1.97 g / l x 0.082 l - atm / mol - ° K x 273 ° K / 1 atm
M = 44.1 g / mol
