Answer:
The molar mass of carbon
Explanation:
Before the mass (in grams) of two moles of carbon can be determined, <u>the molar mass of the element would be needed.</u>
<em>This is because the number of mole of an element is the ratio of its mass and the molar mass</em>. That is,
number of mole = mass/molar mass
Hence, the mass of elements can be obtained by making it the subject of the formular;
mass = number of mole x molar mass
<em>Therefore, the molar mass of carbon would be needed before the mass of 2 moles of the element can be determined.</em>
True. For example, electron domain geometry and molecular geometry of water and ammonia are different.
The period of any wave is one second. the measure of the wave, in this case 440 Hz, is how many wavelengths per second.
The answer is 5.8x10^-10. I did the math and checked other sources as well.
Answer:

Explanation:
The term used by particular kind of matter is called substance.
A substance is a particular kind of matter because it has physical properties.