Answer:
It represents the <em>number of atoms</em> of that particular element present in the compound. In C₂H₄O₂ there are 2 Carbon atoms, 4 Hydrogen atoms and 2 Oxygen atoms.
In this experiment you will determine the density of an unknown liquid. You will measure the mass of a known volume delivered from a pipet and use the expression:
<span><span><span>M
V</span></span><span>D=</span><span /></span>
where D = density, M = mass and V = volume to calculate the density of the unknown liquid.
A mutation that gives a rabbit a third ear
Answer:
The coefficients are 2,1,1,1
Explanation:
2HCl + Mg —> MgCl2 + H2
Answer:
The answer to your question is: # of atoms = 2.42 x 10¹⁰
Explanation:
Data
radius = 248 pm
row = 6 cm long
Conversion
1 pm ------------------- 1 x 10 ⁻¹⁰ cm
248 pm -------------------- x
x = (248 x 1 x 10⁻¹⁰) / 1
x = 2.48 x 10⁻¹⁰ cm
Divide
# of atoms = 6 / 2.48 x 10⁻¹⁰
# of atoms = 2.42 x 10¹⁰