<span>1.006 g of Na2CO3 is left; which means that (2.714 -1.006) g of water are lost from the hydrated sodium carbonate
So, water present = </span>(2.714 -1.006) = 1.708 g.
Molecular Wt. of water is =18 g
so moles = 1.708/18 moles = 0.095 moles.
Now, <span>Na2CO3 has molecular wt. of = 23x2 + 12 +3x16 = 106 g,
so moles of Na2CO3 = 1.006/106 moles = 0.0095 moles </span>
<span>Ratio is = 0.0095 / 0.095 = 1 / 10 [ moles of Na2CO3 / moles of H2O ]
Ratio is saying on every 1 mole of Na2CO3 , there are 10 moles of H2O
so x is 10</span>
Answer:PLEASE MARK BRAINIEST
The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy. Today, this process uses instruments with a grating that spreads out the light from an object by wavelength. This spread-out light is called a spectrum. Every element — and combination of elements — has a unique fingerprint that astronomers can look for in the spectrum of a given object. Identifying those fingerprints allows researchers to determine what it is made of.
That fingerprint often appears as the absorption of light. Every atom has electrons, and these electrons like to stay in their lowest-energy configuration. But when photons carrying energy hit an electron, they can boost it to higher energy levels. This is absorption, and each element’s electrons absorb light at specific wavelengths (i.e., energies) related to the difference between energy levels in that atom. But the electrons want to return to their original levels, so they don’t hold onto the energy for long. When they emit the energy, they release photons with exactly the same wavelengths of light that were absorbed in the first place. An electron can release this light in any direction, so most of the light is emitted in directions away from our line of sight. Therefore, a dark line appears in the spectrum at that particular wavelength.
Explanation:
Answer:
"Milk is preferable to coffee."
Explanation:
The answer to the question is the letter "A. Ionic Bonding".
Ionic bonding involves a lattice of positive ions and the strength between the ions is called enthalpy bonding. This is the type of bonding that involves a lattice of positive ions surrounded by a cloud of delocalized electrons.
One is possitive and one is negatve