Answer:
(a) barium chloride : BaCl₂ [the cation is barium and anion chloride]
(b) magnesium-nitride
: Mg₃N₂ [Mg is cation and N anion]
(c) sulfur dioxide
: SO₂ [ S is cation and O anion]
(d) nitrogen trichloride : NCl₃
(e) dinitrogen trioxide
: N₂O₃ [two nitrogens and three oxygen]
(f) tin(IV) chloride : SnCl₄
Explanation:
The formula of a compound comprises of the symbol of all the elements.
The element or ion having positive charge is written first followed by anion.
The number of any element is represented as subscript in the formula.
(a) barium chloride : BaCl₂ [the cation is barium and anion chloride]
(b) magnesium-nitride
: Mg₃N₂ [Mg is cation and N anion]
(c) sulfur dioxide
: SO₂ [ S is cation and O anion]
(d) nitrogen trichloride : NCl₃
(e) dinitrogen trioxide
: N₂O₃ [two nitrogens and three oxygen]
(f) tin(IV) chloride : SnCl₄
Answer:
A. AlO
Explanation:
The empirical formula of a compound is the simplest possible formula giving the ratio of atoms in a molecule of the compound.
We know that Aluminium forms 
and oxygen forms 
.
As such the formation of the ionic compound between a metal and non-metal results into 
.
The empirical formula is as follows:
Element Aluminium Oxygen
% composition
by mass 26.98 16.0
mole ratio 26.98/26 16/16
= 1.04 = 1
divided by the
smallest number 1.04/1 1/1
1.04 1
The empirical formula is AlO
Answer:
The statements that describe sunspots is;
D. Sunspots have lower temperatures than their surroundings
Explanation:
Sunspots is a phenomenon that involves temporary appearance of dark areas on the Sun's surface, which are regions of concentrated magnetic field flux which inhibit heat transfer by convection and are therefore cooler than other parts of the Sun. Due to the presence of magnetic field magnetic
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Opposite magnetic polarity sunspots usually appear as a pair.
Therefore, the statement that best describe sunspots is that a sunspot is a region of reduced temperature compared to surrounding areas on the Sun's surface.
Mole = Mass / Molar mass
6.12 moles = Mass / 74.92 g/mol
Mass = 6.12 moles x 74.92 g/mol
Mass = 458.51g
I had this quiz too. The answer is carbon, hydrogen, oxygen. Hope this helps!
