CaCl₂ + 2 AgNO₃ = Ca(NO₃)₂ + 2AgCl
Calcium Chloride + Silver Nitrate = Calcium Nitrate + Silver Chloride
<span>( double replacement )</span>
hope this helps!
Answer:- atoms of boron.
Solution:- It's unit conversion problem that could easily be solved step by step.
Step 1:- grams to moles conversion-
2.00 g B (1 mol B/10.81 g B) = 0.185 mol B
Step 2:- mol to atom conversion-
0.185 mol B(6.022 x 10^23 atom B/1mol B) = atoms of B
Answer:
X₅Y₂Z₃
Explanation:
The formula of a compound is determined as the whole number ratio between moles of each element present in the molecule.
The molecule is made from X, Y and Z. To fin the ratio we will divide the given moles in the moles of Y (0.197 moles), because is the element with the low number of moles.
X = 0.492 moles / 0.197 moles = 2.5
Y = 0.197 moles / 0.197 moles = 1
Z = 0.295 moles / 0.197 moles = 1.5
But, as the formula is given just with whole numbers, if we multiply each number twice:
X = 2.5*2 = 5
Y = 1*2 = 2
Z = 1.5*2 = 3
The formula is:
<h3>X₅Y₂Z₃</h3>
Answer:
8
Explanation:
Since Xe (xenon) is a noble gas, it has 8 valence electrons. It's outer shell is full and it is a stable element and doesn't like to react. Therefore, since the electron dot diagram is about valence electrons, 8 would be your answer.