The answer is the nucleus. Hope this helped!
The formula for potassium chlorate is: 2KClO₃ → 2KCl + 3O₂
If moles = mass ÷ molar mass
then moles of KClO₃ = 25 g ÷ [( 39 × 1 ) + ( 35.5 × 1) + ( 16 × 3)] g/mol
= 25 g ÷ ( 122.5 g ) g/mol
= 0.2041 mol
Now the mole ratio of KClO₃ : O₂ is 2 : 3
∴ if moles of KClO₃ = 0.2041 mol
then moles of O₂ = ( 0.2041 mol ÷ 2 ) × 3
= 0.3061 mol
Now since mass = moles × molar mass
∴ the mass of oxygen produced = 0.3061 mol × ( 16 × 2) g/mol
= 9.796 g
∴ the grams of oxygen gas produced when 25 grams of potassium chlorate is decomposed is ~ 9.80 g.
Answer:
4 × 10⁶ sec
Explanation:
The distance between the earth and the moon = 384,400 km
The speed of the peregrine falcon = 350 km/hr
Considering,
Distance = Speed × Time
So,
Time = Distance / Speed = 384,400 km / 350 km/hr = 1098.28571 hrs
Also,
1 hr = 3600 sec
So,
1098.28571 hrs = 3600 × 1098.28571 s ≅ 4 × 10⁶ sec
<u>Thus time taken by peregrine falcon if falcon fly to the moon = 4 × 10⁶ sec </u>
Answer:
Explanation:
The ionic compound CuCl2
is a binary compound called Copper (II) Chloride.
This compound is composed of a metal cation of copper with a charge of Cu+2
and a non-metal chloride ion Cl−1. It takes two Chloride
Cl−1 to balance the Copper
Cu+2
. This makes the formula
CuCl2
The copper is the metal, it is located in the middle section of the periodic table known as transition metals. These metals may have more than one possible ionic charge. Copper can have a +1 charge
Cu+1
or a +2 charge
Cu+2
. The roman numeral in the formula name identifies the charge on the atom.
The Cu+2
ion is referred to as Cupric in a system known as Latin Naming, while the
Cu+1
ion is called Cuprous.
So this compound can be named as Copper (II) Chloride or Cupric Chloride.
It is both. We normally think of it as a base because it raises the pH of water by accepting a proton,
HCO3- + H2O <-----> H2CO3 + OH-
but if you add bicarbonate to a strongly basic solution, it actually lowers the pH by donating a proton.
HCO3- + OH- <------> CO3(2-) + H2O. That's why it is an amphoteric substance