<h2>Answer : The order of conductivity from most conductive to least is this - </h2><h2>Calcium bromide
, Potsassium bromide (KBr), Benzoic acid
and last is sugar.</h2><h3>Explanation : </h3>
When dissolved in water produces three ions namely; 
and 
which acts as best conductor amongst the given choices.
Next is potassium bromide when dissolved in water generates only two ions which are 
and 
and acts as an conductor.
Benzoic acid 
, is a weak acid and is slightly ionized so it acts as an weak conductor.
Sugar is a non ionized compound so it is anon conductor.
Answer:
158.5g Zn are produced
Explanation:
To solve this question we have to find the moles of Aluminium. With the moles of Aluminium and the balanced reaction we can find the moles of Zn and its mass as follows:
<em>Moles Al -Molar mass: 26.98g/mol</em>
43.6g Al* (1mol/26.98g) = 1.616 moles Al
<em>Moles Zn:</em>
1.616 moles Al * (3mol Zn / 2mol Al) =
2.424 moles Zn are produced
<em>Mass Zn -Molar mass: 65.38g/mol-</em>
2.424 moles Zn * (65.38g / mol) =
<h3>158.5g Zn are produced</h3>
Answer:
Fonts for Android and iPhone - www.fontskeyboard.com/share-now
Explanation:
☀︎︎☹︎♫︎☹︎♫︎
Answer:
Heated copper metal reacts with oxygen to form the black copper oxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water.
Averqge speed of the car = 45 miles/hr, which means,
The car travels 45 miles in 1 hr.
Using unitary method,
The car travels 45 miles in 1 hr
The car would travel 1 mile in 1/45 hrs
The car would travel 90 miles in 1/45×90 hrs
So, calculating this,
1/45×90 = 2 hrs
