Adding salt increases the boiling point of the water, which would make it so the water takes longer to get to a boiling point.
Answer:
The mass of I₂ produced is 66.43 g.
Explanation:
In a stoichiometry exercise we follow a series of steps.
Step 1: Write the balanced equation
2 CuCl₂ + 4 KI ⇄ 2 CuI + 4 KCl + I₂
Step 2: Look for the relationship between the data we have and the one we are looking for
According to the balanced equation, when 2 moles of CuCl₂ react 1 mole of I₂ is formed. This is the first relation. Secondly, we know that the molar mass of 253.80 g/mol, that is, every mole of I₂ has a mass of 253.80 g. This is the second relation.
Step 3: Apply relations to the data we have
Talc is not a good choice when building a statue because the mineral Talc is one of the weakest minerals on the Mohs Scale with a hardness of 1 since it could be scratched by a fingernail, which means that when people build a statue with Talc, it could be easily broken down.
Explanation:
When citric acid and baking soda react with one another, they change chemi- cally and form sodium ions, citric acid ions, carbon dioxide gas, and water. ... It also makes up the bubbles in carbonated drinks and is a gas we naturally exhale. Carbon dioxide gas is safe in the quantities produced in the activities.
<u>Answer:</u> The order of reactivity will be F > O > N > C > B.
<u>Explanation:</u>
Reactivity of an element is defined as the tendency for it to gain or loose electrons easily.
From the given elements, all are non-metals except boron.
Boron is a metalloid and it does not attract or loose electrons easily. Hence, it is the least reactive element.
Reactivity of non-metals increases across a period because of the decrease in size and electrons are more attracted towards the nucleus and hence, can gain electrons easily. Therefore, the most reactive metal will be fluorine.
Hence, the order of reactivity will be F > O > N > C > B.
