Answer:
Explanation:
1. First balance the equation for the synthesis of cryolite:
2. Find the limiting reagent between the 
and 
- First calculate the number of moles of each compound using its molar mass and the mass that reacted completely:
- Divide the number of moles obtained between the stoichiometric coefficient of each compound in the chemical reaction:
The 
is the limiting reagent because it has the smallest number.
3. Find the mass of cryolite produced:
Answer:
<u>D) A base.</u>
Explanation:
A base in chemistry is something that is slippery, hence it being a soap.
Answer:
You can only be able to solve two variables, k and x based on what you input as your question
k= -2x+3
x= (3-k)/2
Explanation:
Answer:
Regularly test the water in residents' homes.
Explanation:
The only way to know if tap water contains lead is to do tests to determine the levels of that metal in the water. Therefore, the state is under an obligation to constantly conduct such tests in the resident´s homes and thus determine whether the water supplied is fit for human consumption.
The state after the tests must guarantee the population the treatment of the water to reduce the levels of lead. The main pipes that contain lead pipes must be changed, as well as those parts of the service connections made of lead.
