To determine the volume of both concentration of vinegar, we need to set up two equations since we have two unknowns.
For the first equation, we do a mass balance:
mass of 100% vinegar + mass of 13% vinegar = mass of 42% vinegar
Assuming they have the same densities, then we can write this equation in terms of volume.
V(100%) + V(13%) = V(42%)
we let x = V(100%)
y = V(13%)
x + y = 150
For the second equation, we do a component balance:
1.00x + .13y = 150(.42)
x + .13y = 63
The two equations are
x + y = 150
x + .13y = 63
Solving for x and y,
x = 50
y = 100
Therefore, you need to mix 50 mL of the 100% vinegar and 100 mL of the 13% vinegar.
Answer: Anna stated that ionic compounds have high melting point and low boiling point. The error in the statement is that ionic compound have low boiling point, instead ionic compounds have high boiling point, because in an ionic compound, the force of attraction working between two ions is very strong and hence the bonds present are very strong, and a lot of energy is needed to break them
The Curiosity rover found sulfur compounds in rocks and carbon in organic compounds like propane, butene, benzene, toluene and thiophene.
It detected methane, not in soil samples, but in the Martian atmosphere.
It did not discover helium in underground pockets. The hole it can drill is only 5 cm deep.
Answer:
1. Which of these is not an example of a community? an individual who is raising money for cancer research THERE IS NO SUCH THING AS A ONE PERSON COMMUNITY
2. What are folkways? the social customs that teach an individual how to act within a group. FOLKWAYS ARE PART OF OUR CULTURE
3. Which term is associated with this scenario? The governor announces a new program that is designed to improve the algebra scores of ninth-grade students. institution THE ANNOUNCE APPLIES TO ALL HIGH SCHOOLS AND WAS MADE BY AN ELECTED AUTHORITY
4. Which of these statements is true? The family is the main source of socialization in a society. FAMILY IS THE BASIS OF SOCIETY
5. What are mores? the serious prohibitions against deviant behavior in a society that result in severe punishment MORES ARE VERY STRICT SOCIAL NORMS
6. What are laws? the protection of all people within a society EVERYBODY SHOULD BE EQUALLY PROTECTED UNDER THE LAW
