How would you prepare a 1 L solution of 3 M Mgo? O A. Put 120 grams of Mgo in the beaker and add exactly 1 L of water.
O B. Put 3 grams of Mgo in the beaker and add exactly 1 L of water.
O C. Put 3 grams of Mgo in the beaker and add enough water to reach the 1 L mark.
O D. Put 120 grams of Mgo in the beaker and add enough water to reach the 1 L mark.​

We need to 120 g of MgO in the beaker and add enough water to reach the 1 L mark.​

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

where,

n = moles of solute

= volume of solution in L

moles of =

Now put all the given values in the formula of molality, we get

Therefore, we need to 120 g of MgO in the beaker and add  enough water to reach the 1 L mark.​

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.