We can change a gas to a liquid by INCREASING the temperature and DECREASING the pressure
B.
Explanation: Molar mass: the mass in grams of one mole of any substance (elements or compounds). Also known as atomic mass, atomic weight, molecular weight (MW), and formula weight (FW), but these terms can be misleading. 1 mole 12C = 6.022 x 1023 atoms 12C = 12 g 12C. 12C is defined to be exactly 12 g.
Answer:
9.606 grams of citric acid are present in 125 mL of a 0.400 M citric acid solution.
Explanation:
Molarity : It is defined as the number of moles of solute present in one liter of solution. Mathematically written as:
Moles of citric acid = n
Volume of the citric acid solution = 125 mL =125 × 0.001 L= 0.125 L
(1 mL = 0.001L)
Molarity of the citric acid solution = 0.400 M
n = 0.400 M × 0.125 L = 0.05 moles
Mass of 0.05 moles of citric acid :
9.606 grams of citric acid are present in 125 mL of a 0.400 M citric acid solution.
I believe the correct answer would be the third option. It is the burette that is the apparatus that is used in titration. It is the best apparatus to use since you can easily control the amount you add to the sample solution. Also, you can easily read off the volume that was added.