The flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.230 M NaOH. It requires 17.7 ml of the NaOH solution to reach the end point of the titration. What is the initial concentration of HCI?

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !

i think it's letter a.