Answer: I believe it’s the second one
(F)
Explanation:
Answer:
Option C: Observation
Explanation:
The first and foremost step in the process of scientific inquiry is observation. Because, until there is no observation there are no questions to Ask. Having high quality observation is too much valuable in scientific process.
Answer:2.27 g H2O
Explanation:
Step 1. Get the limiting reagent
1.24 atm of H2 would react completely with 1.24 x (1/2) = 0.62 atm of O2, but there is more O2 present than that (0.98). O2 is in excess and H2 is the limiting reactant.
If the reaction goes to completion:
(1.24 atm H2) x (2 mol H2O / 2 mol H2) = 1.24 atm H2O vapor
n = PV / RT = (1.24 atm) x (2.5 L) / ((0.08205746 L atm/K mol) x (28 + 273)K) = 0.126 mol H2O
(0.126 mol H2O) x (18.01532 g H2O/mol) = 2.27 g H2O
Answer:
1.42m/s
Explanation:
velocity=displacement/time
v=50/35=1.42m/s
4. Gold: 79 Protons 118 Neutrons 79 Electrons
Potassium: Protons 19 Neutrons 20 19 Electrons
Copper: Protons 29 Neutrons 35 electrons 29
Oxygen: Protons 8 Neutrons 8 Electrons 8
Argon: Protons 18 Neutrons 22 Electrons 18
And for the Element with the symbol Ca: Calcium: Protons 20 Neutrons 20 Electrons 20
1. Atomic Number
2. Atomic Mass
3. How many protons are in the atom or in other words the atomic number.
