Answer:
34.23 grams H2O.
Explanation:
1 Mole of HCl produces 1 mole of water
So 1.9 moles producers 1.9 moles of water
= (2*1.008 + 16) * 1.9
= 18.016 * 1.9
= 34.23 grams H2O.
Answer:
The answer is
<h2>15.86 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of glycerol = 20 g
density = 1.261 g/mL
The volume is
We have the final answer as
15.86 mL
Hope this helps you
To answer this question, you need to know how to convert milliliters into liter then into a gallon. In this question, you are given the gasoline density (0.737g/ml) and the volume (12.8gallon). The information is enough to determine the gas weight. The calculation would be:
Gas weight= density * volume
Gas weight= 0.737g/ml * 12.8 gal * 3.78L/gal * 1000ml/L= 35659.008 grams
I believe it’s oxygen but I’m not sure.
Answer: By adding the number of protons and neutrons
Explanation:
Protons and neutrons have very similar masses and are used in calculating the mass of an atom. One would calculate the mass of an atom by doing the (mass of a proton) x (# of protons) + (mass of a neutron) x (# of neutrons). Electrons have such a small mass that their mass is considered negligible and therefore is not included in mass calculations for atoms.
mass of a proton: 1.67262 × 10−27 kg
mass of a neutron: 1.67493×10−27 kg
mass of an electron: 9.10938 × 10-31 kg