M = 0,23kg = 230g
d = 1g/cm³
V = 230g / 1g/cm³ = 230cm³ = 0,23L
Answer:
m = 0.531 molal
Explanation:
∴ m fructose = 3.35 g
∴ V water = 35.0 mL
∴ ρ H2O = 1 g/mL
- molality = moles solute / Kg solvent
∴ Mw fructose = 180.16 g/mol
⇒ moles fructose = 3.35 g * ( mol / 180.16 g) = 0.0186 mol fructose
⇒ m H2O = 35.0 mL * ( 1 g/mL ) * ( Kg/1000g) = 0.035 Kg H2O
⇒ molality (m) = 0.0186 mol fructose / 0.035 Kg H2O
⇒ m = 0.531 molal
Answer:
the sewcond one bacteria are living organisms, but viruses are not
Explanation:
<span>The correct answer among the choices given is option A. Elements are
distinguished from compounds. An element is a pure chemical substance which is
from a same atom while compounds are from different elements. It contains atoms
of different elements.</span>
<h3>Answer;</h3>
Substance i > Substance ii > Substance iii
<h3>Explanation:</h3><h3><em><u>Substance i</u></em><em> :</em></h3>
Data Given;
Density = ?
Mass = 12 g
Volume = 10 mL
Formula Used;
Density = Mass ÷ Volume
Putting Values,
Density = 12 g ÷ 10 mL
Density = 1.2 g.mL⁻¹
<h3><em><u>Substance ii</u></em><em> :</em></h3>
Data Given;
Density = ?
Mass = 10 Kg = 10000 g
Volume = 10 L = 10000 mL
Formula Used;
Density = Mass ÷ Volume
Putting Values,
Density = 10000 g ÷ 10000 mL
Density = 1 g.mL⁻¹
<h3><em><u>Substance iii</u></em><em> :</em></h3>
Data Given;
Density = ?
Mass = 10 mg = 0.01 g
Volume = 12.0 μl = 0.012 mL
Formula Used;
Density = Mass ÷ Volume
Putting Values,
Density = 0.01 g ÷ 0.012 mL
Density = 0.833 g.mL⁻¹
