Answer:
I dont know i just wrote this because i have a question too sorry
Answer:
290 g of hydrogen peroxide would fill the 200.0 mL container
Explanation:
Given data:
Volume = 200.0 mL
Mass of hydrogen peroxide = ?
Solution:
Density of hydrogen peroxide is 1.45 g/cm³.
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Now we can determine the mass of hydrogen peroxide.
D = m/v
1.45 g/cm³ = m/ 200.0 mL
1 mL = 1 cm³
m = 1.45 g/cm³× 200.0 cm³
m = 290 g
So 290 g of hydrogen peroxide would fill the 200.0 mL container.
Elements. Elements cannot be further separated as they are the most basic substances.
Answer:
MgO has a highest melting point
C5Br has lowesst
Explanation:
It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points. ... Magnesium oxide is made from ions with two charges (Mg 2+ and O 2-) and so has a much higher melting point of 2852°C.
Answer:
0.667 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 250 mL
Initial concentration (C₁) = 12 M
Final concentration (C₂) = 4.5 M
Final volume (V₂) =?
The final volume of the solution can be obtained by using the dilution formula as illustrated below:
C₁V₁ = C₂V₂
12 × 250 = 4.5 × V₂
3000 = 4.5 × V₂
Divide both side by 4.5
V₂ = 3000 / 4.5
V₂ = 667 mL
Finally, we shall convert 667 mL to L. This can be obtained as follow:
1000 mL = 1 L
Therefore,
667 mL = 667 mL × 1 L / 1000 mL
667 mL = 0.667 L
Thus, the volume of the solution prepared is 0.667 L
