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It’s D actually because a proton has a positive charge and an electron has a negative charge
1) The question contains an unknown unit
The number 8908.8 has to be in units of mass: for example, kg or grams.
Here you indicated L.
I am going to work assuming that L is a mass unit. So you can see the way to solve the problem, but you have to verifiy the real unit of the statement and substitute with it.
With that in mind you can find the density of the liquid from:
density = mass / volume
2) Calculate the volume.
The volume of the liquid is the volume of the vessel, because it is filled.
The volume of the vessel is calculated from the formula of volume for a rectantular prism.
Volume of a rectangular prism = area of the base * height = side * side * height
=> Volume = 10 dm * 4 dm * 6 dm = 240 dm^3 = 240 liter
3) Calculate the density:
density = mass /volume = 8,908.8 L / 240 liter = 37.12 L / dm^3
Answer: 37.12 L / dm^3
Answer:
to balance a chemical equation the amount of reactants must be equal to the amount of products, an easy way to balance it is write out how many you have on both sides
Explanation:
if you're dealing with molecular equations you would do it like this:
eg. A double displacement reaction between magnesium hydroxide and hydrochloric acid
Mg(OH)2 (aq) + HCl (aq) = MgCl2 (aq) + H2O (l)
Mg-1. Mg-1
O-2. O-1 *2
H-2. H-2
Cl-1 *2 Cl-2
Balanced eq: Mg(OH)2 (aq) + 2HCl (aq) = MgCl2 (aq) + 2H2O (l)
if you're dealing with ionic equations , you would deal with charges and you would need to cancel out spectator ions, like this:
Mg^2+(aq) + 2OH^-(aq) + 2H^+ (aq) + 2Cl^- (aq) = Mg ^2+(aq)+ 2Cl^- (aq) + H20 (l)
the spectator ions are the ones that are the same on both sides which would be the Mg^2+ and the 2Cl^- so when writing the net ionic equation, it would just be:
2OH^-(aq) + 2H^+ (aq) = + H20 (l)