Answer:
3
Explanation:
In scientific notation, the number of integers in the first part will always be the amount of significant figures.
For example,
1) 1.542505 x 10^17 =7 significant figures
1) 1.54 x 10^17 =3 significant figures
The molecules in gas are farther apart and have more room to bounce around than liquid.Gas molecules expand until they are spread out through out the space they are given while liquids take the shape of their container.
Answer:
H2O(the most), OH^-, K^+, H3O^+, KOH(the least)
Explanation:
In a solution, the solvent molecules account for the highest amount of chemical species present. The solvent molecules are often present in large excess. Since water is the solvent for KOH, water molecules are the most abundant chemical species present.
The ions; OH^-, K^+, H3O^+ are present in the order depicted in the answer above. KOH is the least abundant specie because KOH is ionic and will be split into its constituent ions in water. There will be little or no KOH specie present in the solution.
Answer:
25.4psi
Explanation:
In this problem, both psi and atm are units of pressure. If the pressure of air in a car tire is 1.73atm the only thing you need to do is convert atm to psi using the conversion factor:
<em>14.696psi = 1 atm</em>
Thus, 1.73 atm are:
1.73atm × (14.696psi / 1atm) = <em>25.4psi </em>is the pressure of the air in a car tire.
Answer:
PBr5 is the formula of phosphorus pentabromide.
hope it helps!