Answer:
please i hope this is correct
Explanation:
Answer:
Sln
n=m/mr
n=25/100
n=0.25mole of Caco3
Malality =number of moles/volume (divided by number of moles both sides)
volume =Malality /number of moles
v=0.125/0.25
v=0.500L
I hope this help
Answer:
30%
Explanation:
<em>This is the chemical formula for zinc bromate: Zn(BrO₃)₂. Calculate the mass percent of oxygen in zinc bromate. Round your answer to the nearest percentage.</em>
Step 1: Determine the mass of 1 mole of Zn(BrO₃)₂
M(Zn(BrO₃)₂) = 1 × M(Zn) + 2 × M(Br) + 6 × M(O)
M(Zn(BrO₃)₂) = 1 × 65.38 g/mol + 2 × 79.90 g/mol + 6 × 16.00 g/mol
M(Zn(BrO₃)₂) = 321.18 g/mol
Step 2: Determine the mass of oxygen in 1 mole of Zn(BrO₃)₂
There are 6 moles of atoms of oxygen in 1 mole of Zn(BrO₃)₂.
6 × m(O) = 6 × 16.00 g = 96.00 g
Step 3: Calculate the mass percent of oxygen in Zn(BrO₃)₂
%O = mO/mZn(BrO₃)₂ × 100%
%O = 96.00 g/321.18 g × 100% ≈ 30%
Answer: 1) The element that would be the most effective at accepting electrons from another reagent is Cl.
2) The element that would be expected to be the best insulator is Cl (non-metal).
3) The element that is best able to form an ionic compound with sulfur is Rb.
Explanation:
Metals are the species which readily lose electrons in order to attain stability and non-metals are the species which readily accept an electron in order to attain stability.
Generally, metals on combining with non-metals lead to the formation of an ionic compound. For example, is an ionic compound where Rb is the metal and S is the non-metal.
Out of the given option Cl is highly electronegative in nature so it will readily accept an electron from a donor atom.
Insulator are the substances which do not allow electric current to pass through them. For example, non-metals are insulators.
Thus, we can match the elements below to the appropriate blanks in the following sentences.
1) The element that would be the most effective at accepting electrons from another reagent is Cl.
2) The element that would be expected to be the best insulator is Cl (non-metal).
3) The element that is best able to form an ionic compound with sulfur is Rb.
Answer:
V=12.6148888506L
Explanation:
using charles law Volume1/Temperature1 = Volume2/Temperature2
13.4L/(17C+273.15C)=V/273.15K
remember gas equations require kelvin not celcius so converting celcius to kelvin is Celcius + 273.15 which is standard temperature conditions