A substance through which an electrical current flows poorly would be said to be a poor conductor. That is, the substance has a low conductance (or conductivity). There’s a nuance between the two terms, but it shouldn’t matter for our purposes.
Since such a material resists the flow of electric charge, the material can be said to have a high resistance (or high resistivity).
Mathematically, resistance and conductance are reciprocals of one another; a low conductance implies a high resistance, and a high conductance implies a low resistance.
<span>C. New substances are always produced in chemical changes, which is not the case with physical changes. For example, when you cut wood into smaller pieces you still have wood in the end. But, with a chemical change you change the substance's whole composition. For example when you add two hydrogen's to one oxygen you have water and it can't break down from that. </span><span />
Find mow many moles of sugar you have total
20 mL / 1000 mL x 3 M = .06 moles sugar
30 mL / 1000 mL x 5.69 M = .1707 moles sugar
Total = .2307 moles
Find how many mL of solution you have. 20 mL + 30 mL = 50 mL
1000 mL / 50 mL x .2307 moles = 4.614 M solution
The partial pressure of the neon gas is 0.48 atm in the flask with total pressure of 1.87 atm.
Explanation:
Data given:
total pressure of all the gases in the flask = 1.87 atm
partial pressure of krypton gas = 0.77 atm
partial pressure of helium gas = 0.62 atm.
partial pressure of neon =?
from the data given in question it is deduced that neon gas is also present in the flask.
from the Dalton's law of pressure:
Ptotal = pkrypton + phelium +p neon (p= partial pressure of individual gases)
pneon = Ptotal - pkrypton + p helium
pneon = 1.87 - (0.77 + 0.62)
pneon = 1.87 - 1.39
pneon = 0.48 atm
The partial pressure of the neon gas is 0.48 atm in the flask.
Answer:
1. In black 6 dyes were used and in green 3 dyes were used
2. 7 dyes were used overall
3. 2-3 blues were used
4. yellow in brown and orange are similar shade
Not sure about the other image
