D=m/v ⇒ v=m/d
d=density
m=mass
v=volume
Density (Fe)=7.86 g/cm³=7.86 g/ ml
m=4.18 Kg.(1000 g/1Kg)=4180 g
v=m/d=(4180 g) / (7.86 g/ml)=531.8 ml
v=531.8 ml*(1 dl / 100 ml)=5.32 dl
v=5.32 dl
It's sodium chloride.
sodium chloride is table salt which is a pure substance. it's a compound but not a mixture.
note that iodized salt is a mixture, but we're just talking sodium chloride here.
Following the rule of thumb in dilution, the equation that can be used to solve this problem is:
C1V1 = C2V2
where:
C1 = concentration of solution 1
V1 = volume of solution 1
C2 = concentration of solution 2
V2 = volume of solution 2
(0.1)(V1) = (0.05)(750)
V1 = 375 mL
This shows that 375 mL of a 0.1 m NaHCO3 solution is needed in order to dilute it to a 0.05 m NaHCO3 solution of 750 mL.
Answer:
Original temperature (T1) = - 37.16°C
Explanation:
Given:
Gas pressure (P1) = 2.75 bar
Temperature (T2) = - 20°C
Gas pressure (P2) = 1.48 bar
Find:
Original temperature (T1)
Computation:
Using Gay-Lussac's Law
⇒ P1 / T1 = P2 / T2
⇒ 2.75 / T1 = 1.48 / (-20)
⇒ T1 = (2.75)(-20) / 1.48
⇒ T1 = -55 / 1.48
⇒ T1 = - 37.16°C
Original temperature (T1) = - 37.16°C
They have ions that produce an electrostatic pull.
Nonmetallic elements normally form covalent bonds because of their high ionization energies and therefore, strong attraction for their valence electrons
