Known: V source = 30.0 V
, R1 = 15.0 W, R2 = 15.0 W, R3 = 15.0 W
To determine the current, first find the equivalent resistance.
I = Vsource/R and R = RA + RB
= Vsource/RA + RB
30.0 V/15.0 W + 15.0 W + 15.0 W
= 1.5 A
This is as far as I could do the work for this question. I’m having trouble..
Here is my work** Can someone please tell me if this is correct?
mass = 27.8 g CaCI2
Number of CaCI2 in the compound = (unknown)
Number of CI- ions in the compound = (unknown)
Number of moles = mass/molar mass
To find the number of moles of CaCI2 first you find the molar mass of the compound.
1...
Atoms-to-mass conversion
Step 1: First, convert the number of atoms to moles
To convert from atoms to moles, divide the atom amount by Avogadro's number (6.02 x 10^23 atoms), or multiply by its reciprocal.
Step 2: Then convert moles to grams
To convert the moles of a substance to grams, you...
Atoms-to-mass conversion
Step 1: First, convert the number of atoms to moles, then convert moles to grams
To convert from atoms to moles, divide the atom amount by Avogadro's number (6.02 x 10^23 atoms), or multiply by its reciprocal.
Step 2: Second, use the inverse of the Avogadro’s...
So, would I include this too?
Atoms-to-mass conversion
Step 1: First, convert the number of atoms to moles, then convert moles to grams
Step 2: Second, use the inverse of the Avogadro’s number(moles to number of atoms)
Step 1 To convert from atoms to moles, divide the atom amount by Avogadro's number (6.02 x 10^23 atoms), or multiply by its reciprocal.
Step 2 To convert the moles of a substance to grams, you will need to multiply the mole value of the substance by its molar mass.
Grams * 1 mole/grams = moles
Atoms-to-mass conversion
Step 1: First, convert the number of atoms to moles, then convert miles to grams
Step 2: Second, use the inverse of the Avogadro’s number(moles to number of atoms)
Are these the correct steps?
The ion Fe3+, for example, has an oxidation number of +3 because it canacquire three electrons to form a chemical bond, while the oxygen ion O2− has an oxidation number of −2 because it can donate two electrons.