Because we're asked to calculate the molarity of nickel(II) cation, we need to determine all sources for that species, in this case, all Ni⁺² comes from the nickel(II) bromide solid (NiBr₂).

We use the molecular weight of NiBr₂ to calculate the moles of Ni:

1.87 g NiBr₂ ÷ 218.49g/mol * (1molNi⁺²/1molNiBr₂) = 8.55x10⁻³ mol Ni⁺²

Then we divide the moles by the volume in order to calculate the concentration:

8.55x10⁻³ mol Ni⁺² / 0.200 L = 0.0428 M

7 0

2 years ago

What causes the difference genetically identical organisms

snow_lady [41]

Answer:

the epigenetic perspective. ... Such variation among organisms with virtually identical chromosomal DNA sequences has largely been attributed to the effects of environment.Explanation:

6 0

2 years ago

Balanced Equation: C3H,OH,) + __02 - __CO2 + H20

gavmur [86]

2C3H7OH + 9O2 → 6CO2 + 8H2O

8 0

2 years ago

What particle has a positive electrical charge and is found in the nucleus?

Virty [35]

Electron is the answer

4 0

2 years ago

Read 2 more answers