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3 years ago

WHATS THE DIFFERENCE BETWEEN Fe AND FE2+

Chemistry

1 answer:

Grace [21]3 years ago

4 0

Answer:

Fe is just the shortened version of Iron whereas Fe2+ is a positive ion,cation to be more specific

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2. Name each of the following ionic compounds A. K2O B. Cacl2. C. Mg3N2 D. NaCIO E. KNO3

Ludmilka [50]

A. Potassium oxide
B. Calcium chloride
C. Magnesium nitride
D. Sodium hypochlorite
E. Potassium nitrate

3 0

3 years ago

Count the total number of atoms in the chemical formula 5H2O2

SVEN [57.7K]

Answer:

20 atoms

Explanation:

There are 4 in H2O2 because of 2 hydrogens and 2 oxygens.

Then, multiply by 5 because the coefficient is 5, therefore there are 5 H2O2 molecules.

5 x 4 = 20

5 0

2 years ago

What is the density of a cube that has a mass of 25 g in a volume of 125 cm 3

GalinKa [24]

The density of an object is defined to be its mass divided by the volume it occupies. For this problem, the mass of the cube was given to be 25 g while its volume is 125 cm³. Thus, we simply divide 25 g by 125 cm³ to get the object’s density. We then calculate that the cube has a density of 0.2 g/ cm³.

3 0

3 years ago

If 0.089 grams of KI is dissolved in 500g of H2O, what is the concentration of the resulting solution in parts per million?

frez [133]

Answer:

The concentration of the resulting solution in parts per million is 177.97

Explanation:

Parts per million (ppm), is a unit of measure for concentration that refers to the number of units of the substance per million units of the set.

The concentration in parts per million expressed in mass / mass is calculated by dividing the mass of the solute (ms) by the mass of the solution (md, sum of the mass of the solute and the mass of the solvent), both expressed in the same unit and multiplied by 10⁶ (1 million).

$ppm=\frac{ms}{md} *10^{6}$

So, being:

ms: 0.089 grams of KI

md: 0.089 grams of KI + 500 grams of H₂O= 500.089 grams

Replacing:

$ppm=\frac{0.089 grams}{500.089 grams}*10^{6}$

ppm= 177.97

The concentration of the resulting solution in parts per million is 177.97

6 0

3 years ago

What is the name of the compound with the formula niso3?

serg [7]

Nickle (II) sulfite - b/c the charge on Ni can be +2 or +3 i Believe. SO3 has a charge of -2 the you need nickel II (+2) to make a proper ionic bond

3 0

3 years ago