Explanation:
3.4000x 10-6 +5.7000x 10-3
now we can add them
The charge on Calcium is +2. Since, Calcium oxide is a neutral compound, so the charge on Oxygen should be -2. <span>Valency of Oxygen is 2, so a single Oxygen atom can satisfy the need.
Therefore, formula is CaO.</span>
Answer:
4.22 g/mL
Explanation:
First we <u>calculate the mass of the solid</u> via <em>mass difference</em>:
- Mass of solid = 9.441 g - 1.005 g = 8.436 g
Then we <u>calculate the volume of the solid</u>, once again by difference:
- Volume of solid = 5.45 mL - 3.45 mL = 2.00 mL
Finally we <u>calculate the density in g/mL</u>:
- Density = 8.436 g / 2.00 mL = 4.22 g/mL
Most common mineral acids solutions (HCl, H2SO4, HNO3, H3PO4, etc.) are prepared in water. Infact, system is<span> acidic only in aqueous medium.
</span>
However, in few cases, it isn't advisable/viable to perform reaction is aqueous medium. This can be due to poor solubility of reactant in water. This situation arises especially, if reactant is highly non-polar in nature.
There also exist a possibility that, reactant is not stable in aqueous medium. In such event, use of water has to be avoided.
For such reaction, solid camphorsulfonic acid is added in reaction, when acid is required to initiate/catalyst the reaction.
The major advantage that camphorsulfonic acid offers is that, it is solid and hence it is easy to weight. Also, they don't required water addition for the reaction.
Answer:
The average atomic mass is 86.565
Explanation:
An element's average atomic mass is the sum of the products of the masses of the isotopes of the element and their percentage abundance divided by 100
The average atomic mass of the Element X is given as follows;
Isotope type 1 (85.91) ×
Isotope Abundance (%) Mass /100 Portion of average mass
Type 1 67.25 × 85.91 ÷ 100 57.774475
Type 2 32.75 × 87.91 ÷ 100 28.790525
Average atomic mass = 86.565
The average atomic mass = 86.565.