- A compound has an empirical formula of CH and its molecular mass is 78. Calculate its
molecular formula(Solved)
A compound has an empirical formula of CH and its molecular mass is 78. Calculate its
molecular formula
Date posted: April 8, 2019. Answers (1)
- A compound was analyzed and found to contain 13.5 g Ca, 10.8 g O, and 0.675 g
H. What is the empirical formula of the compound?(Solved)
A compound was analyzed and found to contain 13.5 g Ca, 10.8 g O, and 0.675 g
H. What is the empirical formula of the compound?
Date posted: April 8, 2019. Answers (1)
- Calculate the empirical formula of a compound composed of 38.67 % C, 16.22 % H, and
45.11 %N(Solved)
Calculate the empirical formula of a compound composed of 38.67 % C, 16.22 % H, and
45.11 %N
Date posted: April 8, 2019. Answers (1)
- What is the empirical formula of a compound that contains 27.3% carbon and 72.7%
oxygen by mass?(Solved)
What is the empirical formula of a compound that contains 27.3% carbon and 72.7%
oxygen by mass?
Date posted: April 8, 2019. Answers (1)
- How many molecules of hydrogen gas, H2 occupy 0.500 L at STP?
We want molecules H2; we have 0.500 L H2(Solved)
How many molecules of hydrogen gas, H2 occupy 0.500 L at STP?
We want molecules H2; we have 0.500 L H2
Date posted: April 8, 2019. Answers (1)
- What is the density of ammonia gas, at STP?(Solved)
What is the density of ammonia gas, at STP?
Date posted: April 8, 2019. Answers (1)
- How many moles of Fe are in 5.6 g Fe? How many Fe atoms are contained in the sample?(Solved)
How many moles of Fe are in 5.6 g Fe? How many Fe atoms are contained in the sample?
Date posted: April 8, 2019. Answers (1)
- What type(s) of intermolecular forces exist between the following pairs: (a) HBr and H2S,(b) Cl2 and CBr4(Solved)
What type(s) of intermolecular forces exist between the following pairs: (a) HBr and H2S,
(b) Cl2 and CBr4
Date posted: April 8, 2019. Answers (1)
- What is the meaning of the term resonance?(Solved)
What is the meaning of the term resonance?
Date posted: April 8, 2019. Answers (1)
- Explain the following inter molecular forces in compounds.(Solved)
Explain the following inter molecular forces in compounds.
a)Dipole-dipole forces
b)Hydrogen bonding forces.
Date posted: April 8, 2019. Answers (1)
- With a well elaborated diagram illustrate the dative bonding in Ammonium ion.(Solved)
With a well elaborated diagram illustrate the dative bonding in Ammonium ion.
Date posted: April 8, 2019. Answers (1)
- Define Co-ordinate (dative covalent) bonding(Solved)
Define Co-ordinate (dative covalent) bonding
Date posted: April 8, 2019. Answers (1)
- Define covalent bond.(Solved)
Define covalent bond.
Date posted: April 8, 2019. Answers (1)
- Outline properties of ionic compounds(Solved)
Outline properties of ionic compounds
Date posted: April 8, 2019. Answers (1)
- Consider the reaction of sodium (a Group IA metal) with chlorine (a Group VIIA nonmetal).Show the bonding between the two elements.By drawing the electronic configurations.(Solved)
Consider the reaction of sodium (a Group IA metal) with chlorine (a Group VIIA nonmetal).Show the bonding between the two elements.By drawing the electronic configurations.
Date posted: April 8, 2019. Answers (1)
- Define the following terms. (i)Chemical bond. (ii)Ionic bonding(Solved)
Define the following terms.
i)Chemical bond.
ii)Ionic bonding
Date posted: April 8, 2019. Answers (1)
- Giving examples in each case,give a brief description of the following chemical families.(Solved)
Giving examples in each case,give a brief description of the following chemical families.
i)Group IA
ii)Group IIA
iii)Group IIIA
iv)Group VIIIA
v)f-Transition Elements
Date posted: April 8, 2019. Answers (1)