Answer:
The volume of ammonia produced by 4.2 L of hydrogen and excess nitrogen is 2.8 L.
Explanation:
Given data:
Volume of H₂ = 4.2 L
Volume of NH₃ produced = ?
Solution:
First of all we will write the balance chemical equation:
N₂ + 3H₂ → 2NH₃
Hydrogen is limiting reactant and volume ratio is,
H₂ : NH₃
3 : 2
4.2 : 2/3 × 4.2 = 2.8 L
The volume of ammonia produced by 4.2 L of hydrogen and excess nitrogen is 2.8 L.
Answer:
SO₄(aq) + Ba(aq) + ----> BaSO₄(s)
Explanation:
(aq) will always become 2 ions
balancing the equation
Na₂SO₄(aq) + BaCl₂(aq) ----> BaSO₄ + 2NaCl
note how there is the same amount of each element on both sides except for Na and Cl. the left side has 2 times the amount of the right side. All I needed to do to balance was add the 2 coefficient to NaCl product on right side since Na and Cl are together and not in separate compounds.
now rewriting (NaCl is aq since all compounds with Na are aqueous)
barium sulfate is the solid formed
rewriting the equation: (subscripts of single elements become coefficients, polyatomic subscripts stay)
2Na(aq) + SO₄(aq) + Ba(aq) + 2Cl(aq) ----> BaSO₄(s) + 2Na(aq) + 2Cl(aq)
net ionic: removing any substance seen on both sides
SO₄(aq) + Ba(aq) + ----> BaSO₄(s)
Answer:
Explanation:
Carbon disulphide is the liquid that can be used to separate iron fillings and sulphur powder.
When carbon disulphide is poured into the dish, the sulphur powder gets easily dissolved in the carbon disulfide. The iron fillings are left to settle on the bottom of the dish.
The iron fillings can get seperated through filtration. When the mixture of sulphur powder and carbon disulphide gets completely evaporated, the sulphur powder is left over.
The answer is
Physical properties: Properties that do not change the chemical nature of matter
Chemical properties: Properties that do change tha chemical nature of matter
Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. There are many more examples. Note that measuring each of these properties will not alter the basic nature of the substance.
Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force.