Answer:
Strong acid
Explanation:
An acid is a substance that interacts with water to produce excess hydroxonium ions in an aqueous solution.
Hydroxonium ions are formed as a result of the chemical bonding between the oxygen of water molecules and the protons released by the acid due to its ionisation. This makes aqueous solution of acids conduct electricity.
A strong acid is one that ionizes almost completely. Examples are:
1. Hydrochloric acid
2. Tetraoxosulphate (VI) acid
3. Trioxonitrate (V) acid
4. Hydroiodic acid
5. Hydrobromic acid
Answer:
The answer is the first option 0.37 moles
Explanation:
the ideal gas law is PV = nRT, so in the terms of n,
n = PV/RT (divide both sides by RT to let n stand alone)
given: P = 700 kpa, V = 2L, T = 450 K , R = 8.31
n = (700 * 2) / (8.31 * 450)
= 1400/3739.5
= 0.34
The best method for separating two liquids in a mixture is distillation among the choices. Distillation separates liquids in terms of their volatility. Evaporation separates liquid from solid. This also applies for filtration which applies porous media for separation. Sorting is applied for two or more different kinds of solids. Answer is distillation.
Chlorine, Anthax is a biological agent, and uranium is a radioactive agent, and dynamite is just a no. Chlorine is a chemical gas.
Answer:
4.7 g
Explanation:
The reaction that takes place is:
- 3CaCl₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaCl(aq)
First we <u>convert 4.8 g of CaCl₂ into moles</u>, using its <em>molar mass:</em>
- 4.8 g ÷ 110.98 g/mol = 0.0432 mol CaCl₂
Then we<u> convert CaCl₂ moles into Na₃PO₄ moles</u>, using the <em>stochiometric coefficients of the balanced reaction</em>:
- 0.0432 mol CaCl₂ *
= 0.0288 mol Na₃PO₄
Finally we <u>convert 0.0288 moles of Na₃PO₄ into grams</u>, using it<em>s molar mass</em>:
- 0.0288 mol Na₃PO₄ * 164 g/mol = 4.7 g
