ANSWER:
there are 0.05 moles
<h3>1. what is a typical characteristic of an ionic compound?</h3><h3>Answer:</h3>
Option-D : The ionic compound has a high melting point.
<h3>Explanation:</h3>
Ionic compounds are made up of positive ions called cations and negative ions called as anions. Cations are formed when an atom or group of atoms looses one or more electrons while, anion is formed when an atom or group of atoms gains electrons.
The two opposite ions formed interact through electrostatic interactions and form one of the strongest intramolecular bonding called ionic bonding. It requires very high energy to separate these ions from each other in solid form.
Examples: Melting Point of NaCl = 801 °C
Melting Point of MgCl₂ = 714 °C
Melting Point of CaCO₃ = 825 °C
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<h3>2. what is shown by the structural formula of a molecule?</h3><h3>Answer:</h3>
Option-A : The arrangement of bonded atoms.
<h3>Explanation:</h3>
Structural formula is the graphical representation of of a chemical formula in either two dimensional or three dimensional space. It helps in depicting the arrangement of atoms or group of atoms in a compound or molecule.
Examples:
Below the attached figure shows the structural formula of Glucose with Chemical formula C₆H₁₂O₆, Sulfuric Acid with Chemical formula H₂SO₄ and Water with Chemical formula H₂O respectively.
■<em> </em><em>L</em><em>i</em><em>N</em><em>O</em><em>3</em><em> </em><em>=</em><em> </em><em>Lithium nitrate Inorganic compound with the formula LiNO₃. It is the lithium salt of nitric acid. It is obtained from the reaction of lithium carbonate or lithium hydroxide with nitric acid.</em>
■ <em>CaO</em><em> </em><em>=</em><em> </em><em>Calcium oxide (CaO) or quicklime is a kind of chemical compound with a wide range of uses.</em>
■ <em>C</em><em>2</em><em>N</em><em>2</em><em> </em><em>=</em><em> </em><em>Cyanogen is the chemical compound with the formula formula (CN). It is a colorless, toxic gas with a pungent odor. The molecule is a pseudohalogen. Cyanogen molecules consist of two CN groups - similar to diatomic halogen molecules such as Cl₂, but much less oxidizing</em><em>.</em>
■ <em>M</em><em>g</em><em>S</em><em>O</em><em>4</em><em> </em><em>=</em><em> </em><em>Magnesium sulfate is an inorganic salt (chemical compound) with the chemical formula MgSO4, containing magnesium, sulfur and oxygen.</em>
■ <em>Fe2O3 = Iron Oxide; It has compounds such as iron chromate (FeCrO4), Iron Phosphate (Fe2P), Iron Sulphide (FeS). Iron oxides in black iron oxide (FeO), red (Fe203) and black (Fe3O4) colors give beige, yellow, brown, red, black colors according to their additive ratios.</em>
■ <em>P3N5</em><em> </em><em>=</em><em> </em><em>Triphosphorus pentanitride is an inorganic compound with the chemical formula P formulaN₅. Containing only phosphorus and nitrogen, this material is classified as a binary nitride. No application has been developed for this material. It is a white solid, but samples often appear colored due to impurities.</em>
<h3>
<em><u>I hope I got it right, I'm trying to improve my English a little :)</u></em></h3>
<h3>
<em><u>I tried really hard, can you choose the best?</u></em></h3>
<h2>
<em><u>Greetings from Turkey</u></em><em><u>:</u></em><em><u>)</u></em></h2>
<h2>
<em><u>#XBadeX</u></em><em><u> </u></em></h2>
It is important to establish the true weight of the crucible because it is a necessary reference point. Later, you will be weighing the crucible to determine how much of the products are present, so it's necessary to have the true tare weight of the crucible.
<span>The crucible is heated to be sure it is free of any moisture or other volatiles that might otherwise give a misleading weight. If you start out with the crucible absolutely clean and dry, (after heating) then you know that any additional weight must have come from the sample.</span>
Answer: option 3. 5.46 L
Explanation:
1)<u> Data</u>
2) <u>Chemical principle</u>
<u />
- Combined law for ideal gases:
3) <u>Solution</u>
a) Conversion of units
The ideal gas law is valid for temperature in absolute units (Kelvin); hence, you have to converte °C to K.
- T₁ = 55.0 + 273.15 K = 328.15 K
- T₂ = 59.0 + 273.15 K = 332.15 K
b) Clear V₂ from the combined law of gases
c) Substitute values and compute
The answer must be reported with three significant figures, which is the number used for the data.
Answer: the gas will ocupy 5.46 liter at the new condictions of pressure and temperature.