The addition of sodium chloride to pure water, causes the conductivity to _________.
Answers
Answer:
its increase got it right
Explanation:
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Background Info:The standard enthalpy of formation (ΔH∘f) is the enthalpy change that occurs when exactly1 mol of a compound is formed from its constituent elements under standard conditions. The standard conditions are 1 atm pressure, a temperature of 25 ∘C , and all the species present at a concentration of 1 M . A "standard enthalpies of formation table" containing ΔH∘f values might look something like this:SubstanceΔH∘fH(g)218 kJ/molH2(g)0 kJ/molBa(s)0 kJ/molBa2+(aq)−538.4 kJ/molC(g)71 kJ/molC(s)0 kJ/molN(g)473 kJ/molO2(g)0 kJ/molO(g)249 kJ/molS2(g)129 kJ/molQuestion:What is the balanced chemical equation for the reaction used to calculate ΔH∘f of BaCO3(s)?If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for aqueous solution.EXPRESS ANSWER AS A CHEMICAL EQUATION. Please explain for me too!!!
A maritime polar air mass is a cold air mass that forms over which two oceans
Which isotope will spontaneously decay and emit particles with a charge of +2?(1) 53Fe (3) 198Au(2) 137Cs (4) 220Fr
In the chemical equation Zn + 2HCl ZnCl2 + H2, the reactants are A. zinc and hydrochloric acid. B. zinc and hydrogen carbonate. C. zinc chloride and hydrogen. D. zinc chlorate and water.
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Answer:
its caused by the convection of air masses with differences in densities mainly due to their differences in temperatures.
-Hops
A. they remain level since densities in both plates are equal.
B. they both push back down into the mantle
C. one plate rides over the other one and forms a trench
D.they buckle upward and form mountains
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Answer:
D. They buckle upward and form mountains.
Explanation:
When two plates (either oceanic or terrestrial) converge and they are of similar density then they will crash into each other and form mountains. A great example of this is when India crashed into the Asian continent and the Himalayas were formed.
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The concentration of the solution has been 0.17 M.
The molarity has been defined as the moles of solute that has been dissolved in a liter of solution. The molarity of the solution has been expressed as:
Computation for Molarity of the solution
The molar mass of sodium chloride solution has been 58.5 g/mol.
The given mass of NaCl in the solution has been 0.5 grams.
The volume of NaCl solution has been 0.05 L.
Substituting the values for molarity of the solution:
The concentration of the solution has been 0.17 M. The solution has been prepared by dissolving 0.5 g NaCl in minimal water, and makeup the volume to 0.05 L.
Learn more about molarity, here:
I hope this helps. Let me know in the comments if anything was unclear or if you were asking a different question.
2) Ester
3) Aldehyde
4) Amino Acid
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The answer to your question is D. none of the above. Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms) gains or loses electrons. (A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. I hope this helps.
Answer:
The answer is C. a metal and a nonmetal.
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This bond is formed between two non metals. Example:
An ionic compound is formed when one element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal. Example:
Thus an ionic compound is typically made of a metal and a nonmetal.