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What is the symbol of an ion with 16 protons, 18 neutrons, and 18 electrons?
The number of protons is equal to the atomic number, which is unique to each element. The atomic number with the symbol can be found on the
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Complete Guide To Acids and Bases: Definitions, Strength, pH Scale, Calculating pH of Strong Acids and Strong Bases
Table of Contents Arrhenius Acid Base Definitions Bronsted-Lowry Acid Base Definitions Conjugate Acid-Base Pairs Lewis acid Base...
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Consider the equilibrium N2O4(g) <---> 2NO2 (g) ΔH = 58.0kJ In which direction will the equilibrium shift when a. N2O4 is added
Consider the equilibrium N2O4(g) <---> 2NO2 (g) ΔH = 58.0kJ In which direction will the equilibrium shift when a. N2O4 is added b. NO2 is...
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Stoichiometry Using Balanced Equations: How to Go From Grams/Moles of A to Grams/Moles of B
Coefficients in a balanced chemical equations represent molar ratios. For example if we have 2A+ 3B -->C, this means that 2 moles of A...
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What solution volume is needed to prepare a 0.110 M solution of MgSO4 using 10.3 g of the compound?
The molar mass of MgSO4 is 120.366 g/mol (A) 9.41x10-3 L (B) 0.778 L (C) 1.11 L (D) 93.6 L Solution: Molarity = moles of solute/ Liters...
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What is the strongest electrolyte in dilute aqueous solution?(A) HCI04 (B) HCN (C) HF (D) H
(A) HCIO4 (B) HCN (C) HF (D) HNO2 Solution: Strong electrolytes are substance that can conduct electricity by producing charged particles...
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What is the oxidation number of Mo in MoO4^2-?
(A) +2 (B) +4 (C) +6 (D) +8 Solution: Let's first go over some rules for determining the oxidation number. Rules for determining...
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Which reaction will result in a precipitate?
(A) FeCl2(aq) + Na2S(aq)---> (B) H2SO4(aq) + NaOH(aq)---> (C) KCl(aq) + CaBr2(aq)---> (D) Zn(NO3)2(aq) + Hl(aq)---> Solution: These are...
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As water is being added to a concentrated NaOH solution
As water is being added to a concentrated NaOH solution (A) the moles of solute are decreasing, and the molarity is increasing. (B) the...
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What mass (in g) of sodium ions, Na+, are there in 25 mL of 0.75 M Na2SO3?
(A) 0.019g (B) 0.87g (C) 2.4 g (D) 4.8g Solution: Molarity= moles of solute/L of solution Molarity = 0.75M Volume = 25ml (1L/1000ml) =...
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