Calculate the pH at 25 °C of a 0.68M solution of potassium cyanide (KCN). Note that hydrocyanic acid (HCN) is a weak acid with a pk of 9.21. Round your answer to 1 decimal place. -0 pH = X

Q: When 12.7 and 97.0 are multiplied, the answer should be reported to significant digit(s). The…

A: Rules for determining the number of significant figures in an answer :The result of an addition or…

Q: When a very large number is written in scientific notation shut the exponent be a positive or a…

A: Scientific notation: Scientific notation is a way of expressing numbers in decimal form with…

Q: Convert 7500 ft to km Write your answer on the blank below, with the correct number of significant…

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Q: A 3.23 liter glass bottle is full of oil. Assume it contains 3.23 L of oil. The density of oil is…

A: Given datas –  V = 3.23 L = 3230 mL  density of oil = 1.23 g/mL  mass of glass bottle = 287 g…

Q: 1000 mL = 1 L Convert 310.0 mL to L. Please include the proper unit and correct number of…

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Q: Perform the indicated math operation, and round off the answer to the correct number of significant…

A: Significant figure calculation rule used in multiplication or division: The number of significant…

Q: The number 18.01937 rounded to 3 significant figures is

A: Rounding a number to three significant figures in the same way ,rounding to three decimal places.…

Q: What is the answer with the correct number of decimal places for this problem? 4.392g +102.40g+2.51g…

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Q: Calculate the pH and percent ionization of a 0.890 M HNO₂ solution. Note: Reference the K, of acids…

A: Given,Molarity of HNO2 = 0.890 MFrom the reference,      Ka = 4.5 x 10-4

Q: 0.0590x8.105æ10 1.8x10-3

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Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: Using the arithmetic problem below, determine the correct number of significant figures.…

A: Rules for determining the number of significant figures in an answer : The result of an addition or…

Q: Express your answer to the appropriate number of significant figures 2.5-1.803 2.5-1.803

A: Significant figures rule for addition and subtraction  From this rule we get that ; The Final…

Q: Round off or add zeros to calculate answers to give a final answer with three significant figure…

A: The rules for significant figures are: 1)  Zeros between two non-zero digits ARE significant. 2) All…

Q: Determine the precision of the graduated cylinders, and get the volume with the right significant…

A: Significant figures are the digits of numbers that are the accurate and more reliable value of data.…

Q: Round to the correct amount of Significant figures (218.6-218.59)+0.03

A: To determine the number of  significant figures in a number we have to follow the following rules…

Q: The density of a mahogany wood is said to be 497 - 849 kg/m3, compute the values to g/mL and g/cm3.…

A: 1kg = 1000g  1m3 = 1000L 1L = 1000mL 1m3 = 1000 × 1000mL  1 m3 = 106mL Now we have 497kg/m3

Q: How do I determine which value is the most precise and which value is the most accurate when given 4…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: Select the answer that expresses the result of this calculation rounded to the correct number of…

A: Before calculations certain rules should be understood for significant digits. All of the non-zero…

Q: Round to 1 significant figure 0.141700 1.10951 Round to 2 significant figures 3.00000 10.7190…

A: By following significant figure rule we can round off the given numbers to appropriate number of…

Q: Perform the following calculation and input the answer expressed to the correct number of…

A: Non zero digits are always significant.

Q: The density of mercury is 13.6 g/cm3. The mass of 38.0 cm3 of mercury is ________ g.

A: According to the rules for determining the number of significant digits in answer :  The result of…

Q: To the correct number of significant figures calculate log(4.399x104).

A: Significant figures are the digits of a number that have meaning in terms of accuracy or precision.

Q: Given that there are 2.2 lbs per I kg and 16 ounces per I pound, how many oz are there in 13 g?…

A: Given: Mass in g = 13 g.

Q: Convert the following number to standard notation: -8.765 x 10-2 Group of answer choices -876.5…

A: Standard notations also are known as scientific notations.  The following number can be converted…

Q: I need it the answer in decimal form and with only 3 significant figures.

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Q: would this answer be following the correct number of significant figures

A: For a given question, the answer should be reported in required number of significant figures if…

Q: How many liters of H₂ are created from the reaction of 20.0 g potassium (K) with an excess of water?…

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Q: Write each of the following numbers to 3 significant figures in exponential or scientific notation.…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Can you please fix this answer to be in decimal form in the correct amount of significant figures?…

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Q: When doing significant figures when adding subtracting, multiple how do I know how many decimals…

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Q: Are all of these in 2 decimals?

A: A decimal number is a number whose whole number part and the fractional part is separated by a…

Q: Numbers which are not the results of measurements are not considered significant figures.   True or…

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Q: Solve following using Significant figure rules - (2502.20 x 21.00)/ 3.0

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Q: If l = 3, how many values of ml are possible? --

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Q: the first 2 need 1 more significant figure

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Q: 1 answer pls

A: Significant figures of a number that contribute to the degree of accuracy of the value.

Q: Express the answers to the following operations with the proper number of significant figures. A.…

A: In addition and subtraction, the answer should be in the significant figures that are minimum for…

Q: The average temperature at the South Pole in June is -37.1 °C. Convert this temperature to degrees…

A: The value is provided according to the questionThe average temperature at the south pole T = -37.1…

Q: Perform the following computation using your calculator: (report your answer to at least 3 decimal…

A: To perform this calculation, we first need to multiply 1.94 * 10^-2 by -3.537 to get -0.0686178…

Q: To what decimal place should each answer be rounded? How many significant figures d A. 9 cm + 2.8 cm…

A: -> If numbers are added and substrated then answer comes in least number of decimal places.->…

Q: -23 in oxygen atom has a mass of 2.66 x 10 g and a glass of water has a mass of 0.050 kg. se this…

A: Here we are required to find the mass of 1 mol of oxygen atom.

Q: Consider the following operations on the number 3.71x10-2 Without using a calculator, decide which…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: of significant figures in

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Q: Evaluate 52.00 cm + 15.550 cm  report answer to the correct number of decimal places and include…

A: Significant figures are the number of digits in a measurement that grant the degree of accuracy of…

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.