number of significant figures and units.

Q: The number 8.588682 rounded to 2 significant figures is: The number 701.9951 rounded to 3…

A: Significant figures are the digits of the number that contribute to accuracy. They are all…

Q: Methanol is an attractive fuel source in a sustainable, green economy. The chemical energy inherent…

A: Consider the following reaction for the decomposition of methanol: 2CH3OH(l)  →  2CH4(g) + O2(g)…

Q: 50. Round each number to three significant figures.(a) 10,776.522 (b) 4.999902 * 106(c) 1.3499999995…

A: Significant numbers are the digits in a number which is important and provide reliability about the…

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: 4. A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute…

A: Molar concentration, also known as molarity, is defined as the number of moles of solute present in…

Q: What is the minimum mass of galena PbS, a lead ore, from which 7.5kg of pure lead could be…

A: Given data  7.5kg of pure lead (Pb) find minimum mass of galena PbS,

Q: (1.00866 – 1.00716) d. 6.02205 x 1023 9.875 x 102 – 9.803 x 10? x 100 = |(100 is exact) 9.875 x 102…

A: According to the rule for significant digits in addition and subtraction, the number of significant…

Q: How many significant figures do the following numbers contain? (a)   1.233 + .1    (b)   1.233*.1…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: What would be the reading of the liquid in the following graduated cylinder, reported to the proper…

A: Given is graduated cylinder.  We measure reading at lower meniscus.

Q: At what temperature (in °C) would a 0.00550 M solution of glucose in water exhibit an osmotic…

A: By using relation of osmotic pressure, π= cRT where π is osmotic pressure.

Q: The number 5492.517 rounded to 3 significant figures is?

A: 5490

Q: 49. Round each number to four significant figures.(a) 255.98612 (b) 0.0004893222(c) 2.900856 * 10-4…

A: The following rules can be followed to round up the final answer to the significant figures.…

Q: 2. Chlorine trifluoride is a colorless, poisonous, and corrosive gas. It is produced from the…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: Round 0.03982 to 3 significant figures and put in scientific notation.

A: Since we know that significant figures are the digits of a number that are meaningful in terms of…

Q: An experimenter has weighed a penny 6 times in units of grams as reported below. 2.224842 3.168283…

A: The objective of this question is to calculate the average weight of a penny based on the given…

Q: The Daily Value for phosphorus is 900 mgmg. How many grams of phosphorus are recommended? Express…

A:

Q: When 0.0005760 is written in proper scientific notation with the correct number of significant…

A: Rules for determining significant figures,All non-zero digits are significantThe zeros placed to the…

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: The data gathered can be presented in a table. Which of the following is NOT included in labeling…

A: Which of the following is not included in labelling the table in presenting the data to be analyzed?…

Q: What are the significant rules to be followed to determine the number of significant figures in a…

A: Significant figure represents all the digits of a number that are significant with respect to…

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

A: Isotopes are atoms of the same element that differ in the numbers of neutrons in the nucleus. These…

Q: Question 1 If 85 mL of 0.548 M NAOH is diluted to a total volume of 152 mL, what is the molarity of…

A: • Molarity of the diluted NaOH, can be calculated by using the Molarity relationship. • This…

Q: When multiplying or dividing measured quantities, what determines the number of significant figures…

A: The significant figures of a number written in positional notation are digits that carry meaningful…

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: A cyclist rides at an average speed of 26 miles per hour, If she wants to bike 180 km, how long (in…

A: Please find your solution below : Speed is defined as the distance travelled per unit time. In other…

Q: Average of the following data: 30.2 mM, 30.45 mM, 30.38 mM, 3.05 × 10²M

A: Calculate average of the given data ---

Q: Which of the following are CORRECT regarding significant figures? In your answer, please list the…

A: Significant Figures: These are digits used to express the precision of a quantity. The numbers that…

Q: A sample of 0.225 mole of gas has a volume of 748 mL at 28°C. Calculate the pressure in atm of this…

A:

Q: If you are walking at a speed of 2.5 miles an hour how fast are you moving in kilometers a min.…

A: The speed in kilometers (km) per minutes, it is to be determined. Given: speed = 2.5 miles/hr 1 mile…

Q: A chemist prepares a solution of calcium sulfate (Caso,) by measuring out 0.14 µmol of calcium…

A: A micromole = 10-3 mmole

Q: (8.71× 0.0301) 0.056

A:

Q: Ammonia chemically reacts with oxygen gas to produce nitric oxide and water. What mass of ammonia is…

A: Moles of oxygen can be calculated as:

Q: 1. An object was carefully weighed on three different balances. Each balance was zeroed before…

A: Absolute error: magnitude of the difference between the measured value and the true value. Relative…

Q: When numbers are very small or very large, it is convenient to either express the value in…

A: Scientific notation: Scientific notation is a way of expressing numbers to be conveniently written…

Q: Sulfur dioxide and oxygen react to form sulfur trioxide, like this: 280,(2)+0,(2) 280,(8) Suppose a…

A: As per Le Chatelier's principle if any equilibrium system is disturbed(by changing temperature,…

Q: Calculate the density of an unknown solid (g/ml) = A top-loader balance measured the mass of the…

A: Density = mass÷ volume Number of moles = mass ÷ molar mass

Q: what determines how many figures are significant in reported measurement values? What would be the…

A: In reporting measured values, the degree of uncertainty of a number read from a measurement…

Q: given 310. a number. Identify the number of significant figures this number has.

A: The question is based on the concept of significant figures.We need to identify number of…

Q: What was the original pressure

A: Given : initial volume = 5.00 L               Final volume = 12.0 L               Final pressure =…

Q: 1 2

A: We read buret in mL unit.

Q: Suppose 3.5 g of Compound A and 8.5 g of Compound B are consumed in a reaction that produces only…

A: To solve this problem we will use Law of Conservation of mass . According to this law  Mass of…

Q: Which of the following measurements has the correct significant figures for a graduated cylinder…

A:

Q: he given graduated cylinder is calibrated in milimeters (mL).  Determine the volume of liquid in…

A:

Q: pH

A: