2. A compound was analyzed and found to have the following percentage composition by mass: Cu: 49.73% P: 16.28% 0: 33.99% Determine the empirical formula of this compound.

Q: Do the following calculation of measured masses from an experiment: 73.4 g - 61.418 g Calculate…

A: Given  73.4 gram - 61.418 gram  Resultant value in correct significant figure = ?

Q: Part A 3.10 cm x 0.9 cm Express your answer to one significant figure and include the appropriate…

A: If you have any questions let me know in comment box thankyou for your question.

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: Perform the following calculation, reporting your answer to the correct number of significant…

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

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: 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: It seems that either your starting amount is incorrect or one of your conversion factors has an…

A: Volume: 22.3gallon1 gallon = 3.785LDensity= 0.8206g/ml

Q: Sodium metal is a soft silvery metal. Sodium metal reacts vigorously with water to produce sodium…

A: Given, Sodium metal is a soft silvery metal. Sodium metal reacts vigorously with water to produce…

Q: Ammonia (NH,) chemically reacts with oxygen gas (o,) to produce nitric oxide (NO) and water (H,0).…

A: Given data is as follows: The mass of ammonia given = 1.2 g The mass of oxygen gas consumed = ?

Q: 16 oz = 1lb 200lb=1T 1oz =28 g 1lb= 0.45 kg 1T=0.9t 71lb to g 71lb =___ g using the given,…

A:

Q: I have to have the correct number of significant figures

A:

Q: All nonzero digits are significant. State a rule that tells which zeros are significant.

A: Significant figures can be defined as the total number of digits that are present in a number…

Q: 2. Evaluate each of the following expressions. State the answer to the proper number of significant…

A: Rules for writing significant figures in addition subtraction multiplication and division; In case…

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: 2. A compound was analyzed and found to have the following percentage composition by mass: Cu:…

A: the empirical formula of a chemical compound is the simplest positive integer ratio of atoms present…

Q: combined mass of ten raindrops in grams?

A: Given : The mass of a raindrop = 8 milligrams or 8 mg

Q: If a stufent dropped their copper on the floor,they could carefully pick it up and place it on the…

A: While weighing compounds using balances, it is very important to take care that all sources of error…

Q: A solution is prepared by dissolving 3.57 grams of magnesium bromide, 8.1 grams of ammonium…

A: Total mass of solution is the addition of the masses of solute and solvent (in grams).…

Q: significant

A:

Q: A docs.google.com/document/d/1gMvnAL-0yUfszXerRVZWCNcjrbFwly5jSdGfXhHEmiU/edit# worksheet #2 ☆ D © A…

A: The formula of density is given by Density= mass/volume. The density of any substance can be…

Q: Complete the following equation and express your answer with the correct number of significant…

A: The rules for significant figures in addition and multiplication are as follows:  Addition and…

Q: what is the total mass of metal present in the container

A: For addition, calculate the significant figures of all the numbers. The sum, will have the least…

Q: 75 miles/hr converted to km/second. Also rounded to 2 significant figures.

A:

Q: Solve with correct significant figures and units

A: As there are only 2 significant figures in both the valve

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: perform the following calculation, reporting your answer to the correct number of significant…

A: Significant figures of a number are  necessary to indicate the quantity of something. It is also…

Q: (2×10^−5)(5.09×10^4) (7.70×10^−8)   Above is listed as a fraction   Express your answer using the…

A: In division , the result will contain the least no. of significant figure among the given numerator…

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: The density of a liquid is 2.30 g/cm³. What is its density in lb/ft³? 1 in = 2.54 cm; 1 lb = 454 g 1…

A: Given, Density of a liquid = 2.30 g/cm3 Density of the liquid = ? lb/ft3 1 in = 2.54 cm 1 lb = 454 g…

Q: When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8 g of carbon…

A: Balanced chemical equation for the reaction is given below.

Q: for this question, what would the correct number of significant figures be?

A: Concentration of KOH = 0.626 M The mas of MOBS=  5.00 g  pKa=7.48 and formula mass is 223.29 g/mol)…

Q: Horse height is measured in hands, one hand equaling exactly 4 inches. If a horse is 15.5 hands…

A: The unit conversion method can be used here.

Q: An engine has an internal combustion volume of 3.26 liters. What is that volume in cubic inches?…

A: Given  Volume =  3.26 Liter  Volume in the unit of  (Inch )3. = ?

Q: (3) Convert your result in question (2) into lb (pounds).

A: Grams(g) and pounds(lbs), both are the units of mass. And, 1g=0.002205lb

Q: 8 9 For the following questions, Perform the operation an express your answer in scientific notation…

A: 7)When multiplying and dividing, the answer should have the same number of significant figures as…

Q: I dont quite understand the significant figures. Need some examples

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

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: D Question 4 Consider an object that is in the shape of a cube with a mass of 45.8 grams. If the…

A: Answer:Density of an object is the ratio of its mass and volume as shown below:Here:

Q: A student determines the density of a liquid by determining the mass of an empty graduated cylinder,…

A: (a) Determine mass of the liquid:

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

A: The significant figure rule for the division and multiplication is that the final number should…

Q: When adding or subtracting measured quantities, what determines the number of significant figures in…

A: The result of an addition or subtraction should be reported to the same number of decimal places as…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.