(4.123 × 0.12) + 24.2 why is the answer 25 and not 24.7? The last rule to be used is the addition, which meant I would round to 1 decimal place in this case.  Yet the final answer is rounded to two significant figures (multiplication rule), why is this?

Q: How do I find the scientific notation of 82,000,000 s if the number of signtificant figures is 4?

A: The number given is 82,000,000 s And number of significant figures required in final answer is 4.

Q: Calculate the following and express your answer in standard notation with the correct units and…

A: Significant figures and notations.

Q: Perform each of the following operations, using your calculator where possible:(a) Write the number…

A: Since we answer only upto 3 sub-parts, we will answer first three. Please resubmit the question by…

Q: m Calculate the kinetic energy of a 34. g bullet moving at a speed of 458. Round your answer to 2…

A: Given, mass of a bullet = 34. g = 0.034 kg Speed, v = 458. m.s-1

Q: When rounding the number 2.348615 to 4 significant figures, what is the correct value?

A:

Q: What is the value of the exponent in the answer? (104) (10 2)

A: Exponent is a mathematical term that is then used in carrying out the calculations in chemistry. It…

Q: Complete the table below relating the values. Each value is =0, >0, or <0

A: We have knowledge about two equations: One is Nernst Equation according to this, Second is…

Q: When 87.7 is added to 73.841, the result should be reported with significant figures. And when 87.7…

A: 87.7+ 73.841= 161.5 87.7÷73.841 = 1.19

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: a sample of sodium carbonate Na2CO3 is being dried. after 1 hour of drying the mass of the sample…

A: Weight of sample before drying =0.337 g Weight of sample after drying = 0.333 g Change in mass =…

Q: is it possible for the calculated answer from a mulitplication or divison problem to contain more…

A: The significant number of answer in multiplication and division is determined by the number having…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: We need to calculate %C by mass for n=12 in the formula CnH2n+1COOH  Atomic weights C = 12.01 g H =…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…

A: Intensive properties — Those properties of substance which doesn't depend on mass and volume of…

Q: During extreme hypothermia, a boy’s temperature droppedto 20.6 °C. What was his temperature in…

A: Solution- Given data- temperature dropped = 20.6 °C.

Q: Perform the following set of operations and choose the alternative that expresses the result to the…

A: • The given expression is,        (1.5 × 10-4 * 61.3 ) + 2.01     • We need to write the result of…

Q: 4 NO2 (g) + 2 H2O (1) + O2(g) → 4 HNO3 (aq) Express your answer using one decimal place.

A:

Q: Complete each row of the table below by filling in the missing prefix or missing exponent. J 1 n J…

A:

Q: The fuel consumption of a car is 1.8 gallons per 100 mile. Ifthe cost of fuel per liter is $16.7,…

A: Given data and conversions, 1.8 gallons = 6.813 Liters So, 1 Liter fuel is = $16.7 6.813 Liters *…

Q: If 20.0 Cal make an ounce, how many ounces of formula should a baby drink per day if the energy need…

A: 1 ounce = 20.0 cal Since per day a baby drink 1.50 ×103 cal No of ounces = 1.50 ×103/20 = 75

Q: What is the answer to this math problem? All the numbers used are measured numbers. 202.98 /…

A:

Q: ow many significant figures are there in the number 0.032020?   Group of answer choices a) 4 b) 6…

A: The significant figures can be defined as the digits in the given number that carry some meaning and…

Q: What is the result of the following calculation to the correctnumber of significant figures?(6.266 −…

A: (6.266 − 6.261) ÷ 522.0 = ( 0.005) ÷ 522.0 = 9.579 x 10-6  Number of significant figures are 4.

Q: Use the information from the table provided (IMAGE ATTACHED) to answer Question 1 (Part 1 AND 2).…

A: The attached image indicates how the potassium permanganate diffuses with time when the…

Q: The numerical value for (5.6 x 104) ÷ (7.89 x 102) is equal to, with the proper number of…

A:

Q: What is the proper scientific notation of the value 0.003280?    Group of answer choices 3.28 x 10-3…

A: What is the proper scientific notation of the value 0.003280?

Q: Which mix of units would fit best for measuring the speed of a very fast object? Group of answer…

A: Introduction :  Speed can be defined as the distance covered by an object per unit time.It is a…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: There are 12 eggs in a dozen. If a farmer's chickens produce an average of 464 dozen eggs in a…

A: Significant figure rules : five important significant figure rules are Non-zero digits are…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, have the general formula…

A: We have to calculate the % by mass of C .

Q: the seperation of carbon atoms is diamond is 0.154 n, what is their seperation in meters

A: The separation of carbon atoms in diamond is 0.154 nm.

Q: Carry out the following calculation and select the answer with the correct number of significant…

A: The solution is as follows :

Q: Which of the following has the same number of significant figures as the number 1.00310? Group of…

A:

Q: Normal body temperature has been commonly accepted as 37.0 °C (although it varies depending on time…

A: Firstly, the Kelvin temperature was calculated. It is calculated by adding the given temperature…

Q: How many digits after the decimal point should be reported when the calculation (10.434 – 9.3344) is…

A: Introduction: For addition and subtraction, the product should have a similar number of decimal…

Q: Conversion Factors in Calculations Report Sheet - Lab 2 B. Significant Figures in Calculations B.1…

A: Significant figures can be defined as  the number of digits in a value that tell us about the…

Q: A sailor on a trans-Pacific solo voyage notices one day that if he puts 385.mL of fresh water into a…

A: According to Archimedes principle, the mass of displaced water while floating is equal to the mass…

Q: Do the following multiplication and division calculations. Give a final answer with the correct…

A: final answer with the correct number of significant figures and the correct units. Units can cancel…

Q: Suppose that a new temperature scale has been devised on which the melting point of ethanol…

A: Step 1To derive a relative equation ⇒Absolute zero on new temperatureis = -1173.°c ( Melting point…

Q: How many significant figures should be retainedin the result of the following calculation? 12.00000…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Express 96.342 m using 2 significant figures   The answer is ……………………………….

A: Given data is 96.342 m  All digits of this number are non-zero Number of non-zero digits in this…

Q: Carry out the following operations and express the answers with the appropriate numbe significant…

A:

Q: The nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to…

A: According to the question, 1 Calorie = 1 kcal and 1 lb = 4.1×103 Calorie and also 1 kcal = 4.184 kJ.…

Q: It takes 10.5 s for a sprinter to run 100.00 m. Calculate her averagespeed in meters per second and…

A: The distance travelled by any object per unit time is termed as the speed of the object. Given:…

Q: what is the sum of the measured values 539, 35.4, 0.90, and 9.0 ?

A: For the addition of the number first we have to count the significant figures in the in the decimal…

Q: km Calculate the kinetic energy of a 3.1 x 10" kg airplane moving at a speed of 0.28 Round your…

A:

Q: Use the References to access important values if needed for this question. Complete the following…

A: Some important properties  :  1ax = a-x  ax . ay =ax+y    ( ax)y = ax.y axay = ax-y

Q: What is the number of significant figures does the sum of the following contain   + 5.652 , the…

A: The operations given are, 1) 1 + 5.652  2) 0.3 + 5.652

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: From calculation, we get the answer is 40%

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.