Round your answers to 6 decimal places.

Q: The metal osmium becomes superconducting at temperatures below 655.mK Calculate the temperature at…

A:

Q: Convert the following to ordinary decimal numbers 4.995*10^0 8.712*10^1

A: The transformation of scientific notation into corresponding decimal numbers can be done using…

Q: A Solid has the volume  of 22.6 cm3 and density of 8.75 g/ cm3   Calculate the mass in mg A.) 1.98…

A: The relation between Mass and Density and Volume of an Object is : Density (d) =  Mass (m) / Volume…

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: A sample of Cl2 gas has a volume of 13L, how much does it weigh?  Round to 2 decimal points

A:

Q: Complete the following table. Round each of your answers to 3 significant digits. a corn muffin food…

A: Conversion formulae are:  1 Kcal = 103 cal  1 cal = 4.184 J  1 KJ = 103 J

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: Round 19047 x 10^-2 to 3 significant figures and put in scientific notation.

A: All zeros between non-zeros are significant. 10 raise to powers are non significant. Zeros after…

Q: A physical chemist measures the temperature T inside a vacuum chamber. Here is the result. T=-42.6…

A: T(K) = 230.4 K

Q: The sum of 91.20 and 92.973 should be reported with—- digit(s) after the decimal point.

A: The numbers given are 91.20 and 92.973.

Q: A Moving to another question will save this response. Question 21 Make the following calculation and…

A:

Q: convert the following 1. 550 nm =                        km 2. 6328 Å =                         nm…

A: Convert the given measurement----

Q: A chemist must dilute 92.1 mL of 1.46 M aqueous nickel(II) chloride (NiC1₂) solution until the…

A: This is a dilution problem. Here we can use the formula  C1×V1 = C2 × V2 Where C1=Concentration of…

Q: A student measured the length and mass measurements of a cube using the same equipment as in the…

A: Density=MassVolume

Q: (0.0045×19000.0)+(2818×11) Express your answer to the appropriate number of significant digits.

A:

Q: 836.2 MHz (common frequency used for cell phone communication) Express your answer in joules using…

A:

Q: How many pounds of nickel are in 1.2 × 10° of the $1 coins? Give your final answer in the space…

A: we know that in US  1 dollar = 20 nickles

Q: Which of the following will have 1 decimal place in the correct answer? O 145 cm + 76.9 cm O 1.23 cm…

A: Answer: In addition and subtraction operations, number of significant figures to the right of the…

Q: Perform the following calculation. Round your answer according to the correct number of significant…

A: For multiplication and division the number of significant figure of result will be same as the least…

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: [(284.1 x 105) - (1.300 × 10³)] × 2.8988 Express your answer to the appropriate number of…

A: The equation given is, => [(284.1 X 105 ) - (1.300 X 103)] X 2.8988

Q: An electric current transports 10.0 C of charge in 248. milliseconds. Calculate the size of the…

A:

Q: Width 3.56 cm Length 5.425 cm

A: Area of a rectangle with length (a) and width (b) =ab The least number of significant figures in any…

Q: A chemist makes 500. mL of copper(II) sulfate (CuSO4) working solution by adding distilled water to…

A: Answer:During the dilution of a solution water is gradually added to the pre-measured quantity of…

Q: 3. Use the pictures below to read the volumes of water using different glasswa sure to record the…

A: Given are three different glasswares.To find the volume indicated.

Q: X (1)→X (g) AH = 42.8 kJ/mol and AS° = 110.9 J/mol K Calculate the boiling point temperature of X in…

A: Given reaction: X(l) → X(g) So, liquid X is converted to gaseous X. Hence, this process is called…

Q: 14.3577+2.59 Express your answer in appropriate significant figures

A: Given :-  14.3577+2.59  To solve :-  Given addition problem with appropriate significant figures

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: CEN OH CEN -OH HO LOH `NH2 HO,

A: Introduction: Infrared spectroscopy is used to detect the functional group in a molecule and nuclear…

Q: Compute 3.5 x 4.48697. Round the answer appropriately. Express your answer numerically using the…

A: Compute 3.5 x 4.48697The number of the significant figures in such mathematical treatment are…

Q: 2) Calculate the areas of the rectangle and circle in cm2. Report the answers to the correct number…

A: Given : length = 9.90 cm              Width = 3.30 cm              Diameter = 7.50 cm And area of…

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: What a balloon filled with air has a volume of 22.22 Liters at 34 Celsius. What was the balloon's…

A:

Q: How many seconds are there in 3.7 years? (Use 365 days/year) (You do not need to put in your units &…

A: The given time in the year is = 3.7 years The time in second is =?

Q: A brick of a certain metal has area on top of 2.15 cm x 5.24 cm. It has mass 1,036 g. How high is…

A: Given: Length of brick = 2.15 cm Width of brick = 5.24 cm Mass of metal = 1036 g Density of metal =…

Q: Round 0.03259651 to four significant figures

A: Rounding off a number means neglecting some digit which will not change the value of the number…

Q: . A box is 252.50 cm wide, 18.25 cm tall and 6.50 cm deep. Calculate the volume of the box in…

A: Given=> A box having:-       Length (L) or tall=>18.25 cm         Width (W)=>252.50 cm…

Q: 1. Perform the following calculations and give the answer rounded to the correct number of…

A:

Q: Round 0.00971659 to three significant figures.

A:

Q: 100.1 MHzMHz (typical frequency for FM radio broadcasting) Express your answer in joules using four…

A: To calculate the energy associated with a particular frequency is calculated using the following…

Q: Round to 3 significant figures 0.0014851

A: Significant figures refer to the number of digits that has contribution to the value or measurement.…

Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: The ratio of mass of the substance to the number of moles of the substances is known as molar mass.…

Q: The correct value according to Ruler A is 2.2 cm, whereas the correct value according to Ruler B is…

A:

Q: A chemist adds 800.0 mL of a 50.0 g/dL calcium bromide (CaBr,) solution to a flask. Calculate the…

A: Given, volume of solution added = 800.0 mL       and, concentration of calcium bromide solution =…

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.