At 25 °C, K = 9.1 x 1080 for the reaction 2H2(g) + O2(g) * 2H20(g) What is the value of K. for the reaction: 1 H20(g) H2(g) + 02(g) (Express your answer in scientific notation.) 5.5e-82 Kc

Q: Which n 15. Carry out the following mathematical ope significant figures. a) 116.3 ст —0.33 ст…

A: 15. Given, a) 116.3 cm - 0.33 cm = b) 137.8 mL + 25 mL =  c) 21 mg + 13.8 mg + 130.36 mg =

Q: A chemist has a block of iron metal (density is 7.87 g/mL). The block weighs 2.10 g. What is the…

A:

Q: (3.20×10^2)(2.72×10^−3) (2.918×10^−3)(57.0)   Above is listed as a fraction   Express your answer…

A: Interpretation -  To express the answer in the correct number of significant figures in the given…

Q: A pizza has an area of 3.44 m2. Perform a conversion to each of the following units. a) in^2 b)…

A: A pizza of area 3.44 m2 Conversions 1. m2 into in2 We know that 1m = 39.37 in there fore 1m2 =…

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: Which of the following statements is true about the reaction described in the energy diagram below?…

A: GIVEN:-

Q: G L00 400 3000 1000 HaVENUER H L00 3000 2008 1000 HAVENUNEERI TERNSHITTANCEI

A: Spectroscopic analysis is very useful in structural elucidation of organic compounds. IR…

Q: how can you use the physical properties of melting solubility and conductivity to classify ionic and…

A: Ionic compounds have high melting point due to strong intermolecular force of attraction between the…

Q: Calculate the pH of each solution.

A: The dissociation reaction is  HClO4 ---> H+ + ClO4-  Hence from 1 mole of HClO4 we will get 1…

Q: how do i convert 5.7*104miles*lb/hr to cm*g/sec?

A: Given :- 5.7*104miles*lb/hr  To convert :- 5.7*104miles*lb/hr to cm*g/sec

Q: (e) (83.145 m - 83.142 m)/(4.52 sx 2.208 s) = i Units m/s^2 Hint Assis

A: Calculation can be done by use of addition/substraction,  multiplication or division to solve for…

Q: Solve the following problem and express the answer in scientific notation with the appropriate…

A: Multiplication of significant figures :-  The answer of multiplication must have the same number of…

Q: Solve the following problem: (8.250x10^-3)* (4.800x10^0) * (7.3x10^0) Your answer should be in…

A: The result of any calculation may be affected by the associated determinant and in determinant…

Q: (4.8 x 10-14 ) (2.0 x 109) in scientific notation

A: (4.8 x 10-14 ) (2.0 x 109) in scientific notation

Q: ᴀ ꜱᴛᴇᴇʟ ᴛʀᴀɪɴ ʀᴀɪʟ ɪꜱ 400 ᴍᴇᴛᴇʀꜱ ʟᴏɴɢ, ɪɴ ᴍᴀʀᴄʜ ɪᴛ ɪꜱ -30 ᴅᴇɢʀᴇᴇ ᴄ ᴀɴᴅ 40 ᴅᴇɢʀᴇᴇ ᴄ ɪɴ ᴊᴜʟʏ. ᴡʜᴀᴛ ɪꜱ…

A: Detailed solution is provided.

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: 38.The density of carbon dioxide is 1.8 kg/m^3. So, the volume occupied by 7.2 kg of carbon dioxide…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: 220 200 180 160 CNMR 11 10 9 140 7 120 6 100 80 Ppm Integral 2 5 ppm 4 60 3. 40 20 1 2 3 1 0

A: 13C NMR data: Carbon peaks are observed at, 10 ppm, 25 ppm, 70 ppm. 1H NMR data:  Proton peaks are…

Q: Chart 1 I 8 - 6 H 4 Axis Title G fx 1 O Chart Title 2 F O 0 80 70 60 50 40 30 20 10 0 Axis Title D 1…

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

Q: m= 15.5g, V = 6.01 cm3, what is the density?

A: Density (d) is the measure of mass per unit volume.                        d=mass(m)volume(v)

Q: 132. The following statements are all true. (a) Jessica's house is 5 km from the grocery store. (b)…

A: Given: (a) Jessica’s house is 5 km from the grocery store. (b)Jessica’s house is 4.73 km from the…

Q: Add 1.345 + 232.54 + 6.5487 and report your answer to the correct number of significant digits.

A: INTRODUCTION: Significant digits are the digits that tells about certain digits taht have…

Q: determine the precision of each measurement. 23.9m 14050ft 5.0 x 10^4s

A: The word Precision is defined by how closely a measurement matches the same measurement when…

Q: p. 654,321 - 564,321 p. (3.4617 x 107) / (5.61 x 104) q. [(9.714 x 105) (2.1482 x 10°)]/ [(4.1212)…

A: →O  654,321-564,321⇒ 90000

Q: FRider Beam 200 300 、 時30 10 20 40 50 60 70 80 90 100 6 7 10 3. 2.

A: Triple beam balance is an instrument used to measure mass. It uses mass riders for measurements.

Q: 3.52

A: Dear student I have given answer to your question in the image format.

Q: covert  1 x 10^3 to standard notation

A: A number expressed in the form  a × 10b is called scientific notation . To convert a number from…

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: .20849x=/(.001-x)(0.0004-x)

A:

Q: The single proton that forms the nucleus of the hydrogen atom has a radius of approximate 1.0x10-13.…

A: Volume of nucleus and Hydrogen atom is determined as given below,

Q: (1.678x10^3m^2)/(1.6267x10^2m) ...I just need help with the sig figs and units

A: (1.678 X 103 m2 ) / (1.6267 X 102 m)Calculate the above problem with correct significant and unit.

Q: Use the References to access important values if needed for A sample of volume 244 cm has a mass of…

A: Mass = 1.04 Kg = 1040 g Volume = 244 cm3 Density = ?

Q: • If a car travels a distance of 241 km, what is that distance in miles?

A: Given Distance = 241 km

Q: Graphite and diamond are both made of pure carbon. Graphite has a density of 2.266 g cm ^-3 and…

A: The density formula is as follows,

Q: Calculate the simple interest earned. Round to the nearest cent.   P = $4000, r = 9%, t = 1 year

A: Simple interest (SI) is evaluated as the percentage charged on the principal sum borrowed or…

Q: In the gas phase, methyl isocyanate (CH3NC) isomerizes to acetonitrile (CH3CN), H3C-N-C (g) H3C-C-N…

A: Temperature Dependence of the Equilibrium Constant:  For a gaseous reaction the relation between…

Q: Convert 2.0 decades to milliseconds. Use 1 year = 365.25 days. (2 sig fig applies)

A:

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: Why do the ability to separate and recover pure substances from mixtures is extremely important in…

A: Purity is a necessity of scientific research.

Q: 8.27x10^24 particles of hydrogen bromide weigh how much? round answer to 2 decimal places.

A: According to the question, The number of particles for the Bromide is given by  = 8.27×1024 particle…

Q: Is 74.5 x105 written using scientific notation

A: scientific notation is an expression where a number which is less than 10 is multiplied by power of…

Q: 4.47 in^2 to cm^2

A: A question based on dimensional analysis that is to be accomplished.

Q: I have a question about chemistry and it's A hectacre(1.0000 * 10 4square as in top of that 10 m2…

A: Given :— Area of farm =5.0 hectare To find :— Area of farm in square feet.

Q: 6.8 x 104  mg to 1kg

A: We know, 1 milligram (mg) = (1/1000000) Kilogram (Kg) Or, 1 milligram (mg) = 0.000001 Kilogram (Kg)

Q: Round 0.054321 to 4 significant figures

A: If the last digit in the given number is greater than 5 , then we have to add 1 to second last digit…

Q: Calculate the density Density C d= 5.40g 2.00cm² Since

A:

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.