Please make they are corect significant

Q: Hi I need help with this question please -Of the solids are not dry when added to the graduated…

A: Calculated density will be larger because solids are not dry then Mass of the solid increases and…

Q: Explain why measurements are never exact.

A: The act of the measuring the size of an object is known as measurement. It is numerical…

Q: 100 50 Time ---> (ɔ.) aimaiadwaj,

A: The occurrence of melting in the heat curve has to be given.

Q: Time, s [A ], M

A:

Q: tD Page view A Read aloud V Draw Highlight O Erase Certainty (marked on the ruler) and one uncertain…

A: for ruler 1 the uncertainty is 1 cm   for ruler 2 the uncertainty is 1/10 cm=0.1cm=1mm

Q: Round 329.2258 to 2 significant digits

A: Significant figures are meaningful digits which are known with certainty. There are certain rules…

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: 5. When do zeros count as significant digits, and when don’tthey count?

A: The significance of zeros in a mathematical value has to be given.

Q: Set up the problem below and calculate the number of days that are equivalent to exactly 48960…

A: Convert minute into days?

Q: Measurements have shown that the concentration of salt in seawater is 35.5 g·L 1 '. Calculate the…

A: Concentration is basically the availability of the solute per unit volume of solution. It is usually…

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 student measures the length of an object and obtains 3.65 cm. If the true value (as reported by…

A: Answer:- This question is answered by using the simple concept of calculation of percent error using…

Q: Evaluate: 27.30 g + 12.755 g + 0.055 g = Report answer to the correct number of decimal places and…

A: When addition operation is performed, the final answer have least number of digits after the decimal…

Q: Convert 5.8pounds to kilograms. Express you answer with proper significant figures. Answer:,

A:

Q: Express6.0 * 103 m using a prefix to replace the power of ten.

A: In powers of ten notation, large numbers are written using ten to a power, or exponent.

Q: The number 24.03687 rounded to significant figures is________

A: The number 24.03687 rounded to significant figures is?

Q: this is incorrect, I entered that number and it marked it as wrong

A:

Q: 8887 m Express your answer using three significant figures.

A: Given: Provided Value=8887 m  This value has to be rounded to 3 significant figures. At this moment…

Q: easured to be 4.93. Round your answer to 2 significant digits.

A: [H+] = 10^-pH  [H+] = 10^-4.93 [H+] = 0.0000117M

Q: Why are significant digits important when taking data in the laboratory?

A: Significant figures are used to express the degree of accuracy of an answer.

Q: Subtract the values of any two adjacent labeled marks and  divide by the number of spaces (10/10=1)…

A: scale increment

Q: Which digit is the estimated digit and what is the level of uncertainty for this number: 2467.00

A: Significant figures are used to express the degree of accuracy of an answer. The rules for…

Q: Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when…

A: Given     mass of object = 149.8 g  Volume of object = 12.1 mL   To find : density of an object

Q: Using the significant digits, what is the temperature change if the initial temperature is 13.6…

A:

Q: sp Round your answer to 2 significant digits. g x10

A: The question is based on the concept of solubility product Principle. it states that a weak…

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: When reading a graduated cylinder, or any analog measuring device, you should estimate the last…

A: There are total 10 divisions between reading 1 and 2 Or 2 and 3. Reading of each division = 2-1 mL10…

Q: 10) Solve each problem and report your answer to correct significant figure and units. Remember that…

A: 244.15 kg 18.36 ml 152.5 cm 0.4049 g/cm3 11.5 lb.ft/gal 3.488 × 106 mg/cm3 1.761 × 102 nm 1.987 ×…

Q: Round off 0.0003419 to three significant digit

A: Method for rounding off is given below: 1. Write the number in scientific notation.  2. All non-zero…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Since we know that 1 m = 100 cm  hence cubic the above values we get  (1 m)3 = (100 cm)3  => 1 m3…

Q: A person is 6 feet 9 inches tall; how many cm tall are they? 2.54 cm = 1 in. Report your answer with…

A: Given :  Height = 6 feet 9 inch  2.54 cm = 1 inch

Q: Find t. 5 m 4 m 10 m D Write your answer as a whole number or a decimal. Do not round. t = meters

A:

Q: 15. An object has a mass of exactly 5 g on an analytical balance that has an 'accuraey of 0.1 m many…

A: The degree of accuracy of the measurement can be calculated by using significant figures. In any…

Q: + e Mn2+ E = +0.32 - - 2e → V E = -0.49 answer should be entered with 3 DIGITS; do not enter units;…

A: In electrochemical cell,  Standard cell potential is given by E°cell = E°c - E°a = -0.49 -(0.32) =…

Q: When scientific measurements are made they are reported using: Select one: a. all certain digits…

A: Scientific measurements are done to get the accurate result . Hence when the report it , it is done…

Q: Place the following numbers in scientific notation, rounded to 3 significant digits.…

A: The way that is used to express very large numbers or small numbers into simplest form or can say…

Q: Record the measurement shown below to the proper place value. Do not include units in your answer.…

A: The 1 cm length is divided into 10 parts, hence the given instrument can measure the length with one…

Q: = new temperature c The correct number

A:

Q: 7.

A: As we can see that, it is a concave miniscus which means that molecules of the liquid are attracted…

Q: Round 426.1016 to four significant digits

A: Rules for rounding significant digits :- 1) If the rightmost digit to be removed is less than five ,…

Q: Use exponential notation to express the number 582,000,000 to: one significant figure two…

A:

Q: help use significant figures please

A: Given, the balanced Chemical equation is -  Ag2O(s) + 2 HNO3(l) ----> 2 AgNO3(s) + H2O(l)…

Q: Non-zero digits in a measurement are Always significant O Never significant O Significant only if…

A: Given statement is , Non zero digits in measurement are ....

Q: A student measures the length of an object and obtains 3.65 cm. If thr true value (as reported by…

A: Given, Measured value = 3.65 cm True value = 3.75 cm

Q: When 14.06 is divided by 89.9 , the answer should be reported to significant digit(s). The result of…

A: The question is based on the concept of significant figures. We have to correctly identify it and…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Given number : 73. V/m  V/m = volte per meter  0.01m = 1cm

Q: Write the number "fifty" in numerical form giving one significant digit

A: 50 we can write as in one significant figgure is  5 ×101 So 5 ×101 has one significant figur 5 The…

Q: 15 | he individual markings of a0-milliliter graduated cylinder are a of a apart. This allows one to…

A: A graduated cylinder is a standard instrument used to measure the volume of reagents in…

Q: Correct! Now, determine the uncertainty value for the measurement. 7.48 ± A mL 7 SUBMIT UNCERTAINTY…

A: Uncertainty is the half of the smallest possible measurment that can be made with that glassware.

Q: Please help use proper significant figure

A: Entropy of vaporization = 87.30 J/Kmole Enthalpy of vaporization = 33.30 KJ/mole

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.