the coins have a mass of 2500 g and a volume of 221.4 ml  are the coins gold  Please explain check your results refect significant figure rule

Q: How many microliters are there in 2.89x10^3 ng  of CH3OH(density = 0.791 g/mL)? Answer in scientific…

A: Density of a substance is given by the expression:

Q: What is the mass of a metal sample with a volume of 8.9 mL and a density of 5.2 g/mL?  Do not…

A: Given values, Volume= 8.9 mL  Density= 5.2 g/mL Mass= ? So, we have formula, Density = mass/ volume…

Q: What volume (in mL) would an object have if the object has a mass of 7.291 g and a density of 11.5…

A: Given  Mass of object = 7.291 gram  Density = 11.5 gram/mL  Volume = ?

Q: What volume (in mL) would an object have if the object has a mass of 17.949 g and a density of 10.0…

A:

Q: Determine the volume of 5.00 g of water (d = 1.00g/mL) and the volume of 5.00 g of chloroform (d =…

A: Every chemical compound has a different mass, volume. They are related by density.

Q: Josephine obtains an unknown irregular silvery metallic solid. She masses the metal and finds that…

A: When a mass is dipped in water, the displaced water is the volume of the mass. So first calculate…

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

A: in a numerical value, the number of meaningful digits are known as significant figures.

Q: If the density of gold = 19.3g/mL, what is the mass (in grams) of 125 mLof gold?

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Q: The nutrition label on a bottle of cola reports that a 8.0 fl oz serving contains 24 g of sugar. How…

A:

Q: Provide the answers with proper number of significant figures in the following operations. pls…

A: We know the default base of logarithm is 10.  To find the antilog we need to divide the given number…

Q: Round off or add zeros to the following calculated answers to give a final answer with three…

A: Given calculated answer,        125444 m

Q: (1 Use the References to access How many meters are there in one kilometer? Enter your answer in…

A: The metric system is a system of measurement that uses the metre, litre, and grams as the base units…

Q: A 20.20 gram irregular piece of metal is placed in a graduated cylinder containing 20.20 ml of…

A: Density - It is a measure of mass of a substance per unit volume . Density = massvolume

Q: mm 63 mm 1x10-3 Part A Suppose that you measure a pen to be 11.3 cm long. Convert this to meters.…

A: Conversion of units : this can be done by a method called unit factor method by a method called unit…

Q: A substance is in the form of a 4.5 cm long cylinder with a diameter of 2.1 cm and a mass of 3.7 g.…

A: The term density can be defined as the measurement which can be used to compare the amount of the…

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: The density of ethanol is 0.789 g/mL. If you need 408.0 g of ethanol for an experiment, how many…

A: Given  Density = 0.789 g/ml Mass = 408 g

Q: aver Volume of Objects Object Volume (mL) Water Volume Water Volume With Object Without Object (ml.)…

A: Ans) Water volume with Object = 23 mL Then the volume of Object = Water volume with Object - Water…

Q: This was sent back.  It is a chemistry sig problem in freshman chemistry   Why is 1376 - (2.4x102)=…

A: No, there is no need to look at the last sig fig while adding or subtracting. There are certain…

Q: Graph the data in Table 2.7, with the volume on the x-axis and the mass on the y-axis. Then…

A: Slope of the graph is given by the expression, Slope=y2-y1x2-x1

Q: What is the % mass of iron in iron (II) oxide?  Report your to answer to 2 decimal places

A: persentage iron =( atomic mass of Iron/ molar mass of FeO) * 100

Q: The water level of a graduated cylinder is initially at 13.06mL. After placing a metallic necklace…

A: Density of a substance is given by the ratio of mass of the substance to its volume. Density = mass…

Q: Give the correct significant figure answer for the density of a substance that weighs 3.765 g and…

A: Given, mass of substance = 3.765 g Volume of substance = 4.00 mL

Q: Use your calculated density of your unknown metal sphere to determine the mass of an object made…

A: from above information we know that the dendity  of the unknown sphere is is equal to the density of…

Q: 1. A 100 mL beaker was weighed on a centigram balance. Looking at the photo to the right, record its…

A:

Q: What would the mass of a metal sample have if the sample had a volume of 41.2 mL and the metal had a…

A:

Q: solve question 2) The most inaccurate glassware for measuring volume iz   a) Beaker   b)…

A: The most inaccurate glassware for measuring volume is:

Q: I Review | Constants | Periodic Table A 40-lb container of peat moss measures 14x 20x 30 in A 40-lb…

A: Given that : Dimensions of 40-lb container of peat moss =  14 in x 20 in x 30 in. Area to be covered…

Q: A penny is found to have a mass of 2.70 grams. Using unit analysis, show what the mass of this penny…

A:

Q: Show all pertinent calculations. Express final answer up to 4 decimal places I. STANDARDIZE THE…

A: Given: weight of KIO3 = 0.5325 g Volume of KIO3 =250 mL To complete the following table: Standardize…

Q: I Review I Constants I Periodic Table A hybrid electric vehicle has an EPA gas mileage rating of 49…

A: EPA mileage of the car is 49mi/gal 1mile=1.60934km 1gal=3785.411ml

Q: Use calculator to solve the problems. Write your answer in scientific notation with correct number…

A:

Q: If you have 200.0 mL of Calcium, determine what the mass would be using the density provided.…

A:

Q: If there are 2.205 pounds in one kilogram and 28.35 grams in one ounce, how many ounces are in 1.3…

A: 1kilogram  = 1000 gram  Now given,            In 1kilogram, there are 2.205 pounds Or,    In 1000…

Q: Two students measured the density of water three times each. Their results are shown below. Trial…

A:

Q: QUESTION 10 How many digits should be recorded when taking mass measurements with a digital balance?…

A: The digital balance measures the mass of a substance. The number of digits shown in the digital…

Q: Suppose that you measure a pen to be 10.5 cm long. Convert this to meters. Express your answer in…

A: We know that, 1 meter = 100 centimetres Or  ,    1 m = 100 cm…

Q: A substance has a density of 0.469 g/mL. What volume in mL does a 133 g sample contain? answer to 3…

A: Density (d) :-  The ratio of mass of a substance to its volume is called density  Density =…

Q: A patient takes a 1000 mg calcium carbonate tablet twice a day. Unfortunately, calcium carbonate is…

A:

Q: Please input the result for each of the following calculations with the correct number of sig fig,…

A: In Addition and Subtraction, Round the answer to the LEAST number of places in the decimal portion…

Q: Chemistry 310 Lab 3 – Measurements Name Report Sheet Part 1: Obtain mass of a liquid in a beaker…

A: Mass of water is equal to the difference in the mass of beaker filled with water and mass of empty…

Q: In the PHET simulation window you should see the Custom radio button selected in the Blocks menu on…

A: As we know that density is the ratio of Mass with respect to volume, and changing these factors…

Q: An irregularly-shaped, compact solid weighs 15.0 grams. By water displacement method using a…

A: Given :  Mass of solid = 15.0 g Initial volume reading of graduated cylinder (without solid)=25.0 mL…

Q: A piece of plastic tubing measures 120 mm. What is the length of the tubing in inches?

A: For this we have to know that .,  1 mm = 0.0394 inch

Q: For which object does the method of volume by displacement give an inaccurate result? Why? A4.…

A: The method of measurement of volume of the metals by displacement method gives inaccurate result for…

Q: Find number of significant figures 0.00047 g 100.01 ml 1000.0 m 0.2500 km

A: Find the number of significant figure of the following?

Q: Use calculator to solve the problems. Write your answer in the correct scientific notation with the…

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

Q: units and correct sig figs in box provided – use scientific notation if convenient. 18-karat gold…

A: Answers: Given 18 Kart gold jewelry contains 75% gold by mass A) If total mass of 18 Karat gold…

Q: Calculate the density of a metal sample with a mass of 10.6 g and a volume of 11.4 mL. Do not…

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.