1.Density of lead is 11.3 g/mL. How many mL do 29.1 g of lead occupy?

Q: of 10 A student is measuring the mass of a solid sample using an electronic balance that measures to…

A: The given electronic balance measures to the thousandth of a gram that is 1/1000 g (=0.001g). The…

Q: Lithium is the least dense metal known  (   density = 0.534 g/cm3 ) .   What is the volume occupied…

A: Given: Mass of Lithium = 1.10 ×103 g Density of Lithium = 0.534 g/cm³

Q: How many significant digits are these in the following numbers? 25.25 _________ 200.5 _________…

A: Significant figures rules are: (1) All non-zero digits are significant digits. (2) Zeroes between…

Q: A cubit is a measurement of distance from the ancient near east which is equivalent to about 1.5…

A: 1 cubit = 1.5 feet and  1 meter = 3.28 feet Calculations are done in the following step.

Q: Which of the following numbers has the greatest number of significant figures? 103.07, 124.5,…

A:

Q: Write the numbers in scientific notation. 10991099 1099=1099=       ×10?×10a ?=       0.000950.00095…

A:

Q: What is the mass of  1.42x10^24 atoms of oxygen?  grams What is the mass of 5.01x10^23 molecules…

A: In the question, following information given - Atoms of oxygen (O) = 1.42×1024 Molecules of oxygen…

Q: 1. When expressed as 7.5x10^4, only the significant figures of are to.be considered. (1 point) O 7.5…

A: The notation of digits written in a format is called significant number.Typically after decimal four…

Q: 1. (a) How many kilometers/min does a car go if it goes 52 miles/hour?     (b) What number of…

A:

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: What is 841,000 W when written in scientific notation? Pay attention to significant figures. O…

A: The number 841,000 has 3 significant figures. So, the scientific notation must also have 3…

Q: Type of food: Apple Mass of empty watch glass: 28.6 g Mass of watch glass and undried food: 65.6 g…

A: Given: Mass of empty watch glass 28.6 g Mass of watch glass + Mass of undried food=65.6 g Mass of…

Q: The density of liquid bromine is 3.12 g/mL. What is the mass in g of 0.250 L of bromine

A: Density = mass/volume  Mass = density × volume

Q: Which has the fewest Significant figures? 1- 0.200 2- 7.760 3- 2.00 4- 300 5- 11.0 6- 200

A: Given numbers: 0.200 7.760 2.00 300 11.0 200 We have to find which one of them has the fewest…

Q: Write the numbers in scientific notation. 291.7=291.7=   ×10?×10x where ?=x=     0.0960=0.0960=…

A: The numbers given are 291.7 and 0.0960.

Q: Write the numbers in scientific notation.   673.5 673.5= 6.735×102     ×10? ?= 6.735     0.034…

A: Introduction :  We have to write the numbers in scientific notation .

Q: A sample of sand is found to have a mass of 12.0 g and to have a volume of 2.69 cm3. What is its…

A: NoTE- As per our company guideline we can answer only 3 sub parts. Kindly repost the question…

Q: To how many significant figures should each answer be rounded? (6.626x 10-34 J . s) (2.9979x 10%…

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Q: 5. Which prefix stands for a greater value? a) deca- or kilo-? d) hecto- or kilo-? b) kilo- or…

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Q: How many significant figures does 40100 mi has? How many significiant figures does 11 degrees…

A: Calculate number of significant digit in the given data---

Q: Part A: For calculations involving gaseous systems, it is important to use the kelvin temperature…

A: Part A: Thermometer reading = 221 °C Part B:  Temperature of the gas = 286 K

Q: When you see this number: 0.00000123, how do we mathematically and scientifically see this:  a. it…

A: When the numbers given are too small or large then the number is written in form of decimal and the…

Q: How many mL are in 3.0 tsp? 1tsp=4.93mL. Answer with the appropriate number of significant figures.

A: The volume of 3.0 tsp is calculated as shown below. The volume of 3.0 tsp is 14.79 mL.

Q: 4. Show the answers with appropriate number of significant figures. 39.9 а. 6.022 x1023 b. 0.0021 g…

A: In case of multiplication or division, the least number of significant figures in any number…

Q: in the US system, 1 lb is equal to 16oz. is this a measured or exact statement

A: To convert on unit into other we know we have two ways to represent them ; 1)  Exact number :-…

Q: Part A Total U.S. farmland occupies 954 million acres. How many square miles is this? (Note that 1…

A: There are different type of unit we use for the measurement of area.  For measuring the land area,…

Q: ꜱᴜᴘᴘᴏꜱᴇ ᴛʜᴀᴛ ᴛʜᴇʀᴇ ᴀʀᴇ ꜰᴏᴜʀ ᴄᴏʟᴏʀᴇᴅ ᴄᴀɴᴅɪᴇꜱ ɪɴ ᴀ ʙᴏx, ᴛᴡᴏ ʀᴇᴅ ᴀɴᴅ ᴛᴡᴏ ʙʟᴜᴇ, ᴡʜᴀᴛ ɪꜱ ᴛʜᴇ ᴘʀᴏʙᴀʙɪʟɪᴛʏ…

A: Answer 4 :-  Total number of Candies in the box = 4 Total number of red candies in the box = 2 Total…

Q: how many significant figures does 40.005 760  have

A: The question is based on concept of significant figures. we have to identify number of significant…

Q: Which number does NOT have three significant figures? 0.012 O 37.0 3.70 x 105 0.0307 O 0.0370

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

Q: To how many significant figures should each answer be rounded? (6.626x 10-34 J. s) (2.9979x 10% m/s)…

A:

Q: If your car gets 45.7 mi/gal, how many gallons of gasoline would you use if you drove 538.6 miles?

A: the car drove 45.7-mile per gallons of gasoline  thus to drive 538.6 miles, gasoline required =…

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: The lowest temperature recorded in a particular city during the past year was -16.22 C. What was the…

A: Interpretation -  The lowest temperature in the particular city during the past years was -16.22oC…

Q: How many significant figures does 3.005 have?

A: Digits which are responsible for contributing the degree of accuracy of a value are called…

Q: 14) Oxygen (02) is classified as what type of matter? A) element B) homogeneous mixture C) compound…

A: Thankyou for submitting an excellent question. Since you have asked multiple question, we will solve…

Q: How many significant figures in each number? ~3.14159 ~0.0202 ~320.0 ~3.0x10^-3 ~500

A: 1) The non-zero number is always a significant number . 2) The zero in between two non-zero number…

Q: Make the given temperature conversions. If the temperature outside is 101.0 °F, what is the…

A: From the formula--&gt;  °F=(°C*9/5)+32   (101°F − 32) × 5/9 = 38.333°C

Q: The Gateway Arch in St. Louis, MO is approximately 630 ft tall. How many U.S. half dollars would be…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: What is 242 lb converted to milligrams? What is 68.3 cm^3 converted to cubic meters? What is…

A: 1 lb = 453592 milligrams.  1 cubic cm = 1×10-6 cubic meters. 1 cubic meter = 1000 litres. 1 mg =…

Q: The number 1960900, when rounded off to 4 significant figures, would appear as _______   a. 1.961…

A: Scientific notation: Scientific notation is a way of expressing numbers to be conveniently written…

Q: The lowest temperature recorded in a particular city during the past year was -12.04° C. What was…

A:

Q: In SI units, land area is measured in hectares (1ha =1hm2) The commonly used unit for land area in…

A: The conversion factor for ha and cm units is,1 ha = 1 hm21 hm = 10000 cmHence, the conversion of ha…

Q: The first pic are my results the 2nd one is the question

A: a. The mass of 25ml olive oil is calculated as, b. The volume of 25g of a liquid is calculated as,

Q: If your car gets 35 mi/gal, how many gallons of gasoline would you use if you drove 570.3 miles?

A: Answer: In the given problem statement mileage of the car and distance travelled is mentioned and we…

Q: density of object?

A: Density of object = mass of object/volume of object  If mass in gram and volume in mL then ,  Unit…

Q: 15) How many significant figures are in 4.010000kg? A) 7 B) 3 C) 5 16) What is the answer for the…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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.