1 sig fig 2 sig figs 3 sig figs 4 sig figs 5 sig figs Answer Bank 0.006 0.030 890020 140 4.050 11020 200

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

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Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: Please answer this question as fast as you can please and tahnk you. I will afterwards write an…

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

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Q: 20 Express the answer to this multi-step calcu- lation using the appropriate number of sig- nificant…

A: The answer should have the same number of decimal places as the limiting term when adding or…

Q: Evaluate the expression and report the answer to the proper number of significant figures. log (9.9…

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Q: cubic angstroms (1 angstrom = 10−¹⁰) Express your answer in cubic angstroms to two significant…

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Q: hemist must dilute 95.2 mL of 1.14 mM aqueous magnesium fluoride (MgF₂) solution until the…

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Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: Calculate the number of hydrogen atoms in a 70.0 g sample of ammonia (NH3). Be sure your answer has…

A: Given: Mass of NH3 is 70.0 g Molar mass of NH3  is 17 g/mol Atoms in 1 mole is 6.022×1023  To find:…

Q: What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm ^3?

A: Step : 1             What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm 3?

Q: The average adult heart pumps about 84. mL/s of blood at 72 beats per minute. Suppose you need to…

A: According to given data heart pumps  blood at the rate of 84ml/s at 72 beats per minute.

Q: Carry out the following calculations, making sure that your answer has the correct number of…

A: Given that, 8.69 mL ÷ (15.3 mL - 8.94 mL) We have to calculate and result should have correct…

Q: A piece of cardboard is 12.0 cm long and 6.3 cm wide. What is the area of this piece of cardboard in…

A: Given,A piece of cardboard is 12.0 cm long and 6.3 cm wide.

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Density is calculated by using the formula : Density = Mass/Volume

Q: the density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm^3.…

A: The density of mercury is given as 13.6 g/cm3 and it is required to convert this in pounds per cubic…

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: N204 (9) + 4 H2 (g) → N2 (g) + 4 H20 (9) Express your answer using one decimal place.

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Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

Q: Mass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In…

A: Volume can be calculated using the following equation.

Q: Chemistry

A: According to significant figure rule the number have least significant digit known as limiting term.…

Q: Use your calculator to determine the answer to the following calculation: 1.0×10–15 4.2×10-7 Express…

A: The calculation is given below:

Q: Calculate the mass of ammonia (NH,) that contains a trillion (1.00 × 10“) hydrogen atoms. Be sure…

A: 1 mole of any substance contains 6.022 x 1023 atoms or molecules or particles. Here 6.022 x 1023 is…

Q: What is the area in cm² of a sheet of paper that is 8.50 in x 11.0 in?

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Q: Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only 44.5 g/km, Suppose a…

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Q: You weigh a crucible empty to be 44.181 g. You add Mg and weigh the crucible and Mg together to be…

A: Given : Mass of crucible = 44.181 g And mass of crucible with Mg = 44.421 g

Q: Iron has a density of 7.86 g/cm° (1 cm' = 1 mL). Calculate the volume (in dL) of a piece of iron…

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Q: A student measures a block to weigh 127.95 grams what would this mass be in milograms with the…

A: Given – Mass of block = 127.95 g   To find - convert g to mg

Q: Suppose that, from measurements in a microscope, you determine that a certain layer of graphene…

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: 11.004g + 3.08g x 112.96g= I don't understand how to start this problem when there is not…

A: The dimensional analysis does not allow physical quantities with different units to be added or…

Q: There are exactly 60 seconds in a minute, exactly 60 minutes in an hour, exactly 24 hours in a mean…

A: 60 smin ×60 min1 hour ×24 hour1 day ×365,24,daysolar year  =31556736 s/solar year

Q: Do the following calculation and express the answer using the correct number of significant figures.…

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Q: 1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask…

A: Given ,Volume of falsk = 25 mLTotal volume it can hold = 27.64 mLMass of flask = 45.897 gMass of…

Q: An object is moving at a velocity of 11 km/s. Calculate the distance in miles traveled by the object…

A: We have to predict the distance in miles.

Q: A major component of gasoline is octane and water (H₂O). (C8H18). When octane is burned in air, it…

A: To Determine the mass of oxygen consumed when 8.24g of octane undergoes combustion

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.