• Part A - Determining the Number of Significant Figures in a Measurement An object is determined to have a mass of 0.01080 g. How many significant figures are there in this measurement? O 2 4. 6. O 5 O 3

Q: A 0.181 g piece of solid aluminum reacts with gaseous oxygen from the atmosphere to form solid…

A: The reaction of aluminum with gaseous oxygen can be expressed as,                        4 Al + 3 O2…

Q: The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure…

A: Density of an object is the amount of mass the object has in a given volume of that object. If the…

Q: Samples of hydrated manganese perchlorate are heated to determine the amount of crystal water:…

A: Given:Mass of hydrate before heating (Mn(ClO4)2.nH2O) = 2.126 gMass of hydrate after heating…

Q: 1. Water is added to the acid in the preparation of an acidic solution. 2. Calibration is the…

A: Actually, for the preparation of an acidic solution, acid should be added to the water slowly. Then…

Q: I. Determine the number of significa 1. 8.314 g 2. 5.008 x 10-2 mM 3. MMNACI = 58.44 g/mol %3D 4.…

A: According to guidelines, only 3 sub parts have to be answered.

Q: The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure…

A: According to the Archimedes principle, the volume of any solid submerged in water water is equal to…

Q: A chemist determines by measurements that 0.025 moles of nitrogen gas participate in a chemical…

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Q: Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by…

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Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NAOH) to produce aqueous…

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Q: 1. What is the sum of 89.332 g and 1.1 g? a. 90.4g b. 90.432g C. 90.0g d. 90.43g

A: The significant figures of a given number are those significant digits, which express the meaning…

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: HBr reacts with NaOH to produce salt NaBr and water. This is an acid base reaction or also called…

Q: Classify each property as physical or chemical. (a) the tendency of copper to turn green when…

A: Chemistry is the branch of science which deals chemicals, the chemical behavior of matter and the…

Q: A chemist determines by measurements that 0.095 moles of fluorine gas participate in a chemical…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: Distinguish the difference between a coefficient and a subscript?

A: 1.Subscripts are part of the chemical formulas of the reactants and products which indicates the…

Q: The diameter of a DNA alpha helix is about 8 ✕ 10−8 in. What is its diameter in centimeters?

A: Given: Diameter of DNA α helix= 8×10-8 inWe need to find diameter in cm

Q: Someone invents new units of measurement: grobs, hulks, and blubs. They define that 1 hulk is equal…

A: Given new units of measurement 1 hulk = 10-3 grob 7 bulbs = 377 hulks We can relate bulbs with grob…

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

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Q: cur. How many grams of H2 will be produced? (s) +2 HCI(s) → MnCl2(aq) + H2(g) ease type in your…

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Q: A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: A pycnometer is an apparatus that can be used to determine the density of an insoluble solid by…

Q: An antacid tablet weighing 0.938 g contained calcium carbonate as the active ingredient, in addition…

A: We know that, according to the law of conservation of mass in a chemical reaction, the mass of the…

Q: A student working on this lab found the mass of their sample after the first heating to be 30.6057…

A: Given information: Mass of sample at first heating = 30.6057 g Mass of sample after 5 minutes =…

Q: 4.44 x 1066/2.82 x 1023 = O 1.57 x 1043 O 1.57 x 1041 O 1.57 x 1044 O 1.57 x 1042

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Q: What is the mass in grams of 12 oz mass of salt

A: Given that, mass = 12 oz change into gram ?

Q: Why are intensive properties useful for identifying a substance? A:They describe the amount of…

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Q: A chemist adds 415.0 mL of a 9.84 × 10 "M magnesium fluoride (MgF2) solution to a reaction flask.…

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Q: What is 1.3 x 0.8

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Q: Two samples of potassium chloride are decomposed into their constituent elements. One sample…

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Q: Gold can be hammered into extremely thin sheets calledgold leaf. An architect wants to cover a 100…

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Q: Gaseous butane (CH,(CH,), CH) will react with gaseous oxygen (O,) to produce gaseous carbon dioxide…

A: Butane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: A chemist weighed out 5.3 g of iron. Calculate the number of moles of iron she weighed out. Be sure…

A: Given : weight of iron = 5.3 gram    Find : Calculated the number of moles of iron .   Formula :…

Q: Liquid octane  CH3CH26CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: Liquid octane (CH3(CH2)6CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide…

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Q: Gaseous ethane (CH CHwill react with gaseous oxygen (02) to produce gaseous carbon dioxide (CO, and…

A: The balanced chemical reaction is shown as,

Q: Use the algebraic equation to determine the mass if the volume was 622 mL.  mass (g) = (3.60…

A: Given, mass (g) = (3.60 g/mL)(volume (mL)) + 11.4 g y= mass (g) m = 3.60 g/mL x= 622 mL b = 11.4 g

Q: Gaseous methane (CH,) will react with gaseous oxygen (O,) to produce gaseous carbon dioxide (CO,)…

A: The reaction of Methane and oxygen is

Q: What is the mass in grams of 8.91x 1016 chromium atoms?

A: Given :-  number of Cr atoms = 8.91 × 1016 atoms  To be calculated :-  mass of Cr (in grams)

Q: A solution that is 20.0% ethanol by volume has a density of 0.977 g/mL. What is the mass percent of…

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Q: 8.930 12.2mL Metal C 3 sig fig 3. Calculate the mass in grams of a 525 cm³ block of lead. 1. 525…

A: Given, Volume of lead block = 525cm3. Density of lead = 11.342g/cm3.

Q: +- 0.1mg As a result of the uncertainty of your measurements above, the actual mass of your empty…

A: The uncertainty estimation for measurement should consider both the measurement's accuracy and…

Q: How do i fill in this table?

A: Density = mass (g)/volume (ml)density of water = 0.997770 g/mlHere, we have mass of material…

Q: Liquid octane (CH,(CH,) CH, will react with gaseous oxygen (0,) to produce gaseous carbon dioxide…

A: Given: Mass of octane = 2.28 g Mass of oxygen = 6.0 g Known: Molar mass of octane= 114.23 g/mol…

Q: Use the simulated data below to calculate the mass/mass percent of casein in your sample of milk.…

A: We need to determine the amount of milk and casein individually followed by their mass/mass percent.

Q: What is the mass (in g) of each of the following a sphere of zinc witha diameter of 1.26 cm. The…

A: Mass of a substance = Volume of the substance x Density of the substance.

Q: A piece of alminum foil contains 3.6 x 1021 aluminum atoms.  1) What is the mass of the aluminum…

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Q: 197.0 g 1 тol X 4 = 1 тol 6.022 х1023 10 10 3. (407.8 рт)3 х 1 рт

A: It is an example of simple unit conversion problems. We can calculate the value by cancelling the…

Q: Someone invents new units of measurement: grobs, hulks, and blubs. They define that 1 hulk is equal…

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Q: How many moles are there in 1.0 g of the element Al? Your answer must contain the correct number of…

A: Moles can be expressed as the ratio of mass of the solute to the molar/atomic mass of solute. i.e.…

Q: Percent by mass of hydrogen in ammonia, NH3, is 17.77 %.  Which of the following is the grams of…

A: Gram of hydrogen = percentage of hydrogen × mass of ammonia.

Q: A chemist determines by measurements that 0.095 moles of bromine liquid participate in a chemical…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".