A chemist weighed out 7.9 g of gallium. Calculate the number of moles of gallium she weighed out. Round your answer to 2 significant digits.

Q: A penny has a mass of 2.50 g and the Moon has a mass of 7.35 × 10“ kg. Use this information to…

A: a) mass of 1 penny = 2.50 g   1 mole of pennies = 6.022x1023 penniesmass of 1 mole of pennies =…

Q: An oxygen atom has a mass of 2.66 × 10 - 23 g and a glass of water has a mass of 0.050 kg. Use this…

A: A question based on mole concept, which is to be accomplished.

Q: Calculate the number of hydrogen atoms in a 50.0 g sample of camphor (C10H160). Be sure your answer…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A chemist adds 210.0 mL of a 3.63 x 10 -5 mM mercury(II) iodide (Hgl,) solution to a reaction flask.…

A: Number of moles = Volume (L) x Molarity Mass = Number of moles x molar mass 1 g = 106 micro gram

Q: Calculate the number of hydrogen atoms in a 150.0 g sample of camphor (C10H160). Be sure your answer…

A:

Q: Calculate the number of oxygen atoms in a 150.0 g sample of dinitrogen tetroxide (N,0). Be sure your…

A: Given  Mass of N2O4   = 150 gram Number of Oxygen atom = ?

Q: A chemist determined by measurements that 0.0600 moles of gold participated in a chemical reaction.…

A: • The values provided in the question are:-      i) Number of moles of gold participated in a…

Q: Calculate the mass of tetraborane (B,H10) that contains a million (1.000 x 10°) hydrogen atoms. Be…

A:

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: Given: Density = 0.967 g/mL Volume = 499.8 mL The Mass of water =   Density of water x volume Mass…

Q: Calculate the number of hydrogen atoms in a 110.0 g sample of glucose (C,H1206). Be sure your answer…

A: Mass of glucose = 110.0 g Number of hydrogen in glucose = ?

Q: A chemist adds 230.0 mL of a 1.8 mol/L iron(II) bromide (FeBr,) solution to a reaction flask.…

A: Since moles of FeBr2 = concentration of FeBr2  X volume of FeBr2 solution in L Since concentration…

Q: Calculate the mass of diphosphorus pentoxide (P,0,) that contains a million (1.000 x 10°) phosphorus…

A: Given that, no. of P atoms= 1.000*106 atoms mass of P2O5=?  Molar mass of P2O5=283.889 g mol-1

Q: Ammonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,0).…

A: The chemical reaction is as follows:

Q: An oxygen atom has a mass of 2.66×10 -23 g and a glass of water has a mass of 0.050 kg. Use this…

A:

Q: Question is mentioned in the attached

A: The given questions have been solved using the mass of virus and that of the oil tanker.

Q: An aluminum atom has a mass of 4.48 x 10 - 23 g and a small airplane has a mass of 5000. kg. Use…

A: 1 mol of a substance contains Avogadro number of atoms.  Therefore 1 mol aluminum contains…

Q: A copper atom has a mass of 1.06 x 10 22 g and a penny has a mass of 2.5 g. Use this information to…

A: Given values: Mass of copper atom is 1.06×10-22 g

Q: A copper atom has a ass of 1.06 x 10 22 g and a penny has a mass of 2.5 g. Use this information to…

A: 1 mole = 6.022×1023 [ Avogadro's number ] One mole of copper will consists of 6.022×1023 Copper…

Q: Gaseous methane (CH) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,) and…

A: The balanced chemical reaction equation is as shown below. CH4(g)  +  2O2(g)  →  CO2(g)  +  2H2O(g)…

Q: Calculate the number of oxygen atoms in a 130.0 g sample of glucose (C,H120). Be sure your answer…

A:

Q: Calculate the mass of 65.0 cm3 of mercury.

A: Ans

Q: A chemist adds 250.0 mL of a 0.00378 mM calcium sulfate (Caso,) solution to a reaction flask.…

A: molarity = 0.00378 mM = 3.78×10-6 M volume = 250.0 ml moles = molarity x volume / 1000            =…

Q: A copper atom has a mass of 1.06 x 10 - 22 g and a penny has a mass of 2.5 g. Use this information…

A: Given,  Mass of 1 copper atom = 1.06 × 10-22 g Mass of a penny = 2.5 g Mass of 1 mole of copper…

Q: A chemist determined by measurements that 0.0250 moles of aluminum participated in a chemical…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: An aluminum atom has a mass of 4.48 x 10 g and a small airplane has a mass of 5000. kg. Use this…

A:

Q: A chemist adds 1.78 L of a 0.0117 g/L silver oxide (AgO) solution to a flask. Calculate the mass in…

A: Density of the substance is equal to the mass of the substance divided by its volume. Write the…

Q: Calculate the mass of camphor (C10 H16 0) that contains a million (1.0 × 106) carbon atoms. Be sure…

A: Mole: it is defined as the ratio of mass divided by the molar mass. mole=massmolar mass

Q: Calculate the number of hydrogen atoms in a 90.0 g sample of camphor (C10H160). Be sure your answer…

A: Given  Maas of camphor= 90.0 g We know that,  Number of moles = mass/ molar mass Number of moles of…

Q: 1) The number with the most significant zeros is A) 250000001 B) 0.00002510 C) 2.5100000 D)…

A:

Q: Calculate the number of oxygen atoms in a 150.0 g sample of scheelite (CaWO4). Be sure your answer…

A: Number of Oxygen atom in 150g CaWO4 can be calculated as follows

Q: Calculate the number of oxygen atoms in a 120.0 g sample of iron(III) oxide (Fe₂O3). Be sure your…

A: The chemical formula of iron(III) oxide is Fe2O3. Since the coefficient of O in Fe2O3 is 3, each…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A:

Q: A chemist determined by measurements that 0.045 moles of calcium participated in a chemical…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: A chemist weighed out 101. g of calcium. Calculate the number of moles of calcium she weighed out.…

A: As the question asks to find out the no of moles ,so let me first define mole :- It is equal to the…

Q: Calculate the number of gold atoms in a 150.0 g sample of gold(III) chloride (Au,Cl,). Be sure your…

A: Given-> Weight of Au2Cl6 = 150.0 gm

Q: The mass of an atom of silver is 1.79 × 10-22 g. How many atoms are in a  0.65  lb sample of silver?…

A: Mass of an Silver atom = 1.79 * 10-22 g/atom Total sample of silver = 0.65 lb

Q: An aluminum atom has a mass of 4.48 x10 -23 g and a small airplane has a mass of 5000. kg. Use this…

A:

Q: A penny has a mass of 2.50 g and the Moon has a mass of 7.35 x 10 kg. 22 Use this information to…

A:

Q: A chemist needs to know the mass of a sample of Na,SO̟ to 2 significant digits. She puts the sample…

A:

Q: An iron atom has a mass of 9.27 x 10 g and a cooking pot has a mass of 0.500 kg. Use this…

A: Mole is a measuring unit in chemistry. 1 mole has 6.023 x 1023 atoms. 6.023 x  1023 is the Avogadro…

Q: A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 102 g. Use this information to answer…

A:

Q: An oxygen atom has a mass of 2.66 × 10 – 23 g and a glass of water has a mass of 0.050 kg. Use this…

A:

Q: An aluminum atom has a mass of 4.48 x 10 -23 g and a small airplane has a mass of 5000. kg. Use this…

A: We have mass of 4.48*10-23 g , airplane have mass as 5000 kg .

Q: Calculate the mass of vanadium(V) oxide (V,05) that contains a million (1.0 x 10°) vanadium atoms.…

A: Given : Number of Vanadium atoms = 106 .

Q: Calculate the number of oxygen atoms in a 80.0 g sample of dinitrogen tetroxide (N,04). Be sure your…

A:

Q: Calculate the mass of camphor (C1,H1,0) that contains a billion (1.000 x 10°) carbon atoms. Be sure…

A: We have to calculate the mass of camphor (C10H16O) containing 109 carbon atoms.

Q: Calculate the mass of dinitrogen tetroxide (N,04) that contains a million (1.0 × 10°) nitrogen…

A: Here we are required to find the mass of dinitrogen tetraoxide which will contain 106 nitrogen atom

Q: Calculate the number of oxygen atoms in a 140.0 g sample of dinitrogen tetroxide (N,0). Be sure your…

A: First calculate the number of moles of N2O4, then from the formula as we see 1mol N2O4 = 4 mol…

Q: A chemist weighed out 3.51g of calcium. Calculate the number of moles of calcium she weighed out.…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: An iron atom has a mass of 9.27 × 10 -23 g and a cooking pot has a mass of 0.500 kg. Use this…

A: We are given mass of one atom, we have to find mass of 1 mole, and how many moles has mass same that…

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.