A copper atom has a mass of 1.06 × 10^-22 g and a penny has a mass of 2.3 g. Use this information to answer the question below. Must have the correct number of significant digits. How many moles of copper atoms have a mass equal to the mass of a penny ?

Q: A sample of oxygen contains 7.1 x 1020 atoms. How many moles are in this sample? Your answer should…

A: One mole of a substance contains 6.022×1023 particles(atoms/ions/molecules).In this problem,we've to…

Q: A copper atom has a mass of  ×1.0610−22g  and a penny has a mass of  2.5g . Use this information…

A: Given data :· Mass of copper atom = 1.06×10-22 g· Mass of Penny = 2.5 gWe need to calculate :· The…

Q: When a 12.259-g sample of a compound containing only copper and oxygen was decomposed it produced…

A:

Q: A lead fishing weight contains 0.19 mol of lead atoms. What is its mass?

A:

Q: How many grams of gold (Au)are there in 88.93 moles of Au? Be sure your answer has the correct…

A: When the moles of the substance are given, it has to be calculated by knowing the molar mass of that…

Q: Matter consists of tiny particles that can combine in specific ratios to form substances with…

A: A theory gives us a well-structured explanation of an observed phenomenon that is confirmed through…

Q: A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 1o g. Use this information to answer…

A: Please find your solution below : The mole is a quantity that defines the amount of a substance and…

Q: A 36.41-g sample of calcium carbonate (CaCO3 ) contains 14.58 g of calcium and 4.36 g of carbon.…

A: Given data: Mass of CaCO3 sample = 36.41 g Mass of calcium = 14.58 g Mass of carbon = 4.36 Formula…

Q: Element X forms three different compounds with element Y. Information about these compounds is…

A:

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

A:

Q: A 81.15 g sample of a compound containing potassium, chromium and oxygen is analyzed as containing…

A:

Q: A sample of aspirin synthesized in the laboratory contains 26.0 g of carbon and 15.4 g of oxygen. A…

A: Given : 1st sample contains 26 g of carbon and 15.4 g of oxygen. 2nd sample contains 8.16 g of…

Q: = tr²l (l= length of wire) The density of copper at 20°C is 0.896 kg/dL at 20°C. A copper wire has a…

A: Given that,  The diameter of wire - 0.110 mm = 1.1 x 10-4 m; radius - 5.5 x 10-5 m.The atomic mass…

Q: The chemical formula for hydrogen fluoride is HF. A chemist determined by measurements that 0.0450…

A:

Q: Antimony, Sb has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a…

A: Given percentage abundance  Sb-121 = 57.25℅ Sb-123 = 41.75℅ Mass of Sb-123 = 122.9041 amu atomic…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3Si2O52OH2 An…

A: Given data: Number of moles of silicon = 13  Chemical formula of talc = Mg3(Si2O5)2(OH)2

Q: The amounts of gold (Au) in the three gold bullion coins are shown below. Indicate which of the…

A: 1 mol of Au contains Avogadro's number of atoms.

Q: 13. While cleaning your attic, you found your old rock collection. If 83.58% of the rocks have a…

A:

Q: if something only contains Hydrogen and Oxygen. Analysis of a 5.00 g sample of this sample of this…

A: Amount of any substance can be calculated in any compound by using amount of other substances…

Q: Question 7.KMT is based on the idea that particles of matter are in constant motion.  True  False

A: *According to kinetic molecular theory electron are small in size and undergo ramdom motion here and…

Q: Express the masses of proton and neutron using six significant figures. Express the mass of electron…

A:

Q: Hydrogen peroxide (H2O2) is a mild antiseptic used to prevent infection in minor cuts and scrapes.…

A:

Q: U-238 is naturally the most abundant form of uranium; however, only U-235 can be used as fuel in a…

A:

Q: Determine the number of atoms in 1.96 mL of mercury. The density of mercury is 13.5 g/mL

A: Given: Density of mercury = 13.5 g/mL Volume of mercury = 1.96 mL We know,…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.