Which common inexpensive metal was more valuable than gold in the nineteenth century?

Q: Q1. The colour of silver and gold nanoparticles changes according to the particle's ....... OK

A: The color changes depending on the size/shape of the gold nanoparticles.

Q: 1. Density of solids by volume displacement| Solid Copper Сopper Glass Iron Aluminum Form Wire…

A:

Q: Which substances conduct electricity?

A: The conductance of electricity in a substance is a measure of how easily the flow of electricity…

Q: Diamond is a strong and hard material that does not conduct electricity. Verify this statement.

A:

Q: Explain how a geologist might use the flame test to identify a cation from different mineral…

A: A question based on qualitative analysis, which is to be accomplished.

Q: A baby's spoon with a surface area of 6.25 cm² is plated with silver from AgNO3 using a current 2 A…

A: Given : Surface are of spoon = 6.25 cm2  Current = 2 A And time = 2 hr 25 min = 145 mins…

Q: What are the difference between the properties of Metal and the properties Ceramics materials? use…

A: Please find your solution below : Metals are the elements that are generally opaque, lustrous and…

Q: What are the difference between the properties of Metal and the properties Ceramics materials? use…

A: Metals are solid substances that are opaque in appearance and have a high electrical conductivity.…

Q: why electronic configuration of coinage metals is exceptional?

A: Silver, copper and gold are the coinage metals.

Q: b. silver nitrate and ammonium chromate c. copper(II) sulfate and calcium nitrate d. strontium…

A: First write down the reactants and products formed in this reaction along with their phases and then…

Q: Electroplating a metal is an example of physical change. Select one: O True O False

A: Electroplating of a metal : Electroplating refers to : electro + plating  It defines the process of…

Q: Which term listed is a property of a non-metal?  high density brittle shiny  conducts electricity

A:

Q: How much nickel is contained in a nickel coin that is 8.33% (by weight) of nickel? Recall that a…

A: Shape of coin is cylindrical. Density of a substance is defined as the mass of substance per unit…

Q: All of the following are characteristics of metals except.

A: Malleable means they are hammered into thin sheets. Ductility means they can be drawn into thin…

Q: Which of the following is a solid metal under normal conditions: calcium, phosphorus, mercury, or…

A:

Q: List the Metals on the Nanoscale?

A: The list Metals on the Nanoscale has to be given,

Q: What branch of chemistry would study the amount of mercury present in a soil sample? Explain.

A: Mercury  is  an  element  present  in periodic table.It has  atomic  number  of 80  and has…

Q: When we say that lead is a denser metal than aluminum, are we talking about anextensive or intensive…

A: Intensive Property • does not depend on the amount of the substance. • even if you change the amount…

Q: use the web to determine the amount of aluminum used in the united state in a single year. What is…

A: A question based on use of Al, which is to be accomplished.

Q: What is an element? A. Oxygen and nitrogen joined together. B. A piece of pure nickel C. A water…

A: The question is based on the concepts of general chemistry. it talks about elements which is purest…

Q: what is the total mass of metal present in the container

A: For addition, calculate the significant figures of all the numbers. The sum, will have the least…

Q: The relative error calculated for the analysis of Zn alloy was -4.1%. Assuming that the sample is…

A: The relative error is the ratio of absolute error to the measurement being taken multiplied by 100.…

Q: Based on the evidence, what metal are pennies mostly made of, and what metal are dimes mostly made…

A:

Q: a In which block of the Periodic Table would you find nickel and copper?

A: Atomic number of Nickel = 28 Electronic configuration of Nickel = [Ar] 3d8 4s2 Period Number of…

Q: Is pure 24-carat gold a substance, element, and/or compound? Explain.

A: 24-carat gold an element. It can be also reffered to as pure substance. It contains only the gold…

Q: heterogeneous

A: A homogeneous mixture is a solid, liquid or gaseous mixture which has the same proportions of its…

Q: Liquid silver's chemical name is: a. Ag(only) b. Si(liquid) c. Ag (liquid) d. Hg(liquid)

A: Silver is a chemical component with the symbol Ag (f and nuclear number 47.

Q: If limestone is interacted with an acid, it liberates a gas made from: a. water vapor b. methane…

A: Limestone is the common name of the salt CaCO3. It reacts with acid to form corresponding salt along…

Q: Describe the processing of titanium dioxide nanoparticles include reference

A: Answer - Titanium dioxide nanoparticles, also called ultrafine titanium dioxide or nanocrystalline…

Q: What is the name for a representation of the physical world? A. Alloy B. Compound C. Atom D. Model

A: By definition of alloys, compounds, atom and models of compounds.

Q: B) What do you know about the chemistry of polymers.

A: Introduction :  The term polymer can be defined as the very large molecules having high molecular…

Q: Which of the following substances can be separated into simpler substances only by chemical means?…

A: Given options out of  which can be separated into simpler substances are   a. gold b. water c.…

Q: Water is classified as a(n) a. atom. b. element. c. mineral. d. compound.

A: Is water is atom, element, mineral or compound has to be given.

Q: Out of zinc and tin whose coating is better to protect iron objects?

A: Given,  Out of zinc and tin whose coating is better to protect iron objects.

Q: Cú Li CI

A:

Q: make

A: Given statement is true.

Q: Which of the following is correct? Gold nanoparticles are non-metals Gold nanoparticles are metals…

A: To find: The correct statement

Q: How can a blacksmith help teach metals and non metals

A: A blacksmith is a metalsmith who creates objects from wrought iron or steel by forging the metal . A…

Q: Is helium metal nonmetal or metal loud

A: Helium is non - metal

Q: Metal copper and magnesium metal colors after being heated?

A: When copper metal is heated in the air, it reacts with the oxygen of air and forms copper oxide that…

Q: Mntt + Fe ot+HeO +2 Mn04 + Fe

A:

Q: A) gas B) solid C) liquid D) salts E) ice

A:

Q: If a pure material decomposes when heated into simpler substances, this proves that the material was…

A:

Q: does personal care use nanotechnology?

A: NANOTECHNOLOGY -   As we know that , Nanotechnology , it is defined as  the science of converting…

Q: , which among GaAs, LiBr, C, and Li will be the greatest conductor

A: Substance which has more number of ions have more electrical conductivity.  So, strong electrolytes…

Q: 1. EtLi 2. aq H*

A: The product of the given reaction is

Q: Which of the following used to be more precious than gold or silver, due to difficulties in refining…

A: The metal more precious than gold or silver, due to difficulties in refining is given below.