Enter the answer as the element symbol. (a) 16p 2c 8c 6c 16n 28p 32n (b) 2c 8c 16c 2c

Q: Should the elemental symbol for lead be written as Pb or PB? What confusion could arise if the wrong…

A: Elemental symbol for lead is Pb and it should be Pb .

Q: Is phosphorus a metal? O Yes O No

A: Given that, Is phosphorus a metal?

Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

A:

Q: K: Mn: Ge: Kr:

A:

Q: A fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

A:

Q: Complete the sentences by crossing out the words that are wrong. The first one has been done for…

A:

Q: What are the chemical symbols for antimony, arsenic, aluminum, boron, gallium, germanium, indium,…

A:

Q: Name each of the following elements : As, I, Xe, He, C, Si

A: Name of the given element- As = Arsenic I= Iodine Xe= Xenon

Q: Write the following from largest to smallest size. C (a) Ca, Mg2+, Ca2+

A: (a) Comparing the size of a cation and neutral atom, cation will have smaller size.   Therefore, the…

Q: Classify each of the following as a compound, a homogeneous mixture, or a heterogeneous mixture: (a)…

A: (a) distilled water: Compound. Distilled water is a pure substance ( compound) made up of hydrogen…

Q: Should the elemental symbol for lead be written as Pb or PB? What confusion could arise if the wrong…

A: Atom is made up of nucleus (proton and neutrons) and electrons are revolving around it.

Q: Complete and balance the following equations. Click in the answer box to open the symbol palette. 1…

A:

Q: Why was it necessary for separation techniques and methodsof chemical analysis to be developed…

A: Law of definite composition states that the composition of a particular compound is the same no…

Q: Should the elemental symbol for lead be written as Pb or PB? What confusion could arise if the wrong…

A: We know that, Lead is an element with the  atomic number 82 and its symbol is Pb . It is a metal and…

Q: Use the periodic table to give the name and symbol for each of the following elements: (a) the…

A: In a period the electrons are filled in the same shell and in a group, the electrons are filled in…

Q: Write the symbol for each of the following ions. (Enter your answer in the form  A X q± Z .) (a) the…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Write the following from largest to smallest size. (Use the appropriate <, =, or > symbol to…

A: Comparing the size of a cation and neutral atom, cation will have smaller size. Since Mg is below Be…

Q: The radius (r) of a silver atom is 160 picometers (1 pm = 1 × 10–12 m). Estimate the thickness of…

A: First convert the unit of radius from picometers to centimeters; 1 pm=10-10cm160 pm=160×10-10cm

Q: Draw the condensed structural formulas of stearic acid and oleic acid.

A:

Q: Complete and balance the following equations. Click in the answer box to open the symbol palette. 1…

A: Since,  We know that,  Balanced equation means number of proton and mass number in reactant side is…

Q: Identify each of the following elements as a metal, nonmetal,or metalloid: (a) gallium, (b)…

A: Metals are those elements which show metallic properties like shiny appearance, ductile and…

Q: What is the symbol for the element that is in group VIIA(17) and period 3?   What is the symbol…

A:

Q: The radius of a uranium atom is 149 pm. How many uranium atoms would have to be laid side by side to…

A:

Q: Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the…

A: Radioactivity is a process by which unstable atomic nuclei lose energy by emitting radiation. This…

Q: Which of the following elements is not a representative element? O Nickel Cadmium Silicon O Barium

A: I A, IIA, IIIA, IV A, VA, VI A, VII A, VIII A elements are called representative elements. Between…

Q: what is the unit, including its prefix, for 10^-6 of the derived unit for energy?

A: The ability to do work is called energy.

Q: Which total mass is the largest?

A: Mass of an electron is 0.000549 amu. Mass of a proton is 1.00728 amu. Mass of a neutron is 1.00867…

Q: Write the symbol for each of the following particles. (a) an atom with 13 protons and 13…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the…

A: Radioactivity is the process during which an emission of radiation is observed from an unstable…

Q: Express your answer as a chemical symbol or an ion.

A: Atoms consists of subatomic particles i.e. protons, electrons and neutrons

Q: atoms of gold (Au) In a 3.7-gram sample, there are (A) 1.1 x 1022 atoms of gold (B) 3.2 x 1025 atoms…

A: Given, mass of Au = 3.7 g Molar mass of Au = 196.97 g/mol

Q: Which of the following is a chemical property? O Changing shape O Melting point O Oxidizing O…

A: A multiple choice question about chemical property.

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.