A plastic strip having a width of 0.2 m and a mass of (250+n) g passes between two layers A and B of paint. If force (P = 2+ m) N is applied to the strip, causing it to move at a constant speed of 8 mm/s, determine the viscosity of the paint. Neglect any friction at the top and bottom openings, and assume the velocity profile through each layer is linear. 8 mm 6 mm 0.30 m

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: C6H15N express your answer in atomic mass units to two decimal places

A: Atomic mass unit  mass equal to one twelfth of the mass of an atom of carbon-12.  Atomic mass unit…

Q: State the number of protons in Ni^2+ Express your answer as an integer.   State the number of…

A: Atomic number (Z) :-  The number of protons present inside the nucleus of an atom is called atomic…

Q: Electrons (me = 9.10938 × 10-28 g) moving at 1.80x107 m/s in an electron microscope: m

A:

Q: HNO3 NBS H,SO4 light AICI3 Fe HCI

A: Chemical reaction:

Q: here are only two naturally-occuring stable isotopes of carbon. The mass and natural abundance of…

A: Here we have to consider the atomic mass from ALEKS periodic table.

Q: 3(ii) A student performed an experiment to determine the density of a liquid, and recorded the…

A: Applying formula Density=mass/volume

Q: You have a sample of krypton (Kr) that contains 1 mole of atoms. If the diameter of a neon atom is…

A: Given diameter of Krypton(Kr) ( it should be Krypton not neon) = 202 pm  1 mol Krypton= 6.022 × 1023…

Q: Activity 1 1. A sample of compound A (a clear, colorless gas) is analyzed and found to contain 4.27…

A: Below attached file showing the details answer. All the best.

Q: An element has two isotopes. One isotope has a mass of 63.22 g. The other has a mass of 67.88 g. If…

A: An isotope of an element contains different number of neutrons in their nucleus. That is, isotopes…

Q: What is the volume and thickness of the aluminum foil given 0.405g (mass), 9.5 (length), 9.6…

A: Given:   The mass of aluminum foil is 0.405 g. The length of aluminum foil is 9.5 cm. The width of…

Q: Chemistry focuses on representing the submicroscopic world of atoms. A billion atoms of gold-197…

A: 1 Billion atoms of Gold weigh  = 3.3 × 10-¹³ g

Q: Magnesium, Mg Strontium, Sr Barium, Ba E Radium, Ra :::: :::

A: We know that on going left to right atomic radii decrease and on going from top to bottom atomic…

Q: An imaginary element (x) on Mars is composed of two isotopes, 54.93% of isotope x-34 with a mass of…

A:

Q: Neon exists in three isotopic forms: 20Ne, Ne and 22Ne. The atomic mass of Ne is 19.9924 amu and has…

A:

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: What element is “X" give the chemical symbol? а.) X 1s°2s°2p® b.) X²+ 1s°2s°2p°3s°3p®

A: We have to identify  the  element 'X' for the  given two electronic configurations.

Q: Five calcite, CaCO3 (MM 100.085 g/mol), samples of equal mass have a total mass of 12.4 ± 0.1 g.…

A:

Q: Which of the following could describe an element?   I II III All of them None of them

A: Matter: Matter can be defined as any component which occupies space and has mass.

Q: Please find as many elements from the periodic table on the word search. There is 100 of them

A: There are 118 elements in the modern periodic table.

Q: Density of an element is 3.95g/cm^3 Express it in lb / ft^ 3 1lb.=453g 1cm^3 = 1 ml 1 inch = 2.54cm…

A: Given data, Density of element = 3.95 g/cm3 1 inch = 2.54 cm Taking cube on both sides, we get (1…

Q: Q 15: Identify the Intermolecular forces (IMF) present in the following molecules: a. PH3 b.…

A: Given: PH3, CH3CH2OH, Fr2S, AsBr3 To find: the intermolecular forces in the given compounds.

Q: How many protons and electrons are there in a neutral atom of each of the following elements? Part C…

A: A neutral element with atomic number x has x number of protons and x number of electrons.  Here, the…

Q: What is the edge length of a cube whose mass for aluminum is 3.44g? Density is 2.70 g/cm3 and Volume…

A: In this question, we want to determine the value of edge length.  You can see details Solution how…

Q: Complete each row of the table below by filling in the missing prefix or missing exponent. 1 OL 10 1…

A:

Q: Copper has two naturally occurring isotopes, Cu (isotopic mass 62.9296 amu) and Cu (isotopic mass…

A: Isotopes are pairs of compounds that have same atomic number but different mass numbers.As the…

Q: The unit of energy in atomic units is given by

A: Energy in atomic units is also known as  Hartree energy having a symbol

Q: An electric current of 350.0 mA flows for 630. milliseconds. Calculate the amount of electric charge…

A: Given: The amount of current = 350.0 mA Time = 630 milliseconds We have to calculate the amount of…

Q: State the number of protons in Al^3+ Express your answer as an integer.   State the number of…

A: The element Al has atomic number = 13. Number of protons of an element is equal to atomic number of…

Q: After studylng the chemical reactions of many compounds made of carbon, August discovers a chemical…

A: According to the question, we need to determine the missing words in the following phase.

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.