Determine the number of atoms in a piece of silicon that has a mass of 15.0 grams. O 1.13 x 1024 atoms O 1.69 x 1025 atoms O 2.54 x 1020 atoms O 3.21 x 10-3 atoms O 9.03 x 1024 atoms

Q: Please answer the question in the picture that is attached.  thank you so much :)

A: As per the Hess’s law of Constant heat Summation, regardless of the number of steps or stages that…

Q: 1 2 3 LE 2+ Ca: F: Li L 4 5 7 6 [ANN] Ne 21

A: 1) Calcium (Ca): Its atomic number is 20 and nearest inert configuration number is 18. So, by losing…

Q: Ⓒ Macmillan Learning How many grams of O are in 805 g of N₂O? mass:

A:

Q: Shown below is a structure in which two amino acids are connected by a peptide bond. What are the…

A: We must examine the side chains connected to the alpha carbon in order to identify the names of the…

Q: Draw an abbreviated structure for the following polymers,with brackets around the repeat unit:

A:

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: We have to draw the curved arrow mechanism of the given reaction.

Q: 1) -CuLi

A: R2CuLi (Gilman reagent ) These are used for making ketones from acyl/acid chlorides.

Q: someone please help me answering questions #1, #3 and #5? Thank you

A: Since your question has multiple parts, we will answer the first question for you. If you want…

Q: STARTING AMOUNT How many moles of hydrogen are in 3.06 x 10 of glycine, CHNO,? ADFACTOR CJANO, 2…

A:

Q: 15.8) Explain the difference between catabolism and anabolism. YOUR ANSWER SHOULD BE SOMETHING LIKE…

A: To explain the difference between catabolism and anabolism.

Q: A man who had broken his right leg was taken to hospital a few weeks before Christmas. He was afraid…

A: Question = What hopes did the doctor give the patient Answer = Doctor told him that there is some…

Q: AICI3 a) d)

A: Carbocation always have tendency to rearrangement.

Q: acıdıc 2- 3+ + CO2 (5) 2- basic

A: The given redox reaction is:                 Cr2O72-aq + C2O42-aq → Cr3+aq + CO2g Oxidation state of…

Q: Part G Interactive 3D display mode H3C CH3 Br

A: IUPAC rules: 1-Selection of maximum number of primary carbon chain.(Priority order-funtional…

Q: 1) The following balanced chemical equations are for based on the combustions of various fuels.…

A: Heat of combustion(∆H): The change in enthalpy of a system when one mole of the substance is…

Q: Place the correct term in the blanks to properly complete the paragraph. allograft autograft…

A:

Q: How did you get 10306.22

A: The relationship between moles and mass is Mass = Mole ×Molar mass

Q: Activity 1: Polarity Experiment Materials: Water Vinegar • Oil • Alcohol •6 disposable glasses spoon…

A: Solubility rule-“Like dissolves like” Polar compound means has polar covalent bond and non polar…

Q: 210 200 270 260 250 What is the probability of finding this particular combination in the…

A: Identify the Alleles: We start with the alleles present at the two genetic loci, D5S818 and PentaD,…

Q: 7. Proteins and carbohydrates consist primarily of carbon, hydrogen, and oxygen; these two molecules…

A: 1) Each atom has a nucleus made up of protons and neutrons.       2) In atoms, the number of protons…

Q: МСРВА CH2N2, hv Br2, CC14

A: -> MCPBA (m-chloroperoxybenzoic acid) used for formation of epoxide when reacts with double…

Q: b)_________ H20(1) + CO2(g)+ LiNO3(aq)

A: Given iincomplete reaction : ______    + _______     ----------> H2O(l) + CO2(g)  + LiNO3(aq)We…

Q: PLEASE JUST DON'T EXPLAIN IT!! Please answer and solve this question!!

A: The problem involves calculating the fraction of diatomic molecules in a particular rotational level…

Q: Identify the selected functional groups. Type the name of the functional groups In the boxes

A:

Q: Just consider the half-reaction that involve the circled species.

A:

Q: 7. What do the study findings suggest to us about our overall question, "How should we search for…

A: For life on earth depends six elements : carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.…

Q: For the following molecules write the hybridization state of all the C, N and O atoms in each of the…

A:

Q: A 0.311 g of antacid was neutralized with 50.0 mL of 0.102 M HCI. Calculate the neutralizing…

A: Mass of antacid = 0.311 g  Volume of antacid= 50.0 mL Molarity of HCl = of 0.102 M. We have to…

Q: Pre market notification is required for cosmetics sold in Canada. Group of answer choices True False

A: Approach to solving the question: understand key concepts  Detailed explanation: Cosmetics - These…

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.